December 2020 - Arch-security - lists.archlinux.org

[ASA-202011-25] mutt: silent downgrade
by Morten Linderud 05 Dec '20

05 Dec '20

Arch Linux Security Advisory ASA-202011-25 ========================================== Severity: High Date : 2020-11-26 CVE-ID : CVE-2020-28896 Package : mutt Type : silent downgrade Remote : Yes Link : https://security.archlinux.org/AVG-1288 Summary ======= The package mutt before version 2.0.2-1 is vulnerable to silent downgrade. Resolution ========== Upgrade to 2.0.2-1. # pacman -Syu "mutt>=2.0.2-1" The problem has been fixed upstream in version 2.0.2. Workaround ========== None. Description =========== A security issue has been found in Mutt before version 2.0.2 and NeoMutt before version 20201120 that could result in authentication credentials being sent over an unencrypted connection, without $ssl_force_tls being consulted. During connection, if the server provided an illegal initial response, the application "bailed", but did not actually close the connection. The calling code relied on the connection status to decide to continue with authentication, instead of checking the "bail" return value. Impact ====== An attacker in position of man-in-the-middle might be able to intercept and alter messages between the e-mail client and the server. References ========== http://lists.mutt.org/pipermail/mutt-users/Week-of-Mon-20201116/002134.html https://mailman.neomutt.org/pipermail/neomutt-users-neomutt.org/2020-Novemb… https://gitlab.com/muttmua/mutt/-/commit/04b06aaa3e0cc0022b9b01dbca2863756e… https://github.com/neomutt/neomutt/commit/9c36717a3e2af1f2c1b7242035455ec81… https://security.archlinux.org/CVE-2020-28896

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[ASA-202011-24] neomutt: silent downgrade
by Morten Linderud 05 Dec '20

05 Dec '20

Arch Linux Security Advisory ASA-202011-24 ========================================== Severity: High Date : 2020-11-26 CVE-ID : CVE-2020-28896 Package : neomutt Type : silent downgrade Remote : Yes Link : https://security.archlinux.org/AVG-1289 Summary ======= The package neomutt before version 20201120-1 is vulnerable to silent downgrade. Resolution ========== Upgrade to 20201120-1. # pacman -Syu "neomutt>=20201120-1" The problem has been fixed upstream in version 20201120. Workaround ========== None. Description =========== A security issue has been found in Mutt before version 2.0.2 and NeoMutt before version 20201120 that could result in authentication credentials being sent over an unencrypted connection, without $ssl_force_tls being consulted. During connection, if the server provided an illegal initial response, the application "bailed", but did not actually close the connection. The calling code relied on the connection status to decide to continue with authentication, instead of checking the "bail" return value. Impact ====== An attacker in position of man-in-the-middle might be able to intercept and alter messages between the e-mail client and the server. References ========== http://lists.mutt.org/pipermail/mutt-users/Week-of-Mon-20201116/002134.html https://mailman.neomutt.org/pipermail/neomutt-users-neomutt.org/2020-Novemb… https://gitlab.com/muttmua/mutt/-/commit/04b06aaa3e0cc0022b9b01dbca2863756e… https://github.com/neomutt/neomutt/commit/9c36717a3e2af1f2c1b7242035455ec81… https://security.archlinux.org/CVE-2020-28896

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[ASA-202011-23] matrix-synapse: denial of service
by Morten Linderud 05 Dec '20

05 Dec '20

Arch Linux Security Advisory ASA-202011-23 ========================================== Severity: High Date : 2020-11-26 CVE-ID : CVE-2020-26890 Package : matrix-synapse Type : denial of service Remote : Yes Link : https://security.archlinux.org/AVG-1296 Summary ======= The package matrix-synapse before version 1.20.1-1 is vulnerable to denial of service. Resolution ========== Upgrade to 1.20.1-1. # pacman -Syu "matrix-synapse>=1.20.1-1" The problem has been fixed upstream in version 1.20.1. Workaround ========== None. Description =========== Matrix Synapse before 1.20.0 erroneously permits non-standard NaN, Infinity, and -Infinity JSON values in fields of m.room.member events, allowing remote attackers to execute a denial of service attack against the federation and common Matrix clients. If such a malformed event is accepted into the room's state, the impact is long-lasting and is not fixed by an upgrade to a newer version, requiring the event to be manually redacted instead. Since events are replicated to servers of other room members, the impact is not constrained to the server of the event sender. Impact ====== A remote attacker might be able to cause a denial of service via a crafted event. References ========== https://github.com/matrix-org/synapse/security/advisories/GHSA-4mp3-385r-v6… https://github.com/matrix-org/synapse/pull/8106 https://github.com/matrix-org/synapse/pull/8106/commits/c88c15b5fcf26940515… https://github.com/matrix-org/synapse/pull/8106/commits/248d8284fa850289689… https://github.com/matrix-org/synapse/pull/8106/commits/5516ae216d8cfe34b04… https://github.com/matrix-org/synapse/pull/8291 https://github.com/matrix-org/synapse/pull/8291/commits/1cad688bda57dcc8f9c… https://github.com/matrix-org/synapse/pull/8291/commits/4d654058dec5a77e2d1… https://security.archlinux.org/CVE-2020-26890

