January 2017 - Arch-security - lists.archlinux.org

[arch-security] [ASA-201701-10] lib32-libcurl-compat: multiple issues
by Levente Polyak 04 Jan '17

04 Jan '17

Arch Linux Security Advisory ASA-201701-10 ========================================== Severity: Medium Date : 2017-01-03 CVE-ID : CVE-2016-9586 CVE-2016-9594 Package : lib32-libcurl-compat Type : multiple issues Remote : Yes Link : https://security.archlinux.org/AVG-116 Summary ======= The package lib32-libcurl-compat before version 7.52.1-1 is vulnerable to multiple issues including arbitrary code execution and incorrect calculation. Resolution ========== Upgrade to 7.52.1-1. # pacman -Syu "lib32-libcurl-compat>=7.52.1-1" The problems have been fixed upstream in version 7.52.1. Workaround ========== None. Description =========== - CVE-2016-9586 (arbitrary code execution) libcurl's implementation of the printf() functions triggers a buffer overflow when doing a large floating point output. The bug occurs when the conversion outputs more than 255 bytes. The flaw happens because the floating point conversion is using system functions without the correct boundary checks. The functions have been documented as deprecated for a long time and users are discouraged from using them in "new programs" as they are planned to get removed at a future point. But as the functions are present and there's nothing preventing users from using them, we expect there to be a certain amount of existing users in the wild. If there are any application that accepts a format string from the outside without necessary input filtering, it could allow remote attacks. - CVE-2016-9594 (incorrect calculation) libcurl's (new) internal function that returns a good 32bit random value was implemented poorly and overwrote the pointer instead of writing the value into the buffer the pointer pointed to. This random value is used to generate nonces for Digest and NTLM authentication, for generating boundary strings in HTTP formposts and more. Having a weak or virtually non-existent random there makes these operations vulnerable. This function has been introduced in 7.52.0 Impact ====== A remote attacker is able to execute arbitrary code on a target machine by sending crafted data to the server. In addition, the nonces generated by libcurl 7.52.0 were not truly random, which allowed for an attacker to derive sensitive information (e.g., session keys). References ========== https://bugs.archlinux.org/task/52247 https://curl.haxx.se/docs/adv_20161221A.html https://curl.haxx.se/docs/adv_20161223.html https://security.archlinux.org/CVE-2016-9586 https://security.archlinux.org/CVE-2016-9594

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[arch-security] [ASA-201701-9] lib32-curl: multiple issues
by Levente Polyak 04 Jan '17

04 Jan '17

Arch Linux Security Advisory ASA-201701-9 ========================================= Severity: Medium Date : 2017-01-03 CVE-ID : CVE-2016-9586 CVE-2016-9594 Package : lib32-curl Type : multiple issues Remote : Yes Link : https://security.archlinux.org/AVG-115 Summary ======= The package lib32-curl before version 7.52.1-1 is vulnerable to multiple issues including arbitrary code execution and incorrect calculation. Resolution ========== Upgrade to 7.52.1-1. # pacman -Syu "lib32-curl>=7.52.1-1" The problems have been fixed upstream in version 7.52.1. Workaround ========== None. Description =========== - CVE-2016-9586 (arbitrary code execution) libcurl's implementation of the printf() functions triggers a buffer overflow when doing a large floating point output. The bug occurs when the conversion outputs more than 255 bytes. The flaw happens because the floating point conversion is using system functions without the correct boundary checks. The functions have been documented as deprecated for a long time and users are discouraged from using them in "new programs" as they are planned to get removed at a future point. But as the functions are present and there's nothing preventing users from using them, we expect there to be a certain amount of existing users in the wild. If there are any application that accepts a format string from the outside without necessary input filtering, it could allow remote attacks. - CVE-2016-9594 (incorrect calculation) libcurl's (new) internal function that returns a good 32bit random value was implemented poorly and overwrote the pointer instead of writing the value into the buffer the pointer pointed to. This random value is used to generate nonces for Digest and NTLM authentication, for generating boundary strings in HTTP formposts and more. Having a weak or virtually non-existent random there makes these operations vulnerable. This function has been introduced in 7.52.0 Impact ====== A remote attacker is able to execute arbitrary code on a target machine by sending crafted data to the server. In addition, the nonces generated by libcurl 7.52.0 were not truly random, which allowed for an attacker to derive sensitive information (e.g., session keys). References ========== https://bugs.archlinux.org/task/52247 https://curl.haxx.se/docs/adv_20161221A.html https://curl.haxx.se/docs/adv_20161223.html https://security.archlinux.org/CVE-2016-9586 https://security.archlinux.org/CVE-2016-9594

