Bug 2004621 (CVE-2021-3778)

Summary:	CVE-2021-3778 vim: heap-based buffer overflow in utf_ptr2char() in mbyte.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:	caswilli, fjansen, gchamoul, gghezzo, gparvin, jnakfour, jramanat, jwong, karsten, kaycoth, pahickey, psegedy, saroy, stcannon, vkumar, vmugicag, zdohnal
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:	vim 8.2.3409	Doc Type:	If docs needed, set a value
Doc Text:	A flaw was found in vim. A possible heap-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:	2021-12-08 10:04:51 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:	2007112, 2004622, 2004890, 2004891, 2004892, 2004893, 2004895, 2004896, 2004897, 2004898, 2007111, 2007113, 2007114
Bug Blocks:	2004623

Description Guilherme de Almeida Suckevicz 2021-09-15 16:57:37 UTC

vim is vulnerable to Heap-based Buffer Overflow.

Reference:
https://huntr.dev/bounties/d9c17308-2c99-4f9f-a706-f7f72c24c273

Upstream patch:
https://github.com/vim/vim/commit/65b605665997fad54ef39a93199e305af2fe4d7f

Comment 25 errata-xmlrpc 2021-11-09 19:04:15 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2021:4517 https://access.redhat.com/errata/RHSA-2021:4517

Comment 26 Product Security DevOps Team 2021-12-08 10:04:49 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-2021-3778