SB20260619128 - Out-of-bounds read in Vim

Description

This security bulletin contains information about 1 vulnerability.

1) Out-of-bounds read (CVE-ID: N/A)

CWE-ID: CWE-125 - Out-of-bounds read

CVSSv4: CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green

The vulnerability allows a remote attacker to cause a denial of service.

The vulnerability exists due to out-of-bounds read in crypt_sodium_buffer_decode() when parsing a crafted libsodium-encrypted file. A remote attacker can trick the victim into opening a crafted file and entering a key to cause a denial of service.

Only instances built with the +sodium feature are vulnerable, and the issue affects files using the VimCrypt~04! or VimCrypt~05! encryption method.

Remediation

Install update from vendor's website.

References

• https://github.com/vim/vim/security/advisories/GHSA-c4j9-wr9j-4486
• https://github.com/vim/vim/commit/c8777cec25dcfae89c42e9aff51af61f71c5745f