vulnerability

Alpine Linux: CVE-2021-44538: Improper Restriction of Operations within the Bounds of a Memory Buffer

Severity
7
CVSS
(AV:N/AC:L/Au:N/C:P/I:P/A:P)
Published
Dec 14, 2021
Added
Aug 22, 2024
Modified
Oct 2, 2024

Description

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.

Solution(s)

alpine-linux-upgrade-riot-webalpine-linux-upgrade-olmalpine-linux-upgrade-thunderbirdalpine-linux-upgrade-element-web
Title
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