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[arch-security] [ASA-201701-8] libcurl-gnutls: multiple issues
by Levente Polyak 04 Jan '17

04 Jan '17

Arch Linux Security Advisory ASA-201701-8 ========================================= Severity: Medium Date : 2017-01-03 CVE-ID : CVE-2016-9586 CVE-2016-9594 Package : libcurl-gnutls Type : multiple issues Remote : Yes Link : https://security.archlinux.org/AVG-114 Summary ======= The package libcurl-gnutls before version 7.52.1-1 is vulnerable to multiple issues including arbitrary code execution and incorrect calculation. Resolution ========== Upgrade to 7.52.1-1. # pacman -Syu "libcurl-gnutls>=7.52.1-1" The problems have been fixed upstream in version 7.52.1. Workaround ========== None. Description =========== - CVE-2016-9586 (arbitrary code execution) libcurl's implementation of the printf() functions triggers a buffer overflow when doing a large floating point output. The bug occurs when the conversion outputs more than 255 bytes. The flaw happens because the floating point conversion is using system functions without the correct boundary checks. The functions have been documented as deprecated for a long time and users are discouraged from using them in "new programs" as they are planned to get removed at a future point. But as the functions are present and there's nothing preventing users from using them, we expect there to be a certain amount of existing users in the wild. If there are any application that accepts a format string from the outside without necessary input filtering, it could allow remote attacks. - CVE-2016-9594 (incorrect calculation) libcurl's (new) internal function that returns a good 32bit random value was implemented poorly and overwrote the pointer instead of writing the value into the buffer the pointer pointed to. This random value is used to generate nonces for Digest and NTLM authentication, for generating boundary strings in HTTP formposts and more. Having a weak or virtually non-existent random there makes these operations vulnerable. This function has been introduced in 7.52.0 Impact ====== A remote attacker is able to execute arbitrary code on a target machine by sending crafted data to the server. In addition, the nonces generated by libcurl 7.52.0 were not truly random, which allowed for an attacker to derive sensitive information (e.g., session keys). References ========== https://bugs.archlinux.org/task/52247 https://curl.haxx.se/docs/adv_20161221A.html https://curl.haxx.se/docs/adv_20161223.html https://security.archlinux.org/CVE-2016-9586 https://security.archlinux.org/CVE-2016-9594

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[arch-security] [ASA-201701-7] libcurl-compat: multiple issues
by Levente Polyak 04 Jan '17

04 Jan '17

Arch Linux Security Advisory ASA-201701-7 ========================================= Severity: Medium Date : 2017-01-03 CVE-ID : CVE-2016-9586 CVE-2016-9594 Package : libcurl-compat Type : multiple issues Remote : Yes Link : https://security.archlinux.org/AVG-113 Summary ======= The package libcurl-compat before version 7.52.1-1 is vulnerable to multiple issues including arbitrary code execution and incorrect calculation. Resolution ========== Upgrade to 7.52.1-1. # pacman -Syu "libcurl-compat>=7.52.1-1" The problems have been fixed upstream in version 7.52.1. Workaround ========== None. Description =========== - CVE-2016-9586 (arbitrary code execution) libcurl's implementation of the printf() functions triggers a buffer overflow when doing a large floating point output. The bug occurs when the conversion outputs more than 255 bytes. The flaw happens because the floating point conversion is using system functions without the correct boundary checks. The functions have been documented as deprecated for a long time and users are discouraged from using them in "new programs" as they are planned to get removed at a future point. But as the functions are present and there's nothing preventing users from using them, we expect there to be a certain amount of existing users in the wild. If there are any application that accepts a format string from the outside without necessary input filtering, it could allow remote attacks. - CVE-2016-9594 (incorrect calculation) libcurl's (new) internal function that returns a good 32bit random value was implemented poorly and overwrote the pointer instead of writing the value into the buffer the pointer pointed to. This random value is used to generate nonces for Digest and NTLM authentication, for generating boundary strings in HTTP formposts and more. Having a weak or virtually non-existent random there makes these operations vulnerable. This function has been introduced in 7.52.0 Impact ====== A remote attacker is able to execute arbitrary code on a target machine by sending crafted data to the server. In addition, the nonces generated by libcurl 7.52.0 were not truly random, which allowed for an attacker to derive sensitive information (e.g., session keys). References ========== https://bugs.archlinux.org/task/52247 https://curl.haxx.se/docs/adv_20161221A.html https://curl.haxx.se/docs/adv_20161223.html https://security.archlinux.org/CVE-2016-9586 https://security.archlinux.org/CVE-2016-9594

