What’s Vulnerable › Vulnerabilities

CVE-2022-25313

• Severity: medium (CVSS 6.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 3.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2022-02-18 · updated 2026-10-14
• Weakness: CWE-674

Description

In Expat (aka libexpat) before 2.4.5, an attacker can trigger stack exhaustion in build_model via a large nesting depth in the DTD element.

Affected products

• Debian Linux: 10.0, 11.0
• Fedoraproject Fedora: 34, 35
• libexpat project libexpat: before 2.4.5 — fixed in 2.4.5
• Oracle Corporation Oracle HTTP Server: 12.2.1.3.0, 12.2.1.4.0
• Oracle Corporation Oracle ZFS Storage Appliance Kit: 8.8
• Siemens SINEMA Remote Connect Server: before 3.1 — fixed in 3.1

How to fix

Upgrade to a fixed version: libexpat project libexpat 2.4.5; Siemens SINEMA Remote Connect Server 3.1. Check the vendor advisory for mitigations.

References

• http://www.openwall.com/lists/oss-security/2022/02/19/1
• https://cert-portal.siemens.com/productcert/pdf/ssa-484086.pdf
• https://github.com/libexpat/libexpat/pull/558
• https://lists.debian.org/debian-lts-announce/2022/03/msg00007.html
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/3UFRBA3UQVIQKXTBUQXDWQOVWNBKLERU/
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/Y27XO3JMKAOMQZVPS3B4MJGEAHCZF5OM/
• https://security.gentoo.org/glsa/202209-24
• https://security.netapp.com/advisory/ntap-20220303-0008/
• https://www.debian.org/security/2022/dsa-5085
• https://www.oracle.com/security-alerts/cpuapr2022.html
• http://www.openwall.com/lists/oss-security/2022/02/19/1
• https://cert-portal.siemens.com/productcert/pdf/ssa-484086.pdf

Get alerted when CVE-2022-25313 or the next vulnerability affects your stack