- Arch-security - lists.archlinux.org

[ASA-202011-13] wireshark-cli: denial of service
by Morten Linderud 26 Nov '20

26 Nov '20

Arch Linux Security Advisory ASA-202011-13 ========================================== Severity: Low Date : 2020-11-17 CVE-ID : CVE-2020-28030 Package : wireshark-cli Type : denial of service Remote : Yes Link : https://security.archlinux.org/AVG-1258 Summary ======= The package wireshark-cli before version 3.4.0-1 is vulnerable to denial of service. Resolution ========== Upgrade to 3.4.0-1. # pacman -Syu "wireshark-cli>=3.4.0-1" The problem has been fixed upstream in version 3.4.0. Workaround ========== None. Description =========== A resource exhaustion issue has been found in the GQUIC decoder of Wireshark before 3.2.8. Impact ====== A remote attacker might be able to crash Wireshark via a crafted network capture file or packet. References ========== https://www.wireshark.org/security/wnpa-sec-2020-15.html https://gitlab.com/wireshark/wireshark/-/issues/16887 https://gitlab.com/wireshark/wireshark/-/commit/b287e7165e8aa89cde6ae37e7c2… https://security.archlinux.org/CVE-2020-28030

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[ASA-202011-12] firefox: multiple issues
by Remi Gacogne 18 Nov '20