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[arch-security] [ASA-201701-6] lib32-libpng12: denial of service
by Levente Polyak 02 Jan '17

02 Jan '17

Arch Linux Security Advisory ASA-201701-6 ========================================= Severity: Low Date : 2017-01-02 CVE-ID : CVE-2016-10087 Package : lib32-libpng12 Type : denial of service Remote : Yes Link : https://security.archlinux.org/AVG-121 Summary ======= The package lib32-libpng12 before version 1.2.57-1 is vulnerable to denial of service. Resolution ========== Upgrade to 1.2.57-1. # pacman -Syu "lib32-libpng12>=1.2.57-1" The problem has been fixed upstream in version 1.2.57. Workaround ========== None. Description =========== A NULL-pointer dereference issue has been found in png_set_text_2() in libpng. To be vulnerable, an application has to load a text chunk into the png structure, then delete all text, then add another text chunk to the same png structure. Impact ====== A remote attacker is able to crash the application under certain circumstances. References ========== http://seclists.org/oss-sec/2016/q4/782 https://security.archlinux.org/CVE-2016-10087

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[arch-security] [ASA-201701-5] lib32-libpng: denial of service
by Levente Polyak 02 Jan '17

02 Jan '17

Arch Linux Security Advisory ASA-201701-5 ========================================= Severity: Low Date : 2017-01-02 CVE-ID : CVE-2016-10087 Package : lib32-libpng Type : denial of service Remote : Yes Link : https://security.archlinux.org/AVG-120 Summary ======= The package lib32-libpng before version 1.6.27-1 is vulnerable to denial of service. Resolution ========== Upgrade to 1.6.27-1. # pacman -Syu "lib32-libpng>=1.6.27-1" The problem has been fixed upstream in version 1.6.27. Workaround ========== None. Description =========== A NULL-pointer dereference issue has been found in png_set_text_2() in libpng. To be vulnerable, an application has to load a text chunk into the png structure, then delete all text, then add another text chunk to the same png structure. Impact ====== A remote attacker is able to crash the application under certain circumstances. References ========== http://seclists.org/oss-sec/2016/q4/782 https://security.archlinux.org/CVE-2016-10087

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[arch-security] [ASA-201701-4] libpng12: denial of service
by Levente Polyak 02 Jan '17

02 Jan '17

Arch Linux Security Advisory ASA-201701-4 ========================================= Severity: Low Date : 2017-01-02 CVE-ID : CVE-2016-10087 Package : libpng12 Type : denial of service Remote : Yes Link : https://security.archlinux.org/AVG-122 Summary ======= The package libpng12 before version 1.2.57-1 is vulnerable to denial of service. Resolution ========== Upgrade to 1.2.57-1. # pacman -Syu "libpng12>=1.2.57-1" The problem has been fixed upstream in version 1.2.57. Workaround ========== None. Description =========== A NULL-pointer dereference issue has been found in png_set_text_2() in libpng. To be vulnerable, an application has to load a text chunk into the png structure, then delete all text, then add another text chunk to the same png structure. Impact ====== A remote attacker is able to crash the application under certain circumstances. References ========== http://seclists.org/oss-sec/2016/q4/782 https://security.archlinux.org/CVE-2016-10087

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[arch-security] [ASA-201701-3] gst-plugins-bad: multiple issues
by Santiago Torres-Arias 02 Jan '17

