medium
5.5
CWE
190 416
Advisory Published
Updated

CVE-2023-46246: Integer Overflow in :history command in Vim

First published: Fri Oct 27 2023(Updated: )

Vim is an improved version of the good old UNIX editor Vi. Heap-use-after-free in memory allocated in the function `ga_grow_inner` in in the file `src/alloc.c` at line 748, which is freed in the file `src/ex_docmd.c` in the function `do_cmdline` at line 1010 and then used again in `src/cmdhist.c` at line 759. When using the `:history` command, it's possible that the provided argument overflows the accepted value. Causing an Integer Overflow and potentially later an use-after-free. This vulnerability has been patched in version 9.0.2068.

Credit: security-advisories@github.com security-advisories@github.com

Affected SoftwareAffected VersionHow to fix
Vim Vim<9.0.2068
ubuntu/vim<2:8.0.1453-1ubuntu1.13+
2:8.0.1453-1ubuntu1.13+
ubuntu/vim<2:8.1.2269-1ubuntu5.21
2:8.1.2269-1ubuntu5.21
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<2:7.4.052-1ubuntu3.1+
2:7.4.052-1ubuntu3.1+
ubuntu/vim<2:7.4.1689-3ubuntu1.5+
2:7.4.1689-3ubuntu1.5+
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

Remedy

https://github.com/vim/vim/commit/9198c1f2b1ddecde22af918541e0de2a32f0f45a

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Reference Links

Parent vulnerabilities

(Appears in the following advisories)

Frequently Asked Questions

  • What is CVE-2023-46246?

    CVE-2023-46246 is a vulnerability in Vim, a text editor, that allows for a heap-use-after-free vulnerability in the memory allocation process.

  • How severe is CVE-2023-46246?

    CVE-2023-46246 has a severity rating of medium with a severity value of 5.5.

  • Which software versions are affected by CVE-2023-46246?

    Vim versions up to and excluding 9.0.2068 are affected by CVE-2023-46246.

  • How can I fix CVE-2023-46246?

    To fix CVE-2023-46246, users should update to a version of Vim that is newer than 9.0.2068.

  • Where can I find more information about CVE-2023-46246?

    More information about CVE-2023-46246 can be found at the following references: [GitHub Commit](https://github.com/vim/vim/commit/9198c1f2b1ddecde22af918541e0de2a32f0f45a) and [GitHub Security Advisory](https://github.com/vim/vim/security/advisories/GHSA-q22m-h7m2-9mgm).

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