18 Nov '20

Arch Linux Security Advisory ASA-202011-12 ========================================== Severity: Critical Date : 2020-11-17 CVE-ID : CVE-2020-15999 CVE-2020-16012 CVE-2020-26951 CVE-2020-26952 CVE-2020-26953 CVE-2020-26956 CVE-2020-26958 CVE-2020-26959 CVE-2020-26960 CVE-2020-26961 CVE-2020-26962 CVE-2020-26963 CVE-2020-26965 CVE-2020-26967 CVE-2020-26968 CVE-2020-26969 Package : firefox Type : multiple issues Remote : Yes Link : https://security.archlinux.org/AVG-1279 Summary ======= The package firefox before version 83.0-1 is vulnerable to multiple issues including arbitrary code execution, access restriction bypass, content spoofing, cross-site scripting, information disclosure, insufficient validation, denial of service and incorrect calculation. Resolution ========== Upgrade to 83.0-1. # pacman -Syu "firefox>=83.0-1" The problems have been fixed upstream in version 83.0. Workaround ========== None. Description =========== - CVE-2020-15999 (arbitrary code execution) A heap buffer overflow has been found in freetype2 before 2.10.4. Malformed TTF files with PNG sbit glyphs can cause a heap buffer overflow in Load_SBit_Png as libpng uses the original 32-bit values, which are saved in png_struct. If the original width and/or height are greater than 65535, the allocated buffer won't be able to fit the bitmap. - CVE-2020-16012 (information disclosure) An information disclosure issue has been found in Firefox before 83.0 and chromium before 87.0.4280.66. When drawing a transparent image on top of an unknown cross-origin image, the Skia library drawImage function took a variable amount of time depending on the content of the underlying image. This resulted in potential cross-origin information exposure of image content through timing side-channel attacks. - CVE-2020-26951 (access restriction bypass) A parsing and event loading mismatch has been found in Firefox's SVG code before 83.0 and could have allowed load events to fire, even after sanitization. An attacker already capable of exploiting an XSS vulnerability in privileged internal pages could have used this attack to bypass the built-in sanitizer. - CVE-2020-26952 (arbitrary code execution) A security issue has been found in Firefox before 83.0 where incorrect bookkeeping of functions inlined during JIT compilation could have led to memory corruption and a potentially exploitable crash when handling out-of-memory errors. - CVE-2020-26953 (content spoofing) A security issue has been found in Firefox before 83.0 where it was possible to cause the browser to enter fullscreen mode without displaying the security UI; thus making it possible to attempt a phishing attack or otherwise confuse the user. - CVE-2020-26956 (cross-site scripting) A security issue has been found in Firefox before 83.0 where, in some cases, removing HTML elements during sanitization would keep existing SVG event handlers and therefore lead to XSS. - CVE-2020-26958 (access restriction bypass) Firefox before 83.0 did not block execution of scripts with incorrect MIME types when the response was intercepted and cached through a ServiceWorker. This could lead to a cross-site script inclusion vulnerability, or a Content Security Policy bypass. - CVE-2020-26959 (arbitrary code execution) A security issue has been found in Firefox before 83.0 where, during browser shutdown, reference decrementing could have occurred on a previously freed object, resulting in a use-after-free, memory corruption, and a potentially exploitable crash. - CVE-2020-26960 (arbitrary code execution) A security issue has been found in Firefox before 83.0 where, if the Compact() method was called on an nsTArray, the array could have been reallocated without updating other pointers, leading to a potential use-after-free and exploitable crash. - CVE-2020-26961 (insufficient validation) A security issue has been found in Firefox before 83.0 where, when DNS over HTTPS is in use, it intentionally filters RFC1918 and related IP ranges from the responses as these do not make sense coming from a DoH resolver. However when an IPv4 address was mapped through IPv6, these addresses were erroneously let through, leading to a potential DNS Rebinding attack. - CVE-2020-26962 (access restriction bypass) A security issue has been found in Firefox before 83.0, where cross- origin iframes that contained a login form could have been recognized by the login autofill service, and populated. This could have been used in clickjacking attacks, as well as be read across partitions in dynamic first party isolation. - CVE-2020-26963 (denial of service) A denial of service issue has been found in Firefox before 83.0, where repeated calls to the history