Bug 2028212 (CVE-2021-4019)

Summary:	CVE-2021-4019 vim: heap-based buffer overflow in find_help_tags() in help.c
Product:	[Other] Security Response	Reporter:	Guilherme de Almeida Suckevicz <gsuckevi>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED ERRATA	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
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 8.2.3669	Doc Type:	If docs needed, set a value
Doc Text:	A flaw was found in vim. A possible heap-based buffer overflow vulnerability allows an attacker to input a specially crafted file, leading to a crash or code execution. The highest threat from this vulnerability is system availability.	Story Points:	---
Clone Of:		Environment:
Last Closed:	2022-02-01 22:01:53 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:	2028213, 2028429, 2028430, 2028431, 2029171, 2029172
Bug Blocks:	2028214

Description Guilherme de Almeida Suckevicz 2021-12-01 17:55:06 UTC

Vim is vulnerable to heap-based buffer overflow.

Reference:
https://huntr.dev/bounties/d8798584-a6c9-4619-b18f-001b9a6fca92

Upstream patch:
https://github.com/vim/vim/commit/bd228fd097b41a798f90944b5d1245eddd484142

Comment 1 Guilherme de Almeida Suckevicz 2021-12-01 17:55:21 UTC

Created vim tracking bugs for this issue:

Affects: fedora-all [bug 2028213]

Comment 5 errata-xmlrpc 2022-02-01 21:00:58 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2022:0366 https://access.redhat.com/errata/RHSA-2022:0366

Comment 6 Product Security DevOps Team 2022-02-01 22:01:51 UTC

This bug is now closed. Further updates for individual products will be reflected on the CVE page(s):

https://access.redhat.com/security/cve/cve-2021-4019