CVE-2018-9251

libxml2: infinite loop in xz_decomp function in xzlib.c

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Severity

Low

Red Hat Product Security

3.5

CVSS 3.0

Review impact separately from score.

Published · April 3, 2018

Updated · November 2, 2026

Description

The xz_decomp function in xzlib.c in libxml2 2.9.8, if --with-lzma is used, allows remote attackers to cause a denial of service (infinite loop) via a crafted XML file that triggers LZMA_MEMLIMIT_ERROR, as demonstrated by xmllint, a different vulnerability than CVE-2015-8035.

Statement

This issue did not affect the versions of libxml2 as shipped with Red Hat Enterprise Linux 5, 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 · 3.5
CVSS:3.0/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:N/A:L

CWE-835 · Loop with Unreachable Exit Condition