and location interfaces could have been used to hang the browser. This was addressed by introducing rate- limiting to these API calls. - CVE-2020-26965 (information disclosure) An information disclosure issue has been found in Firefox before 83.0. Some websites have a feature "Show Password" where clicking a button will change a password field into a textbox field, revealing the typed password. If, when using a software keyboard that remembers user input, a user typed their password and used that feature, the type of the password field was changed, resulting in a keyboard layout change and the possibility for the software keyboard to remember the typed password. - CVE-2020-26967 (incorrect calculation) A security issue has been found in Firefox before 83.0 where, when listening for page changes with a Mutation Observer, a malicious web page could confuse Firefox Screenshots into interacting with elements other than those that it injected into the page. This would lead to internal errors and unexpected behavior in the Screenshots code. - CVE-2020-26968 (arbitrary code execution) Several memory safety issues have been found in Firefox before 83.0 and Firefox ESR before 78.4. Some of these bugs showed evidence of memory corruption and Mozilla presumes that with enough effort some of these could have been exploited to run arbitrary code. - CVE-2020-26969 (arbitrary code execution) Several memory safety issues have been found in Firefox before 83.0. Some of these bugs showed evidence of memory corruption and Mozilla presumes that with enough effort some of these could have been exploited to run arbitrary code. Impact ====== A remote attacker might be able to access sensitive information, bypass security measures, trick a user into performing unwanted actions, crash the browser or execute arbitrary code. References ========== https://www.mozilla.org/en-US/security/advisories/mfsa2020-50/ http://git.savannah.nongnu.org/cgit/freetype/freetype2.git/commit/?id=a3bab… https://savannah.nongnu.org/bugs/?59308 https://www.mozilla.org/en-US/security/advisories/mfsa2020-50/#CVE-2020-160… https://bugzilla.mozilla.org/show_bug.cgi?id=1642028 https://www.mozilla.org/en-US/security/advisories/mfsa2020-50/#CVE-2020-269… https://bugzilla.mozilla.org/show_bug.cgi?id=1667113 https://www.mozilla.org/en-US/security/advisories/mfsa2020-50/#CVE-2020-269… https://bugzilla.mozilla.org/show_bug.cgi?id=1667685 https://www.mozilla.org/en-US/security/advisories/mfsa2020-50/#CVE-2020-269… https://bugzilla.mozilla.org/show_bug.cgi?id=1656741 https://www.mozilla.org/en-US/security/advisories/mfsa2020-50/#CVE-2020-269… https://www.mozilla.org/en-US/security/advisories/mfsa2020-50/#CVE-2020-269… https://bugzilla.mozilla.org/show_bug.cgi?id=1669355 https://www.mozilla.org/en-US/security/advisories/mfsa2020-50/#CVE-2020-269… https://bugzilla.mozilla.org/show_bug.cgi?id=1669466 https://www.mozilla.org/en-US/security/advisories/mfsa2020-50/#CVE-2020-269… https://bugzilla.mozilla.org/show_bug.cgi?id=1670358 https://www.mozilla.org/en-US/security/advisories/mfsa2020-50/#CVE-2020-269… https://bugzilla.mozilla.org/show_bug.cgi?id=1672528 https://www.mozilla.org/en-US/security/advisories/mfsa2020-50/#CVE-2020-269… https://bugzilla.mozilla.org/show_bug.cgi?id=610997 https://www.mozilla.org/en-US/security/advisories/mfsa2020-50/#CVE-2020-269… https://bugzilla.mozilla.org/show_bug.cgi?id=1314912 https://www.mozilla.org/en-US/security/advisories/mfsa2020-50/#CVE-2020-269… https://bugzilla.mozilla.org/show_bug.cgi?id=1661617 https://www.mozilla.org/en-US/security/advisories/mfsa2020-50/#CVE-2020-269… https://bugzilla.mozilla.org/show_bug.cgi?id=1665820 https://www.mozilla.org/en-US/security/advisories/mfsa2020-50/#CVE-2020-269… https://bugzilla.mozilla.org/buglist.cgi?bug_id=1551615%2C1607762%2C1656697… https://www.mozilla.org/en-US/security/advisories/mfsa2020-50/#CVE-2020-269… https://bugzilla.mozilla.org/buglist.cgi?bug_id=1623920%2C1651705%2C1667872… https://security.archlinux.org/CVE-2020-15999 https://security.archlinux.org/CVE-2020-16012 https://security.archlinux.org/CVE-2020-26951 https://security.archlinux.org/CVE-2020-26952 https://security.archlinux.org/CVE-2020-26953 https://security.archlinux.org/CVE-2020-26956 https://security.archlinux.org/CVE-2020-26958 https://security.archlinux.org/CVE-2020-26959 https://security.archlinux.org/CVE-2020-26960 https://security.archlinux.org/CVE-2020-26961 https://security.archlinux.org/CVE-2020-26962 https://security.archlinux.org/CVE-2020-26963 https://security.archlinux.org/CVE-2020-26965 https://security.archlinux.org/CVE-2020-26967 https://security.archlinux.org/CVE-2020-26968 https://security.archlinux.org/CVE-2020-26969

