CVE-2023-48706
Vim has heap-use-after-free at /src/charset.c:1770:12 in skipwhite
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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.
Affected
Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.
Remediation
No guide yetNo remediation guidance has been written for this CVE yet. What the record does show:
Patch and advisory references
- http://www.openwall.com/lists/oss-security/2023/11/22/3
- https://github.com/vim/vim/commit/26c11c56888d01e298cd8044caf860f3c26f57bb
- https://github.com/vim/vim/pull/13552
- https://github.com/vim/vim/security/advisories/GHSA-c8qm-x72m-q53q
- https://lists.fedoraproject.org/archives/list/[email protected]/message/DNMFS3IH74KEMMESOA3EOB6MZ56TWGFF/
References (8)
SSVC — Action Prioritization
SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.
CVSS
- Attack Vector
- LOCAL
- Complexity
- HIGH
- Privileges
- NONE
- User Interaction
- REQUIRED
- Scope
- UNCHANGED
- Confidentiality
- NONE
- Integrity
- NONE
- Availability
- HIGH
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