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Alpine: element-web: security update to 1.9.7-r0

critical Tenable Cloud Security Plugin ID 404219

Description

There are packages installed that are affected by a vulnerability referenced in the following CVE:

 - 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)

See Also

https://security.alpinelinux.org/vuln/CVE-2021-44538

Plugin Details

Severity: Critical

ID: 404219

Version: Revision 1.28

Type: Local

Published: 10/31/2023

Updated: 7/2/2026

Supported Sensors: Agentless Assessment, Tenable Cloud Security, Tenable Self-Hosted Container Security

Risk Information

VPR

Risk Factor: Medium

Score: 4.9

Percentile: 57.12

CVSS v2

Risk Factor: High

Base Score: 7.5

Temporal Score: 5.5

Vector: CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P

CVSS Score Source: CVE-2021-44538

CVSS v3

Risk Factor: Critical

Base Score: 9.8

Temporal Score: 8.5

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

Vulnerability Information

Exploit Ease: No known exploits are available

Vulnerability Publication Date: 12/14/2021

Reference Information

CVE: CVE-2021-44538