Bug 2085393 (CVE-2022-1674)

Summary:	CVE-2022-1674 vim: NULL pointer dereference in vim_regexec_string() of regexp.c
Product:	[Other] Security Response	Reporter:	TEJ RATHI <trathi>
Component:	vulnerability	Assignee:	Nobody <nobody>
Status:	NEW ---	QA Contact:
Severity:	low	Docs Contact:
Priority:	low
Version:	unspecified	CC:	fhrdina, gchamoul, karsten, michal.skrivanek, mperina, zdohnal
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:	vim 8.2.4938	Doc Type:	If docs needed, set a value
Doc Text:	A NULL pointer dereference flaw was found in vim's vim_regexec_string() function in regexp.c file. The issue occurs when the function tries to match the buffer with an invalid pattern. This flaw allows an attacker to trick a user into opening a specially crafted file, triggering a NULL pointer dereference that causes an application to crash, leading to a denial of service.	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:	2087006, 2087008
Bug Blocks:	2085396

Description TEJ RATHI 2022-05-13 08:58:43 UTC

NULL Pointer Dereference in function vim_regexec_string at regexp.c in vim/vim prior to 8.2.4938. NULL Pointer Dereference in function vim_regexec_string() at regexp.c allows attackers to cause a denial of service (application crash) via a crafted input.

https://huntr.dev/bounties/a74ba4a4-7a39-4a22-bde3-d2f8ee07b385
https://github.com/vim/vim/commit/a59f2dfd0cf9ee1a584d3de5b7c2d47648e79060

Comment 1 TEJ RATHI 2022-05-17 06:09:24 UTC

Created vim tracking bugs for this issue:

Affects: fedora-all [bug 2087006]