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[ASA-202011-11] chromium: multiple issues
by Remi Gacogne 18 Nov '20

18 Nov '20

Arch Linux Security Advisory ASA-202011-11 ========================================== Severity: High Date : 2020-11-17 CVE-ID : CVE-2020-16012 CVE-2020-16014 CVE-2020-16015 CVE-2020-16018 CVE-2020-16019 CVE-2020-16020 CVE-2020-16021 CVE-2020-16022 CVE-2020-16023 CVE-2020-16024 CVE-2020-16025 CVE-2020-16026 CVE-2020-16027 CVE-2020-16028 CVE-2020-16029 CVE-2020-16030 CVE-2020-16031 CVE-2020-16032 CVE-2020-16033 CVE-2020-16034 CVE-2020-16035 CVE-2020-16036 Package : chromium Type : multiple issues Remote : Yes Link : https://security.archlinux.org/AVG-1277 Summary ======= The package chromium before version 87.0.4280.66-1 is vulnerable to multiple issues including access restriction bypass, arbitrary code execution, insufficient validation, content spoofing and information disclosure. Resolution ========== Upgrade to 87.0.4280.66-1. # pacman -Syu "chromium>=87.0.4280.66-1" The problems have been fixed upstream in version 87.0.4280.66. Workaround ========== None. Description =========== - CVE-2020-16012 (information disclosure) An information disclosure issue has been found in Firefox before 83.0 and chromium before 87.0.4280.66. When drawing a transparent image on top of an unknown cross-origin image, the Skia library drawImage function took a variable amount of time depending on the content of the underlying image. This resulted in potential cross-origin information exposure of image content through timing side-channel attacks. - CVE-2020-16014 (arbitrary code execution) A use after free security issue has been found in the PPAPI component of the chromium browser before 87.0.4280.66. - CVE-2020-16015 (insufficient validation) An insufficient data validation security issue has been found in the WASM component of the chromium browser before 87.0.4280.66. - CVE-2020-16018 (arbitrary code execution) A use after free security issue has been found in the payments component of the chromium browser before 87.0.4280.66. - CVE-2020-16019 (access restriction bypass) An inappropriate implementation security issue has been found in the filesystem component of the chromium browser before 87.0.4280.66. - CVE-2020-16020 (access restriction bypass) An inappropriate implementation security issue has been found in the cryptohome component of the chromium browser before 87.0.4280.66. - CVE-2020-16021 (arbitrary code execution) A race condition has been found in the ImageBurner component of the chromium browser before 87.0.4280.66, leading to possible memory corruption. - CVE-2020-16022 (access restriction bypass) An insufficient policy enforcement security issue has been found in the networking component of the chromium browser before 87.0.4280.66. - CVE-2020-16023 (arbitrary code execution) A use after free security issue has been found in the WebCodecs component of the chromium browser before 87.0.4280.66. - CVE-2020-16024 (arbitrary code execution) A heap-based buffer overflow has been found in the UI component of the chromium browser before 87.0.4280.66. - CVE-2020-16025 (arbitrary code execution) A heap-based buffer overflow has been found in the clipboard component of the chromium browser before 87.0.4280.66. - CVE-2020-16026 (arbitrary code execution) A use after free security issue has been found in the WebRTC component of the chromium browser before 87.0.4280.66. - CVE-2020-16027 (access restriction bypass) An insufficient policy enforcement security issue has been found in the developer tools component of the chromium browser before 87.0.4280.66. - CVE-2020-16028 (arbitrary code execution) A heap-based buffer overflow has been found in the WebRTC component of the chromium browser before 87.0.4280.66. - CVE-2020-16029 (access restriction bypass) An inappropriate implementation security issue has been found in the PDFium component of the chromium browser before 87.0.4280.66. - CVE-2020-16030 (insufficient validation) An insufficient data validation security issue has been found in the Blink component of the chromium browser before 87.0.4280.66. - CVE-2020-16031 (content spoofing) An incorrect security UI issue has been found in the tab preview component of the chromium browser before 87.0.4280.66. - CVE-2020-16032 (content spoofing) An incorrect security UI issue has been found in the sharing component of the chromium browser before 87.0.4280.66. - CVE-2020-16033 (content spoofing) A incorrect security UI issue has been found in the WebUSB component of the chromium browser before 87.0.4280.66. - CVE-2020-16034 (access restriction bypass) An inappropriate implementation security issue has been found in the WebRTC component of the chromium browser before 87.0.4280.66. - CVE-2020-16035 (insufficient validation) An insufficient data validation security issue has been found in the cros-disks component of the chromium browser before 87.0.4280.66. - CVE-2020-16036 (access restriction bypass) An inappropriate implementation security issue has been found in the cookies component of the chromium browser before 87.0.4280.66. Impact ====== A remote attacker might be able to trick a user into wrongly assessing the security of a website, WebUSB connection or a tab preview via UI spoofing. Further, a remote attacker may be able to bypass security restrictions, access sensitive information and execute arbitrary code References ========== https://chromereleases.googleblog.com/2020/11/stable-channel-update-for-des… https://chromereleases.googleblog.com/2020/11/stable-channel-update-for-des… https://www.mozilla.org/en-US/security/advisories/mfsa2020-50/#CVE-2020-160… https://bugzilla.mozilla.org/show_bug.cgi?id=1642028 https://crbug.com/1146675 https://crbug.com/1146673 https://crbug.com/1136078 https://crbug.com/1139408 https://crbug.com/1139411 https://crbug.com/1139414 https://crbug.com/1145680 https://crbug.com/1146761 https://crbug.com/1147430 https://crbug.com/1147431 https://crbug.com/1139153 https://crbug.com/1116444 https://crbug.com/1138446 https://crbug.com/1134338 https://crbug.com/1141350 https://crbug.com/1133183 https://crbug.com/1136714 https://crbug.com/1143057 https://crbug.com/1137362 https://crbug.com/1139409 https://crbug.com/830808 https://security.archlinux.org/CVE-2020-16012 https://security.archlinux.org/CVE-2020-16014 https://security.archlinux.org/CVE-2020-16015 https://security.archlinux.org/CVE-2020-16018 https://security.archlinux.org/CVE-2020-16019 https://security.archlinux.org/CVE-2020-16020 https://security.archlinux.org/CVE-2020-16021 https://security.archlinux.org/CVE-2020-16022 https://security.archlinux.org/CVE-2020-16023 https://security.archlinux.org/CVE-2020-16024 https://security.archlinux.org/CVE-2020-16025 https://security.archlinux.org/CVE-2020-16026 https://security.archlinux.org/CVE-2020-16027 https://security.archlinux.org/CVE-2020-16028 https://security.archlinux.org/CVE-2020-16029 https://security.archlinux.org/CVE-2020-16030 https://security.archlinux.org/CVE-2020-16031 https://security.archlinux.org/CVE-2020-16032 https://security.archlinux.org/CVE-2020-16033 https://security.archlinux.org/CVE-2020-16034 https://security.archlinux.org/CVE-2020-16035 https://security.archlinux.org/CVE-2020-16036

