CVE-2021-44538 SUSE CVE security@suse.de SUSE Security Team SUSE CVE-2021-44538 Interim 1 20 2025-05-17T01:49:04Z current 2021-12-25T02:04:20Z 2025-05-17T01:49:04Z cve-database/bin/generate-cvrf-cve.pl 2020-12-27T01:00:00Z CVE-2021-44538 The olm_session_describe function in Matrix libolm before 3.2.7 is vulnerable to a buffer overflow. The Olm session object represents a cryptographic channel between two parties. Therefore, its state is partially controllable by the remote party of the channel. Attackers can construct a crafted sequence of messages to manipulate the state of the receiver's session in such a way that, for some buffer sizes, a buffer overflow happens on a call to olm_session_describe. Furthermore, safe buffer sizes were undocumented. The overflow content is partially controllable by the attacker and limited to ASCII spaces and digits. The known affected products are Element Web And SchildiChat Web. The CVRF data is provided by SUSE under the Creative Commons License 4.0 with Attribution (CC-BY-4.0). https://lists.suse.com/pipermail/sle-security-updates/2022-January/009996.html E-Mail link for SUSE-SU-2022:0058-1 https://lists.opensuse.org/archives/list/security-announce@lists.opensuse.org/thread/ZTUQBSMWYBVSTVDYNNRW5EOI5CCOSTPZ/ E-Mail link for openSUSE-SU-2022:0058-1 https://www.suse.com/support/security/rating/ SUSE Security Ratings SUSE Linux Enterprise Workstation Extension 15 SP3 SUSE Linux Enterprise Workstation Extension 15 SP4 SUSE Linux Enterprise Workstation Extension 15 SP5 SUSE Linux Enterprise Workstation Extension 15 SP6 SUSE Linux Enterprise Workstation Extension 15 SP7 SUSE Linux Enterprise Module for Package Hub 15 SP4 SUSE Linux Enterprise Module for Package Hub 15 SP5 SUSE Linux Enterprise Module for Package Hub 15 SP6 SUSE Linux Enterprise Module for Package Hub 15 SP7 SUSE Linux Enterprise Workstation Extension 15 SP3 SUSE Linux Enterprise Workstation Extension 15 SP4 SUSE Linux Enterprise Workstation Extension 15 SP5 SUSE Linux Enterprise Workstation Extension 15 SP6 SUSE Linux Enterprise Workstation Extension 15 SP7 SUSE Linux Enterprise Workstation Extension 15 SP3 SUSE Linux Enterprise Workstation Extension 15 SP4 SUSE Linux Enterprise Workstation Extension 15 SP5 SUSE Linux Enterprise Workstation Extension 15 SP6 SUSE Linux Enterprise Workstation Extension 15 SP7 openSUSE Leap 15.3 openSUSE Leap 15.4 openSUSE Tumbleweed MozillaThunderbird-91.4.1-1.1 MozillaThunderbird-91.4.1-8.48.1 MozillaThunderbird-91.8.0-150200.8.65.1 MozillaThunderbird-translations-common-91.4.1-1.1 MozillaThunderbird-translations-common-91.4.1-8.48.1 MozillaThunderbird-translations-common-91.8.0-150200.8.65.1 MozillaThunderbird-translations-other-91.4.1-1.1 MozillaThunderbird-translations-other-91.4.1-8.48.1 MozillaThunderbird-translations-other-91.8.0-150200.8.65.1 MozillaThunderbird-91.4.1-8.48.1 as a component of SUSE Linux Enterprise Module for Package Hub 15 SP4 MozillaThunderbird-translations-common-91.4.1-8.48.1 as a component of SUSE Linux Enterprise Module for Package Hub 15 SP4 MozillaThunderbird-translations-other-91.4.1-8.48.1 as a component of SUSE Linux Enterprise Module for Package Hub 15 SP4 MozillaThunderbird-91.4.1-8.48.1 as a component of SUSE Linux Enterprise Module for Package Hub 15 SP5 MozillaThunderbird-translations-common-91.4.1-8.48.1 as a component of SUSE Linux Enterprise Module for Package Hub 15 SP5 MozillaThunderbird-translations-other-91.4.1-8.48.1 as a component of SUSE Linux Enterprise Module for Package Hub 15 SP5 MozillaThunderbird-91.4.1-8.48.1 as a component of SUSE Linux Enterprise Module for Package Hub 15 SP6 MozillaThunderbird-translations-common-91.4.1-8.48.1 as a component of SUSE Linux Enterprise Module for Package Hub 15 SP6 MozillaThunderbird-translations-other-91.4.1-8.48.1 as a component of SUSE Linux Enterprise Module for Package Hub 15 SP6 MozillaThunderbird-91.4.1-8.48.1 as a component of