CVE-2023-29469 | BDVDB-2026-200875 Detail
SiemensSIMATIC S7-1500 CPU 1518-4 PN/DP MFP
Description#
An issue was discovered in libxml2 before 2.10.4. When hashing empty dict strings in a crafted XML document, xmlDictComputeFastKey in dict.c can produce non-deterministic values, leading to various logic and memory errors, such as a double free. This behavior occurs because there is an attempt to use the first byte of an empty string, and any value is possible (not solely the '\0' value).
Impact#
Per CVSS v3.1: confidentiality impact none, integrity impact none, availability impact high. Attack vector: network.
Weaknesses#
- CWE-415 Double Free
References#
- https://gitlab.gnome.org/GNOME/libxml2/-/issues/510
- https://gitlab.gnome.org/GNOME/libxml2/-/releases/v2.10.4
- https://lists.debian.org/debian-lts-announce/2023/04/msg00031.html
- https://security.netapp.com/advisory/ntap-20230601-0006/
- https://cert-portal.siemens.com/productcert/html/ssa-398330.html
- https://cert-portal.siemens.com/productcert/html/ssa-556635.html
- https://cert-portal.siemens.com/productcert/html/ssa-625862.html
- https://cert-portal.siemens.com/productcert/html/ssa-341067.html
- https://cert-portal.siemens.com/productcert/html/ssa-769027.html
Exploit#
No public exploit known
History#
- Version 1Record published in the CVE List.
- Version 2Most recent update recorded in the CVE List.