CVE-2022-25235 Information

Description

xmltok_impl.c in Expat (aka libexpat) before 2.4.5 lacks certain validation of encoding such as checks for whether a UTF-8 character is valid in a certain context.

CVSS Vector

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

Reference

https://github.com/libexpat/libexpat/pull/562 http://www.openwall.com/lists/oss-security/2022/02/19/1 https://www.debian.org/security/2022/dsa-5085 https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/3UFRBA3UQVIQKXTBUQXDWQOVWNBKLERU/ https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/Y27XO3JMKAOMQZVPS3B4MJGEAHCZF5OM/ https://security.netapp.com/advisory/ntap-20220303-0008/ https://lists.debian.org/debian-lts-announce/2022/03/msg00007.html https://www.oracle.com/security-alerts/cpuapr2022.html

Attack Complexity

LOW

Privileges Required

NONE

User Interaction Required

NONE

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

HIGH

Availability Impact

HIGH

Base Score

HIGH

Base Severity

9.8