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[ASA-202011-10] linux-hardened: multiple issues
by Levente Polyak 10 Nov '20

10 Nov '20

Arch Linux Security Advisory ASA-202011-10 ========================================== Severity: Medium Date : 2020-11-10 CVE-ID : CVE-2020-8694 CVE-2020-25704 Package : linux-hardened Type : multiple issues Remote : No Link : https://security.archlinux.org/AVG-1269 Summary ======= The package linux-hardened before version 5.9.8.a-1 is vulnerable to multiple issues including denial of service and information disclosure. Resolution ========== Upgrade to 5.9.8.a-1. # pacman -Syu "linux-hardened>=5.9.8.a-1" The problems have been fixed upstream in version 5.9.8.a. Workaround ========== - CVE-2020-8694 A temporary measure would be to remove the ability for non-root users to read the current RAPL energy reporting metrics. This can be done with the command: # sudo chmod 400 /sys/class/powercap/intel_rapl/*/energy_uj This mitigation will only work on the current boot and will need to be reapplied at each system boot to remain in effect. Description =========== - CVE-2020-8694 (information disclosure) An information disclosure flaw was found in the Linux kernel's Intel Running Average Power Limit (RAPL) implementation. A local non- privileged attacker could infer secrets by measuring power usage and also infer private data by observing the power usage of calculations performed on the data. - CVE-2020-25704 (denial of service) A memory leak has been found in the perf_event_parse_addr_filter function of Linux before 5.9.7, leading to a denial of service. Impact ====== A local attacker might be able to exhaust the memory available on the system, causing a denial of service, or access sensitive information by observing the power usage. References ========== https://www.openwall.com/lists/oss-security/2020/11/09/1 https://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git/commit/?id=7bdb… https://www.openwall.com/lists/oss-security/2020/11/10/5 https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?… https://platypusattack.com/ https://www.intel.com/content/www/us/en/security-center/advisory/intel-sa-0… https://github.com/anthraxx/linux-hardened/commit/b72aaa9506b38e68f3476a642… https://security.archlinux.org/CVE-2020-8694 https://security.archlinux.org/CVE-2020-25704