02 Jan '17

Arch Linux Security Advisory ASA-201701-3 ========================================= Severity: High Date : 2017-01-02 CVE-ID : CVE-2016-9445 CVE-2016-9446 Package : gst-plugins-bad Type : multiple issues Remote : Yes Link : https://security.archlinux.org/AVG-76 Summary ======= The package gst-plugins-bad before version 1.10.2-2 is vulnerable to multiple issues including arbitrary code execution and information disclosure. Resolution ========== Upgrade to 1.10.2-2. # pacman -Syu "gst-plugins-bad>=1.10.2-2" The problems have been fixed upstream in version 1.10.2. Workaround ========== None Description =========== - CVE-2016-9445 (arbitrary code execution) The vmnc decoder in gst-plugins-bad of the gstreamer code base contains a width * height * depth integer overflow in the allocation of the render buffer inside gst/vmnc/vmncdec.c. - CVE-2016-9446 (information disclosure) An information disclosure vulnerability has been discovered in the render canvas functionality of gst-plugins-bad due to the lack of initializing the returned heap area of g_malloc(). An example for the information leak would be thumbnailing a simple 1 frame vmnc movie that does not draw to the allocated render canvas at all. This could be a problem for anyone using gstreamer in a server environment to provide a thumbnailing services. Impact ====== An attacker is able to provide a crafted VMNC file that would allow for either arbitrary code execution or disclose information of the memory of the running host. References ========== http://www.openwall.com/lists/oss-security/2016/11/18/13 https://scarybeastsecurity.blogspot.de/2016/11/0day-poc-risky-design-decisi… https://cgit.freedesktop.org/gstreamer/gst-plugins-bad/commit/gst/vmnc/vmnc… https://bugzilla.gnome.org/show_bug.cgi?id=774533 https://security.archlinux.org/CVE-2016-9445 https://security.archlinux.org/CVE-2016-9446

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[arch-security] [ASA-201701-2] libpng: denial of service
by Levente Polyak 02 Jan '17

02 Jan '17

Arch Linux Security Advisory ASA-201701-2 ========================================= Severity: Low Date : 2017-01-01 CVE-ID : CVE-2016-10087 Package : libpng Type : denial of service Remote : Yes Link : https://security.archlinux.org/AVG-119 Summary ======= The package libpng before version 1.6.27-1 is vulnerable to denial of service. Resolution ========== Upgrade to 1.6.27-1. # pacman -Syu "libpng>=1.6.27-1" The problem has been fixed upstream in version 1.6.27. Workaround ========== None. Description =========== A NULL-pointer dereference issue has been found in png_set_text_2() in libpng <= 1.6.26 and >= 0.71. To be vulnerable, an application has to load a text chunk into the png structure, then delete all text, then add another text chunk to the same png structure. Impact ====== A remote attacker is able to crash the application under certain circumstances. References ========== http://seclists.org/oss-sec/2016/q4/782 https://security.archlinux.org/CVE-2016-10087

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[arch-security] [ASA-201701-1] libwmf: multiple issues
by Levente Polyak 01 Jan '17

