Bug 2021292 (CVE-2021-3928)

Summary:	CVE-2021-3928 vim: stack-based buffer overflow in spell_iswordp() in spell.c
Product:	[Other] Security Response	Reporter:	Guilherme de Almeida Suckevicz <gsuckevi>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED WONTFIX	QA Contact:
Severity:	low	Docs Contact:
Priority:	low
Version:	unspecified	CC:	bdettelb, caswilli, fjansen, gchamoul, gghezzo, gparvin, jburrell, jnakfour, jramanat, jwong, karsten, kaycoth, pahickey, psegedy, stcannon, vkumar, vmugicag, zdohnal
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:	vim 8.2.3582	Doc Type:	If docs needed, set a value
Doc Text:	A flaw was found in vim. A possible stack-based buffer overflow could allow an attacker to input a specially crafted file leading to a crash or code execution. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.	Story Points:	---
Clone Of:		Environment:
Last Closed:	2021-11-10 11:23:41 UTC	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:	2021293, 2021426
Bug Blocks:	2021294

Description Guilherme de Almeida Suckevicz 2021-11-08 18:16:59 UTC

vim is vulnerable to stack-based buffer overflow.

Reference:
https://huntr.dev/bounties/29c3ebd2-d601-481c-bf96-76975369d0cd

Upstream patch:
https://github.com/vim/vim/commit/15d9890eee53afc61eb0a03b878a19cb5672f732

Comment 1 Guilherme de Almeida Suckevicz 2021-11-08 18:17:16 UTC

Created vim tracking bugs for this issue:

Affects: fedora-all [bug 2021293]