PT-2015-3253 · Xmlsoft+5 · Libxml2+5

Adam Mariš · Published 2015-11-20 · Updated 2026-03-13 · CVE-2015-7497

Positive Technologies (AI Summary)

CVSS v2.0

5.0

Medium

Base vector

AV:N/AC:L/Au:N/C:N/I:N/A:P

Name of the Vulnerable Software and Affected Versions libxml2 versions prior to 2.9.3

Description The issue is related to a heap-based buffer overflow in the xmlDictComputeFastQKey function in dict.c in libxml2. This allows context-dependent attackers to cause a denial of service via unspecified vectors. The vulnerability can be exploited by a remote attacker to achieve a denial of service.

Recommendations For versions prior to 2.9.3, update to version 2.9.3 or later to resolve the issue. As a temporary workaround, consider restricting access to the xmlDictComputeFastQKey function until a patch is available.

Fix

DoS

Buffer Overflow

Weakness Enumeration

CWE-119

Related Identifiers

ALT-PU-2015-2016

BDU:2016-01642

CESA-2015_2549

CESA-2015_2550

CVE-2015-7497

DLA-373-1

DSA-3430-1

MGASA-2015-0457

OPENSUSE-SU-2024:10192-1

OPENSUSE-SU-2024:10549-1

OPENSUSE-SU-2024:11340-1

OPENSUSE-SU-2024:11912-1

OPENSUSE-SU-2024:13165-1

OPENSUSE-SU-2024:14174-1

OPENSUSE-SU-2025:14697-1

OPENSUSE-SU-2026:10356-1

RHSA-2015:2549

RHSA-2015:2550

RHSA-2015_2549

RHSA-2015_2550

SUSE-SU-2016:0030-1

SUSE-SU-2016:0049-1

SUSE-SU-2016:0786-1

USN-2834-1

Affected Products

Alt Linux

Centos

Red Hat

Suse

Ubuntu

Libxml2

References · 131

• https://ubuntu.com/security/CVE-2015-7500 · Vendor Advisory
• http://xmlsoft.org/news.html · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2015-7497 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2015-7497 · Security Note
• https://osv.dev/vulnerability/openSUSE-SU-2024:14174-1 · Vendor Advisory
• https://osv.dev/vulnerability/openSUSE-SU-2025:14697-1 · Vendor Advisory
• https://advisories.mageia.org/MGASA-2015-0457.html · Security Note
• http://lists.opensuse.org/opensuse-updates/2016-01/msg00031.html · Vendor Advisory
• https://security.gentoo.org/glsa/201701-37 · Vendor Advisory
• https://osv.dev/vulnerability/DEBIAN-CVE-2015-7497 · Vendor Advisory
• https://osv.dev/vulnerability/MGASA-2015-0457 · Vendor Advisory
• https://ubuntu.com/security/CVE-2015-5312 · Vendor Advisory
• https://osv.dev/vulnerability/DSA-3430-1 · Vendor Advisory
• https://ubuntu.com/security/notices/USN-2834-1 · Vendor Advisory
• http://debian.org/security/2015/dsa-3430 · Vendor Advisory