Vim has heap-use-after-free at /src/charset.c:1770:12 in skipwhite
Vulnerability Description
Vim is a UNIX editor that, prior to version 9.0.2121, has a heap-use-after-free vulnerability. When executing a `:s` command for the very first time and using a sub-replace-special atom inside the substitution part, it is possible that the recursive `:s` call causes free-ing of memory which may later then be accessed by the initial `:s` command. The user must intentionally execute the payload and the whole process is a bit tricky to do since it seems to work only reliably for the very first :s command. It may also cause a crash of Vim. Version 9.0.2121 contains a fix for this issue.
Impact Analysis
Refer to official advisory for detailed impact metrics.
Remediation
Ensure systems are updated to the latest vendor-supplied patch levels.
Am I Vulnerable?
Launch our assessment wizard to check if your infrastructure is exposed to • CVE-2023-48706
Credits & Attribution
No credits recorded in the NVD database.
References
- https://github.com/vim/vim/security/advisories/GHSA-c8qm-x72m-q53q
- https://github.com/vim/vim/pull/13552
- https://github.com/vim/vim/commit/26c11c56888d01e298cd8044caf860f3c26f57bb
- https://github.com/gandalf4a/crash_report/blob/main/vim/vim_huaf
- http://www.openwall.com/lists/oss-security/2023/11/22/3
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/DNMFS3IH74KEMMESOA3EOB6MZ56TWGFF/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/IVA7K73WHQH4KVFDJQ7ELIUD2WK5ZT5E/
- https://security.netapp.com/advisory/ntap-20240105-0001/
