Vim is an open source, command line text editor. Prior to version 9.1.2132, a heap buffer overflow vulnerability exists in Vim's tag file resolution logic when processing the 'helpfile' option. The vu

Description

Vim is an open source, command line text editor. Prior to version 9.1.2132, a heap buffer overflow vulnerability exists in Vim's tag file resolution logic when processing the 'helpfile' option. The vulnerability is located in the get_tagfname() function in src/tag.c. When processing help file tags, Vim copies the user-controlled 'helpfile' option value into a fixed-size heap buffer of MAXPATHL + 1 bytes (typically 4097 bytes) using an unsafe STRCPY() operation without any bounds checking. This issue has been patched in version 9.1.2132.

Affected Products

Also Affects

Downstream vendors/products affected by this vulnerability

References

• https://github.com/vim/vim/commit/0714b15940b245108e6e9d7aa2260dd849a26fa9(Patch)
• https://github.com/vim/vim/releases/tag/v9.1.2132(Product)
• https://github.com/vim/vim/security/advisories/GHSA-5w93-4g67-mm43(Exploit, Patch, Vendor Advisory)

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