CVE-2017-18258

libxml2: Unrestricted memory usage in xz_head() function in xzlib.c

Loading…

Severity

Low

Red Hat Product Security

3.5

CVSS 3.0

Review impact separately from score.

Published · September 7, 2017

Updated · September 21, 2026

Description

The xz_head function in xzlib.c in libxml2 before 2.9.6 allows remote attackers to cause a denial of service (memory consumption) via a crafted LZMA file, because the decoder functionality does not restrict memory usage to what is required for a legitimate file.

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 · 3.5
CVSS:3.0/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:N/A:L

CWE-400 · Uncontrolled Resource Consumption