SUSE Linux Enterprise Module for Package Hub 15 SP7 MozillaThunderbird-translations-common-91.4.1-8.48.1 as a component of SUSE Linux Enterprise Module for Package Hub 15 SP7 MozillaThunderbird-translations-other-91.4.1-8.48.1 as a component of SUSE Linux Enterprise Module for Package Hub 15 SP7 MozillaThunderbird-91.4.1-8.48.1 as a component of SUSE Linux Enterprise Workstation Extension 15 SP3 MozillaThunderbird-translations-common-91.4.1-8.48.1 as a component of SUSE Linux Enterprise Workstation Extension 15 SP3 MozillaThunderbird-translations-other-91.4.1-8.48.1 as a component of SUSE Linux Enterprise Workstation Extension 15 SP3 MozillaThunderbird-91.4.1-8.48.1 as a component of SUSE Linux Enterprise Workstation Extension 15 SP4 MozillaThunderbird-translations-common-91.4.1-8.48.1 as a component of SUSE Linux Enterprise Workstation Extension 15 SP4 MozillaThunderbird-translations-other-91.4.1-8.48.1 as a component of SUSE Linux Enterprise Workstation Extension 15 SP4 MozillaThunderbird-91.4.1-8.48.1 as a component of SUSE Linux Enterprise Workstation Extension 15 SP5 MozillaThunderbird-translations-common-91.4.1-8.48.1 as a component of SUSE Linux Enterprise Workstation Extension 15 SP5 MozillaThunderbird-translations-other-91.4.1-8.48.1 as a component of SUSE Linux Enterprise Workstation Extension 15 SP5 MozillaThunderbird-91.4.1-8.48.1 as a component of SUSE Linux Enterprise Workstation Extension 15 SP6 MozillaThunderbird-translations-common-91.4.1-8.48.1 as a component of SUSE Linux Enterprise Workstation Extension 15 SP6 MozillaThunderbird-translations-other-91.4.1-8.48.1 as a component of SUSE Linux Enterprise Workstation Extension 15 SP6 MozillaThunderbird-91.4.1-8.48.1 as a component of SUSE Linux Enterprise Workstation Extension 15 SP7 MozillaThunderbird-translations-common-91.4.1-8.48.1 as a component of SUSE Linux Enterprise Workstation Extension 15 SP7 MozillaThunderbird-translations-other-91.4.1-8.48.1 as a component of SUSE Linux Enterprise Workstation Extension 15 SP7 MozillaThunderbird-91.4.1-8.48.1 as a component of openSUSE Leap 15.3 MozillaThunderbird-translations-common-91.4.1-8.48.1 as a component of openSUSE Leap 15.3 MozillaThunderbird-translations-other-91.4.1-8.48.1 as a component of openSUSE Leap 15.3 MozillaThunderbird-91.8.0-150200.8.65.1 as a component of openSUSE Leap 15.4 MozillaThunderbird-translations-common-91.8.0-150200.8.65.1 as a component of openSUSE Leap 15.4 MozillaThunderbird-translations-other-91.8.0-150200.8.65.1 as a component of openSUSE Leap 15.4 MozillaThunderbird-91.4.1-1.1 as a component of openSUSE Tumbleweed MozillaThunderbird-translations-common-91.4.1-1.1 as a component of openSUSE Tumbleweed MozillaThunderbird-translations-other-91.4.1-1.1 as a component of openSUSE Tumbleweed The olm_session_describe function in Matrix libolm before 3.2.7 is vulnerable to a buffer overflow. The Olm session object represents a cryptographic channel between two parties. Therefore, its state is partially controllable by the remote party of the channel. Attackers can construct a crafted sequence of messages to manipulate the state of the receiver's session in such a way that, for some buffer sizes, a buffer overflow happens on a call to olm_session_describe. Furthermore, safe buffer sizes were undocumented. The overflow content is partially controllable by the attacker and limited to ASCII spaces and digits. The known affected products are Element Web And SchildiChat Web. CVE-2021-44538 SUSE Linux Enterprise Module for Open Buildservice Development Tools 15 SP4:MozillaThunderbird-translations-common-91.4.1-8.48.1 SUSE Linux Enterprise Module for Open Buildservice Development Tools 15 SP4:MozillaThunderbird-translations-other-91.4.1-8.48.1 SUSE Linux Enterprise Module for Open Buildservice Development Tools 15 SP5:MozillaThunderbird-translations-common-91.4.1-8.48.1 SUSE Linux Enterprise Module for Open Buildservice