CVE-2023-39804

tar: Incorrectly handled extension attributes in PAX archives can lead to a crash

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Severity

Low

Red Hat Product Security

3.3

CVSS 3.1

Review impact separately from score.

Published · December 11, 2023

Updated · September 23, 2026

Description

A flaw was found in tar. This issue occurs when extended attributes are processed in PAX archives, and could allow an attacker to cause an application crash, resulting in a denial of service.

Statement

To exploit this flaw, an attacker needs to trick a user into processing a malicious archive, causing only an application crash. For these reasons, this flaw was rated with a low, and not moderate, severity.

CVSS score applicability

The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.

Mitigation

Do not process untrusted tar archives.

CVSS / CWE

CVSS 3.1 · 3.3
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L

CWE-121 · Stack-based Buffer Overflow