01 Jan '17

Arch Linux Security Advisory ASA-201701-1 ========================================= Severity: Critical Date : 2017-01-01 CVE-ID : CVE-2006-3376 CVE-2007-0455 CVE-2007-2756 CVE-2007-3472 CVE-2007-3473 CVE-2007-3477 CVE-2009-1364 CVE-2009-3546 CVE-2015-0848 CVE-2015-4588 CVE-2015-4695 CVE-2015-4696 CVE-2016-9011 Package : libwmf Type : multiple issues Remote : Yes Link : https://security.archlinux.org/AVG-16 Summary ======= The package libwmf before version 0.2.8.4-14 is vulnerable to multiple issues including arbitrary code execution and denial of service. Resolution ========== Upgrade to 0.2.8.4-14. # pacman -Syu "libwmf>=0.2.8.4-14" The problems have been fixed upstream but no release is available yet. Workaround ========== None. Description =========== - CVE-2006-3376 (arbitrary code execution) Integer overflow in player.c in libwmf 0.2.8.4, as used in multiple products including (1) wv, (2) abiword, (3) freetype, (4) gimp, (5) libgsf, and (6) imagemagick allows remote attackers to execute arbitrary code via the MaxRecordSize header field in a WMF file. - CVE-2007-0455 (arbitrary code execution) Buffer overflow in the gdImageStringFTEx function in gdft.c in GD Graphics Library 2.0.33 and earlier allows remote attackers to cause a denial of service (application crash) and possibly execute arbitrary code via a crafted string with a JIS encoded font. - CVE-2007-2756 (denial of service) The gdPngReadData function in libgd 2.0.34 allows user-assisted attackers to cause a denial of service (CPU consumption) via a crafted PNG image with truncated data, which causes an infinite loop in the png_read_info function in libpng. - CVE-2007-3472 (denial of service) Integer overflow in gdImageCreateTrueColor function in the GD Graphics Library (libgd) before 2.0.35 allows user-assisted remote attackers to have unspecified attack vectors and impact. - CVE-2007-3473 (denial of service) The gdImageCreateXbm function in the GD Graphics Library (libgd) before 2.0.35 allows user-assisted remote attackers to cause a denial of service (crash) via unspecified vectors involving a gdImageCreate failure. - CVE-2007-3477 (denial of service) The (a) imagearc and (b) imagefilledarc functions in GD Graphics Library (libgd) before 2.0.35 allow attackers to cause a denial of service (CPU consumption) via a large (1) start or (2) end angle degree value. - CVE-2009-1364 (arbitrary code execution) Use-after-free vulnerability in the embedded GD library in libwmf 0.2.8.4 allows context-dependent attackers to cause a denial of service (application crash) or possibly execute arbitrary code via a crafted WMF file. - CVE-2009-3546 (arbitrary code execution) The _gdGetColors function in gd_gd.c in PHP 5.2.11 and 5.3.x before 5.3.1, and the GD Graphics Library 2.x, does not properly verify a certain colorsTotal structure member, which might allow remote attackers to conduct buffer overflow or buffer over-read attacks via a crafted GD file. - CVE-2015-0848 (arbitrary code execution) It was discovered that libwmf did not correctly process certain WMF (Windows Metafiles) containing BMP images. By tricking a victim into opening a specially crafted WMF file in an application using libwmf, a remote attacker could possibly use this flaw to execute arbitrary code with the privileges of the user running the application. - CVE-2015-4588 (arbitrary code execution) It was discovered that libwmf did not correctly process certain WMF (Windows Metafiles) with embedded BMP images. By tricking a victim into opening a specially crafted WMF file in an application using libwmf, a remote attacker could possibly use this flaw to execute arbitrary code with the privileges of the user running the application. - CVE-2015-4695 (arbitrary code execution) It was discovered that libwmf did not properly process certain WMF files. By tricking a victim into opening a specially crafted WMF file in an application using libwmf, a remote attacker could possibly exploit this flaw to cause a crash or execute arbitrary code with the privileges of the user running the application. - CVE-2015-4696 (arbitrary code execution) It was discovered that libwmf did not properly process certain WMF files. By tricking a victim into opening a specially crafted WMF file in an application using libwmf, a remote attacker could possibly exploit this flaw to cause a crash or execute arbitrary code with the privileges of the user running the application. - CVE-2016-9011 (denial of service) A memory allocation failure in function wmf_malloc in api.c was reported in libwmf. Opening a maliciously crafted file could cause the application to crash. Impact ====== A remote attacker is able to use specially crafted files to crash the application or execute arbitrary code on the affected host. References ========== https://bugs.archlinux.org/task/49162 http://www.openwall.com/lists/oss-security/2015/06/16/4 https://blogs.gentoo.org/ago/2016/10/18/libwmf-memory-allocation-failure-in… https://security.archlinux.org/CVE-2006-3376 https://security.archlinux.org/CVE-2007-0455 https://security.archlinux.org/CVE-2007-2756 https://security.archlinux.org/CVE-2007-3472 https://security.archlinux.org/CVE-2007-3473 https://security.archlinux.org/CVE-2007-3477 https://security.archlinux.org/CVE-2009-1364 https://security.archlinux.org/CVE-2009-3546 https://security.archlinux.org/CVE-2015-0848 https://security.archlinux.org/CVE-2015-4588 https://security.archlinux.org/CVE-2015-4695 https://security.archlinux.org/CVE-2015-4696 https://security.archlinux.org/CVE-2016-9011

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