PT-2022-1365 · Expat+12 · Expat+12
Published
2022-01-23
·
Updated
2026-04-01
·
CVE-2022-23852
CVSS v2.0
10
Critical
| Vector | AV:N/AC:L/Au:N/C:C/I:C/A:C |
Name of the Vulnerable Software and Affected Versions
Expat (aka libexpat) versions prior to 2.4.4
Description
The issue is related to a signed integer overflow in XML GetBuffer, which can be exploited by sending specially crafted data, potentially allowing a remote attacker to execute arbitrary code. This could lead to local escalation of privilege with no additional execution privileges needed, and user interaction is not required for exploitation.
Recommendations
For versions prior to 2.4.4, update to version 2.4.4 or later to resolve the issue. As a temporary workaround, consider disabling the
XML GetBuffer function until a patch is available. Restrict access to the xmlparse.c module to minimize the risk of exploitation. Avoid using configurations with a nonzero XML CONTEXT BYTES until the issue is resolved.Fix
DoS
Integer Overflow
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Weakness Enumeration
Related Identifiers
Affected Products
Alt Linux
Almalinux
Astra Linux
Centos
Debian
Expat
Ibm Aix
Linuxmint
Red Hat
Red Os
Rocky Linux
Suse
Ubuntu