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[ASA-202011-9] chromium: arbitrary code execution
by Remi Gacogne 10 Nov '20

10 Nov '20

Arch Linux Security Advisory ASA-202011-9 ========================================= Severity: High Date : 2020-11-10 CVE-ID : CVE-2020-16016 Package : chromium Type : arbitrary code execution Remote : Yes Link : https://security.archlinux.org/AVG-1267 Summary ======= The package chromium before version 86.0.4240.193-1 is vulnerable to arbitrary code execution. Resolution ========== Upgrade to 86.0.4240.193-1. # pacman -Syu "chromium>=86.0.4240.193-1" The problem has been fixed upstream in version 86.0.4240.193. Workaround ========== None. Description =========== An inappropriate implementation issue has been found in chromium before 86.0.4240.193. Impact ====== A remote attacker might be able to execute arbitrary code on the affected host. References ========== https://chromereleases.googleblog.com/2020/11/stable-channel-update-for-des… https://bugs.chromium.org/p/chromium/issues/detail?id=1146679 https://security.archlinux.org/CVE-2020-16016

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[ASA-202011-8] sddm: privilege escalation
by Remi Gacogne 10 Nov '20

10 Nov '20

Arch Linux Security Advisory ASA-202011-8 ========================================= Severity: Medium Date : 2020-11-10 CVE-ID : CVE-2020-28049 Package : sddm Type : privilege escalation Remote : No Link : https://security.archlinux.org/AVG-1266 Summary ======= The package sddm before version 0.19.0-1 is vulnerable to privilege escalation. Resolution ========== Upgrade to 0.19.0-1. # pacman -Syu "sddm>=0.19.0-1" The problem has been fixed upstream in version 0.19.0. Workaround ========== None. Description =========== A local privilege escalation has been discovered in the sddm display manager < 0.19.0. If the auth file is empty, X allows any local application (= any user on the system) to connect. This is currently the case until X wrote the display number to sddm and sddm used that to write the entry into the file. Impact ====== A local user might be able to escalate privileges. References ========== https://www.openwall.com/lists/oss-security/2020/11/04/2 https://github.com/sddm/sddm/commit/be202f533ab98a684c6a007e8d5b4357846bc222 https://security.archlinux.org/CVE-2020-28049

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[ASA-202011-7] salt: multiple issues
by Remi Gacogne 10 Nov '20

10 Nov '20

Arch Linux Security Advisory ASA-202011-7 ========================================= Severity: Critical Date : 2020-11-10 CVE-ID : CVE-2020-16846 CVE-2020-17490 CVE-2020-25592 Package : salt Type : multiple issues Remote : Yes Link : https://security.archlinux.org/AVG-1262 Summary ======= The package salt before version 2019.2.7-1 is vulnerable to multiple issues including arbitrary command execution and access restriction bypass. Resolution ========== Upgrade to 2019.2.7-1. # pacman -Syu "salt>=2019.2.7-1" The problems have been fixed upstream in version 2019.2.7. Workaround ========== None. Description =========== - CVE-2020-16846 (arbitrary command execution) An issue has been found in Salt before 3001.3, 3000.5, 2019.2.7 where an unauthenticated user with network access to the Salt API can use shell injections to run code on the Salt API using the SSH client. - CVE-2020-17490 (access restriction bypass) An issue has been found in Salt before 3001.3, 3000.5, 2019.2.7 where, when using the functions create_ca, create_csr, and create_self_signed_cert in the tls execution module, it will not ensure the key was created with the correct permissions. - CVE-2020-25592 (arbitrary command execution) An issue has been found in Salt before 3001.3, 3000.5, 2019.2.7 where, when using the SSH client, an unauthenticated user can gain access to run commands against targets set in a Salt-SSH roster. Impact ====== A remote, unauthenticated user with network access to the Salt API can execute arbitrary commands. References ========== https://www.saltstack.com/blog/on-november-3-2020-saltstack-publicly-disclo… https://gitlab.com/saltstack/open/salt-patches/-/blob/master/patches/2020/0… https://gitlab.com/saltstack/open/salt-patches/-/blob/master/patches/2020/0… https://security.archlinux.org/CVE-2020-16846 https://security.archlinux.org/CVE-2020-17490 https://security.archlinux.org/CVE-2020-25592

