CVE-2022-29824 Information

Description

In libxml2 before 2.9.14 several buffer handling functions in buf.c (xmlBuf) and tree.c (xmlBuffer) don’t check for integer overflows. This can result in out-of-bounds memory writes. Exploitation requires a victim to open a crafted multi-gigabyte XML file. Other software using libxml2’s buffer functions for example libxslt through 1.1.35 is affected as well.

CVSS Vector

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

Reference

https://gitlab.gnome.org/GNOME/libxml2/-/tags/v2.9.14 https://gitlab.gnome.org/GNOME/libxml2/-/commit/6c283d83eccd940bcde15634ac8c7f100e3caefd https://gitlab.gnome.org/GNOME/libxslt/-/tags https://gitlab.gnome.org/GNOME/libxml2/-/commit/2554a2408e09f13652049e5ffb0d26196b02ebab https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/FZOBT5Y6Y2QLDDX2HZGMV7MJMWGXORKK/ https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/P5363EDV5VHZ5C77ODA43RYDCPMA7ARM/ https://lists.debian.org/debian-lts-announce/2022/05/msg00023.html https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/P3NVZVWFRBXBI3AKZZWUWY6INQQPQVSF/ https://www.debian.org/security/2022/dsa-5142 http://packetstormsecurity.com/files/167345/libxml2-xmlBufAdd-Heap-Buffer-Overflow.html

Attack Complexity

LOW

Privileges Required

NONE

User Interaction Required

NONE

Scope

REQUIRED

Confidentiality Impact

UNCHANGED

Integrity Impact

NONE

Availability Impact

NONE

Base Score

HIGH

Base Severity

6.5