CVE-2023-48706: Vim has heap-use-after-free at /src/charset.c:1770:12 in skipwhite
First published: Wed Nov 22 2023(Updated: )
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.
Credit: security-advisories@github.com security-advisories@github.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Vim Vim | <9.0.2121 | |
| debian/vim | <=2:8.1.0875-5+deb10u2<=2:8.1.0875-5+deb10u6<=2:8.2.2434-3+deb11u1<=2:9.0.1378-2 | 2:9.1.0016-1 2:9.1.0377-1 |
| ubuntu/vim | <2:8.2.3995-1ubuntu2.15 | 2:8.2.3995-1ubuntu2.15 |
| ubuntu/vim | <2:9.0.1000-4ubuntu3.3 | 2:9.0.1000-4ubuntu3.3 |
| ubuntu/vim | <2:9.0.1672-1ubuntu2.2 | 2:9.0.1672-1ubuntu2.2 |
| ubuntu/vim | <2:9.0.2116-1ubuntu2 | 2:9.0.2116-1ubuntu2 |
| ubuntu/vim | <9.0.2121 | 9.0.2121 |
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Reference Links
- 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/
- https://launchpad.net/bugs/cve/CVE-2023-48706
- https://github.com/vim/vim/commit/26c11c56888d01e298cd8044caf8
- https://security-tracker.debian.org/tracker/CVE-2023-48706
- https://ubuntu.com/security/notices/USN-6557-1
- https://www.cve.org/CVERecord?id=CVE-2023-48706
- https://nvd.nist.gov/vuln/detail/CVE-2023-48706
- https://ubuntu.com/security/CVE-2023-48706
Frequently Asked Questions
What is the vulnerability ID for this Vim vulnerability?
The vulnerability ID for this Vim vulnerability is CVE-2023-48706.
What is the severity rating of CVE-2023-48706?
The severity rating of CVE-2023-48706 is medium.
What is the affected software for CVE-2023-48706?
The affected software for CVE-2023-48706 is Vim version up to exclusive 9.0.2121.
What is the CWE ID for CVE-2023-48706?
The CWE ID for CVE-2023-48706 is CWE-416.
How do I fix CVE-2023-48706?
To fix CVE-2023-48706, upgrade Vim to version 9.0.2121 or higher.
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