Vulnerability · Published Nov 22, 2023 · Assigned by GitHub_M
CVE-2023-48706Vim has heap-use-after-free at /src/charset.c:1770:12 in skipwhite
Low 3.6
In plain English
A low-severity use-after-free in vim from vim. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.5% (higher than 46% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Official 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 packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine:v3.20 | vim | 9.0.2127-r0 | ALPINE-CVE-2023-48706 |
| Alpine:v3.21 | vim | 9.0.2127-r0 | ALPINE-CVE-2023-48706 |
| Alpine:v3.22 | vim | 9.0.2127-r0 | ALPINE-CVE-2023-48706 |
| Alpine:v3.23 | vim | 9.0.2127-r0 | ALPINE-CVE-2023-48706 |
| Alpine:v3.24 | vim | 9.0.2127-r0 | ALPINE-CVE-2023-48706 |
| Debian:12 | vim | no fix listed | DEBIAN-CVE-2023-48706 |
| Debian:13 | vim | 2:9.0.2189-1 | DEBIAN-CVE-2023-48706 |
| Debian:14 | vim | 2:9.0.2189-1 | DEBIAN-CVE-2023-48706 |
| Ubuntu:22.04:LTS | vim | 2:8.2.3995-1ubuntu2.15 | USN-6557-1 |
| Ubuntu:22.04:LTS | vim | 2:8.2.3995-1ubuntu2.15 | UBUNTU-CVE-2023-48706 |
| Ubuntu:24.04:LTS | vim | 2:9.0.2116-1ubuntu2 | UBUNTU-CVE-2023-48706 |
Affected products (as reported)
Weakness: CWE-416 · Vector: CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:N/I:L/A:L
References
- https://github.com/vim/vim/security/advisories/GHSA-c8qm-x72m-q53q x_refsource_CONFIRM
- https://github.com/vim/vim/pull/13552 x_refsource_MISC
- https://github.com/vim/vim/commit/26c11c56888d01e298cd8044caf860f3c26f57bb x_refsource_MISC
- https://github.com/gandalf4a/crash_report/blob/main/vim/vim_huaf x_refsource_MISC
- 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/