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[ASA-202011-6] firefox: arbitrary code execution
by Remi Gacogne 10 Nov '20

10 Nov '20

Arch Linux Security Advisory ASA-202011-6 ========================================= Severity: Critical Date : 2020-11-10 CVE-ID : CVE-2020-26950 Package : firefox Type : arbitrary code execution Remote : Yes Link : https://security.archlinux.org/AVG-1265 Summary ======= The package firefox before version 82.0.3-1 is vulnerable to arbitrary code execution. Resolution ========== Upgrade to 82.0.3-1. # pacman -Syu "firefox>=82.0.3-1" The problem has been fixed upstream in version 82.0.3. Workaround ========== None. Description =========== A use-after-free has been found in Firefox before 82.0.3 where, in certain circumstances, the MCallGetProperty opcode can be emitted with unmet assumptions. Impact ====== A remote attacker can execute arbitrary code on the affected host. References ========== https://www.mozilla.org/en-US/security/advisories/mfsa2020-49/ https://www.mozilla.org/en-US/security/advisories/mfsa2020-49/#CVE-2020-269… https://bugzilla.mozilla.org/show_bug.cgi?id=1675905 https://security.archlinux.org/CVE-2020-26950

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[ASA-202011-5] gdm: privilege escalation
by Remi Gacogne 10 Nov '20

10 Nov '20

Arch Linux Security Advisory ASA-202011-5 ========================================= Severity: High Date : 2020-11-10 CVE-ID : CVE-2020-16125 Package : gdm Type : privilege escalation Remote : No Link : https://security.archlinux.org/AVG-1264 Summary ======= The package gdm before version 3.38.2-1 is vulnerable to privilege escalation. Resolution ========== Upgrade to 3.38.2-1. # pacman -Syu "gdm>=3.38.2-1" The problem has been fixed upstream in version 3.38.2. Workaround ========== None. Description =========== gdm before 3.38.2 can be tricked into launching gnome-initial-setup, enabling an unprivileged user to create a new user account for themselves. The new account is a member of the sudo group, so this enables the unprivileged user to obtain admin privileges. Impact ====== An unprivileged local user might be able to elevate privileges to root. References ========== https://gitlab.gnome.org/GNOME/gdm/-/issues/642 https://security.archlinux.org/CVE-2020-16125

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[ASA-202011-4] matrix-synapse: cross-site scripting
by Remi Gacogne 10 Nov '20

10 Nov '20

Arch Linux Security Advisory ASA-202011-4 ========================================= Severity: High Date : 2020-11-03 CVE-ID : CVE-2020-26891 Package : matrix-synapse Type : cross-site scripting Remote : Yes Link : https://security.archlinux.org/AVG-1252 Summary ======= The package matrix-synapse before version 1.21.0-1 is vulnerable to cross-site scripting. Resolution ========== Upgrade to 1.21.0-1. # pacman -Syu "matrix-synapse>=1.21.0-1" The problem has been fixed upstream in version 1.21.0. Workaround ========== None. Description =========== A security issue has been found in matrix-synapse before 1.21.0, where HTML pages served via Synapse were vulnerable to cross-site scripting (XSS) attacks. Impact ====== A remote attacker might be able to spoof content and execute code via a cross-site scripting attack. References ========== https://github.com/matrix-org/synapse/releases/tag/v1.21.2 https://github.com/matrix-org/synapse/pull/8444 https://security.archlinux.org/CVE-2020-26891

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