Bug 2246953 (CVE-2023-46246)

Summary:	CVE-2023-46246 vim: Integer Overflow in :history command
Product:	[Other] Security Response	Reporter:	Avinash Hanwate <ahanwate>
Component:	vulnerability	Assignee:	Product Security <prodsec-ir-bot>
Status:	NEW ---	QA Contact:
Severity:	low	Docs Contact:
Priority:	low
Version:	unspecified	CC:	trathi
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	If docs needed, set a value
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:		Type:	---
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:
Bug Depends On:	2254025
Bug Blocks:	2246544, 2246954

Description Avinash Hanwate 2023-10-30 09:01:54 UTC

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.


https://github.com/vim/vim/security/advisories/GHSA-q22m-h7m2-9mgm
https://github.com/vim/vim/commit/9198c1f2b1ddecde22af918541e0de2a32f0f45a

Comment 2 Marian Rehak 2023-12-11 15:35:25 UTC

*** Bug 2246543 has been marked as a duplicate of this bug. ***

Comment 3 Marian Rehak 2023-12-11 15:49:33 UTC

Created vim tracking bugs for this issue:

Affects: fedora-all [bug 2254025]