Expat (aka libexpat) before 2.4.4 has an integer overflow in the doProlog function.
Fix
Public exploits 1
- Satheesh575555/external_expat_AOSP10_r33_CVE-2022-23990 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 4
- https://cert-portal.siemens.com/productcert/pdf/ssa-484086.pdf Patch, Third Party Advisory
- https://github.com/libexpat/libexpat/pull/551 Issue Tracking, Patch, Third Party Advisory
- https://cert-portal.siemens.com/productcert/pdf/ssa-484086.pdf Patch, Third Party Advisory
- https://github.com/libexpat/libexpat/pull/551 Issue Tracking, 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 7.5 · libexpat_project, tenable, oracleNVD modified 2026-10-14 16:17
Affected (CPE criteria) 8
cpe:2.3:a:libexpat_project:libexpat:*:*:*:*:*:*:*:*cpe:2.3:a:tenable:nessus:*:*:*:*:*:*:*:*cpe:2.3:a:oracle:communications_metasolv_solution:6.3.1:*:*:*:*:*:*:*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:siemens:sinema_remote_connect_server:*:*:*:*:*:*:*:*
References 18
- https://cert-portal.siemens.com/productcert/pdf/ssa-484086.pdf Patch, Third Party Advisory
- https://github.com/libexpat/libexpat/pull/551 Issue Tracking, Patch, Third Party Advisory
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/34NXVL2RZC2YZRV74ZQ3RNFB7WCEUP7D/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/R7FF2UH7MPXKTADYSJUAHI2Y5UHBSHUH/
- https://security.gentoo.org/glsa/202209-24 Third Party Advisory
- https://www.debian.org/security/2022/dsa-5073 Mailing List, Third Party Advisory
- https://www.oracle.com/security-alerts/cpuapr2022.html Third Party Advisory
- https://www.tenable.com/security/tns-2022-05 Third Party Advisory
- https://cert-portal.siemens.com/productcert/pdf/ssa-484086.pdf Patch, Third Party Advisory
- https://github.com/libexpat/libexpat/pull/551 Issue Tracking, Patch, Third Party Advisory
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/34NXVL2RZC2YZRV74ZQ3RNFB7WCEUP7D/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/R7FF2UH7MPXKTADYSJUAHI2Y5UHBSHUH/
- https://security.gentoo.org/glsa/202209-24 Third Party Advisory
- https://www.debian.org/security/2022/dsa-5073 Mailing List, Third Party Advisory
- https://www.oracle.com/security-alerts/cpuapr2022.html Third Party Advisory
- https://www.tenable.com/security/tns-2022-05 Third Party Advisory
- https://cert-portal.siemens.com/productcert/html/ssa-398330.html
- https://cert-portal.siemens.com/productcert/html/ssa-484086.html