CVE-2023-48706

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.

• How can I get the fixes?
• What do statuses mean?
• Patch details

References

• MITRE
• NVD
• Launchpad
• Debian

Related Ubuntu Security Notices (USN)

• USN-6557-1
• Vim vulnerabilities
• 14 December 2023

Other references

• https://github.com/vim/vim/security/advisories/GHSA-c8qm-x72m-q53q
• https://github.com/vim/vim/pull/13552
• https://github.com/gandalf4a/crash_report/blob/main/vim/vim_huaf
• http://www.openwall.com/lists/oss-security/2023/11/22/3
• https://www.cve.org/CVERecord?id=CVE-2023-48706