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[ASA-202011-22] ceph: multiple issues
by Morten Linderud 05 Dec '20

05 Dec '20

Arch Linux Security Advisory ASA-202011-22 ========================================== Severity: High Date : 2020-11-26 CVE-ID : CVE-2020-1759 CVE-2020-1760 CVE-2020-10753 CVE-2020-25660 Package : ceph Type : multiple issues Remote : Yes Link : https://security.archlinux.org/AVG-1195 Summary ======= The package ceph before version 15.2.6-1 is vulnerable to multiple issues including authentication bypass, content spoofing, cross-site scripting and private key recovery. Resolution ========== Upgrade to 15.2.6-1. # pacman -Syu "ceph>=15.2.6-1" The problems have been fixed upstream in version 15.2.6. Workaround ========== None. Description =========== - CVE-2020-1759 (private key recovery) A vulnerability was found in Red Hat Ceph Storage 4 and Red Hat Openshift Container Storage 4.2, where a nonce reuse vulnerability was discovered in the secure mode of the messenger v2 protocol, which can allow an attacker to forge auth tags and potentially manipulate the data by leveraging the reuse of a nonce in a session. Messages encrypted using a reused nonce value are susceptible to serious confidentiality and integrity attacks. - CVE-2020-1760 (cross-site scripting) A flaw was found in the Ceph Object Gateway, where it supports request sent by an anonymous user in Amazon S3. This flaw could lead to potential XSS attacks due to the lack of proper neutralization of untrusted input. If the attacker knows the path to a publicly readable object on any RGW cluster and the object is at least large enough to cover the attack body then it is possible to run an XSS on any object. - CVE-2020-10753 (content spoofing) A flaw was found in the Ceph Storage RadosGW (Ceph Object Gateway). The vulnerability is related to the injection of HTTP headers via a CORS ExposeHeader tag. The newline character in the ExposeHeader tag in the CORS configuration file generates a header injection in the response when the CORS request is made. This issue affects the RadosGW S3 API, it does not affect the Swift API. - CVE-2020-25660 (authentication bypass) A flaw was found in the Cephx authentication protocol in versions before 15.2.6 and before 14.2.14, where it does not verify Ceph clients correctly and is then vulnerable to replay attacks in Nautilus. This flaw allows an attacker with access to the Ceph cluster network to authenticate with the Ceph service via a packet sniffer and perform actions allowed by the Ceph service. This issue is a reintroduction of CVE-2018-1128, affecting the msgr2 protocol. The msgr2 protocol is used for all communication except older clients that do not support the msgr2 protocol. The msgr1 protocol is not affected. The highest threat from this vulnerability is to confidentiality, integrity, and system availability. Impact ====== An attacker might be able to decrypt and force Ceph messages, bypass CORS and exploit XSS to trick a user into performing an unwanted action. References ========== https://bugs.archlinux.org/task/67047 https://docs.ceph.com/en/latest/releases/octopus/#v15-2-1-octopus https://docs.ceph.com/en/latest/releases/nautilus/#v14-2-9-nautilus https://www.openwall.com/lists/oss-security/2020/04/07/2 https://github.com/ceph/ceph/pull/34482 https://github.com/ceph/ceph/commit/47c7e623546a7a33bd6bbddfb899fa9c9a40f40a https://github.com/ceph/ceph/commit/f6c5ad8a5f534d73cba9c6bd794a89e879c46ecc https://www.openwall.com/lists/oss-security/2020/04/07/1 https://github.com/ceph/ceph/commit/fce0b267446d6f3f631bb4680ebc3527bbbea002 https://github.com/ceph/ceph/commit/87a63d1743ec6428b43cc5a5977fa5e90f50b7ed https://github.com/ceph/ceph/commit/c7da604cb101cbe78a257a29498a98c69964e0a6 https://docs.ceph.com/en/latest/releases/nautilus/#v14-2-10-nautilus https://docs.ceph.com/en/latest/releases/octopus/#v15-2-4-octopus https://github.com/ceph/ceph/pull/35773 https://github.com/ceph/ceph/commit/ea0a33719e1765a79eb0c7137262b8e93cd073e3 https://ceph.io/community/v15-2-6-octopus-released/ https://ceph.io/releases/v14-2-14-nautilus-released/ https://github.com/ceph/ceph/commit/4a82c72e3bdddcb625933e83af8b50a444b961f1 https://github.com/ceph/ceph/commit/6f5c4152ca2c6423e665cde2196c6301f76043a2 https://github.com/ceph/ceph/commit/949e2e595eda553aa68f697cee1dcfff3c09cf3f https://security.archlinux.org/CVE-2020-1759 https://security.archlinux.org/CVE-2020-1760 https://security.archlinux.org/CVE-2020-10753 https://security.archlinux.org/CVE-2020-25660

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