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
2021-12-14
Added
2024-08-22
Modified
2024-10-02

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
NEW

Explore Exposure Command

Confidently identify and prioritize exposures from endpoint to cloud with full attack surface visibility and threat-aware risk context.