Development Tools 15 SP5:MozillaThunderbird-translations-other-91.4.1-8.48.1 SUSE Linux Enterprise Module for Open Buildservice Development Tools 15 SP6:MozillaThunderbird-translations-common-91.4.1-8.48.1 SUSE Linux Enterprise Module for Open Buildservice Development Tools 15 SP6:MozillaThunderbird-translations-other-91.4.1-8.48.1 SUSE Linux Enterprise Module for Open Buildservice Development Tools 15 SP7:MozillaThunderbird-translations-common-91.4.1-8.48.1 SUSE Linux Enterprise Module for Open Buildservice Development Tools 15 SP7:MozillaThunderbird-translations-other-91.4.1-8.48.1 SUSE Linux Enterprise Module for Package Hub 15 SP4:MozillaThunderbird-91.4.1-8.48.1 SUSE Linux Enterprise Module for Package Hub 15 SP4:MozillaThunderbird-translations-common-91.4.1-8.48.1 SUSE Linux Enterprise Module for Package Hub 15 SP4:MozillaThunderbird-translations-other-91.4.1-8.48.1 SUSE Linux Enterprise Module for Package Hub 15 SP5:MozillaThunderbird-91.4.1-8.48.1 SUSE Linux Enterprise Module for Package Hub 15 SP5:MozillaThunderbird-translations-common-91.4.1-8.48.1 SUSE Linux Enterprise Module for Package Hub 15 SP5:MozillaThunderbird-translations-other-91.4.1-8.48.1 SUSE Linux Enterprise Module for Package Hub 15 SP6:MozillaThunderbird-91.4.1-8.48.1 SUSE Linux Enterprise Module for Package Hub 15 SP6:MozillaThunderbird-translations-common-91.4.1-8.48.1 SUSE Linux Enterprise Module for Package Hub 15 SP6:MozillaThunderbird-translations-other-91.4.1-8.48.1 SUSE Linux Enterprise Module for Package Hub 15 SP7:MozillaThunderbird-91.4.1-8.48.1 SUSE Linux Enterprise Module for Package Hub 15 SP7:MozillaThunderbird-translations-common-91.4.1-8.48.1 SUSE Linux Enterprise Module for Package Hub 15 SP7:MozillaThunderbird-translations-other-91.4.1-8.48.1 SUSE Linux Enterprise Workstation Extension 15 SP3:MozillaThunderbird-91.4.1-8.48.1 SUSE Linux Enterprise Workstation Extension 15 SP3:MozillaThunderbird-translations-common-91.4.1-8.48.1 SUSE Linux Enterprise Workstation Extension 15 SP3:MozillaThunderbird-translations-other-91.4.1-8.48.1 SUSE Linux Enterprise Workstation Extension 15 SP4:MozillaThunderbird-91.4.1-8.48.1 SUSE Linux Enterprise Workstation Extension 15 SP4:MozillaThunderbird-translations-common-91.4.1-8.48.1 SUSE Linux Enterprise Workstation Extension 15 SP4:MozillaThunderbird-translations-other-91.4.1-8.48.1 SUSE Linux Enterprise Workstation Extension 15 SP5:MozillaThunderbird-91.4.1-8.48.1 SUSE Linux Enterprise Workstation Extension 15 SP5:MozillaThunderbird-translations-common-91.4.1-8.48.1 SUSE Linux Enterprise Workstation Extension 15 SP5:MozillaThunderbird-translations-other-91.4.1-8.48.1 SUSE Linux Enterprise Workstation Extension 15 SP6:MozillaThunderbird-91.4.1-8.48.1 SUSE Linux Enterprise Workstation Extension 15 SP6:MozillaThunderbird-translations-common-91.4.1-8.48.1 SUSE Linux Enterprise Workstation Extension 15 SP6:MozillaThunderbird-translations-other-91.4.1-8.48.1 SUSE Linux Enterprise Workstation Extension 15 SP7:MozillaThunderbird-91.4.1-8.48.1 SUSE Linux Enterprise Workstation Extension 15 SP7:MozillaThunderbird-translations-common-91.4.1-8.48.1 SUSE Linux Enterprise Workstation Extension 15 SP7:MozillaThunderbird-translations-other-91.4.1-8.48.1 openSUSE Leap 15.3:MozillaThunderbird-91.4.1-8.48.1 openSUSE Leap 15.3:MozillaThunderbird-translations-common-91.4.1-8.48.1 openSUSE Leap 15.3:MozillaThunderbird-translations-other-91.4.1-8.48.1 openSUSE Leap 15.4:MozillaThunderbird-91.8.0-150200.8.65.1 openSUSE Leap 15.4:MozillaThunderbird-translations-common-91.8.0-150200.8.65.1 openSUSE Leap 15.4:MozillaThunderbird-translations-other-91.8.0-150200.8.65.1 openSUSE Tumbleweed:MozillaThunderbird-91.4.1-1.1 openSUSE Tumbleweed:MozillaThunderbird-translations-common-91.4.1-1.1 openSUSE Tumbleweed:MozillaThunderbird-translations-other-91.4.1-1.1 important 7.5 AV:N/AC:L/Au:N/C:P/I:P/A:P 8.1 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H