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.
Fix
Public exploits 2
- ShaikUsaf/external_expact_AOSP10_r33_CVE-2022-25313 PoC on GitHub
- Trinadh465/external_expat-2.1.0_CVE-2022-25313 PoC on GitHub
Each line links to the index that lists it, never to exploit code. Exploit-DB's "verified" and a Metasploit rank of good or better count as verified; a PoC-in-GitHub entry is a repository's claim.
Patch, vendor advisory and mitigation references on NVD 2
- https://www.oracle.com/security-alerts/cpuapr2022.html Patch, Third Party Advisory
- https://www.oracle.com/security-alerts/cpuapr2022.html Patch, Third Party Advisory
Every line above is quoted from NVD, CISA, Microsoft, the vendor's own advisory or DISA; nothing is generated.
Change history 1
- First seenCVSS 6.5 · libexpat_project, debian, fedoraprojectNVD modified 2026-10-14 17:17
Affected (CPE criteria) 9
cpe:2.3:a:libexpat_project:libexpat:*:*:*:*:*:*:*:*cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:*cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:*cpe:2.3:o:fedoraproject:fedora:35:*:*:*:*:*:*:*cpe:2.3:a:oracle:http_server:12.2.1.3.0:*:*:*:*:*:*:*cpe:2.3:a:oracle:http_server:12.2.1.4.0:*:*:*:*:*:*:*cpe:2.3:a:oracle:zfs_storage_appliance_kit:8.8:*:*:*:*:*:*:*cpe:2.3:a:siemens:sinema_remote_connect_server:*:*:*:*:*:*:*:*
References 22
- http://www.openwall.com/lists/oss-security/2022/02/19/1 Mailing List, Third Party Advisory
- https://cert-portal.siemens.com/productcert/pdf/ssa-484086.pdf Third Party Advisory
- https://github.com/libexpat/libexpat/pull/558 Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2022/03/msg00007.html Third Party Advisory
- 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 Third Party Advisory
- https://security.netapp.com/advisory/ntap-20220303-0008/ Third Party Advisory
- https://www.debian.org/security/2022/dsa-5085 Third Party Advisory
- https://www.oracle.com/security-alerts/cpuapr2022.html Patch, Third Party Advisory
- http://www.openwall.com/lists/oss-security/2022/02/19/1 Mailing List, Third Party Advisory
- https://cert-portal.siemens.com/productcert/pdf/ssa-484086.pdf Third Party Advisory
- https://github.com/libexpat/libexpat/pull/558 Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2022/03/msg00007.html Third Party Advisory
- 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 Third Party Advisory
- https://security.netapp.com/advisory/ntap-20220303-0008/ Third Party Advisory
- https://www.debian.org/security/2022/dsa-5085 Third Party Advisory
- https://www.oracle.com/security-alerts/cpuapr2022.html Patch, Third Party Advisory
- https://cert-portal.siemens.com/productcert/html/ssa-398330.html
- https://cert-portal.siemens.com/productcert/html/ssa-484086.html