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CVE-2018-1000879

libarchive: NULL pointer dereference in ACL parser resulting in a denial of service

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Severity

Low

Red Hat Product Security

4.3

CVSS 3.0

Review impact separately from score.

Published · November 20, 2018

Updated · October 9, 2026

Description

A vulnerability was found in libarchive, where a NULL pointer dereference in the archive_acl_from_text_l function in libarchive/archive_acl.c can lead to a denial of service, a remote attacker could exploit this flaw by persuading a victim to open a specially crafted file, causing the application to crash.

Statement

This vulnerability is rated as low severity because it results in a denial of service due to a NULL pointer dereference, it can crash the application, it does not affect system security or integrity.

This issue did not affect the versions of libarchive as shipped with Red Hat Enterprise Linux 6 and 7.

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

No mitigation is specified in collected source.

CVSS / CWE

CVSS 3.0 · 4.3
CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L

CWE-476 · NULL Pointer Dereference