Bug 2054278 (CVE-2022-0572)

Summary:	CVE-2022-0572 vim: heap overflow in ex_retab() may lead to crash
Product:	[Other] Security Response	Reporter:	Marian Rehak <mrehak>
Component:	vulnerability	Assignee:	Nobody <nobody>
Status:	NEW ---	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	unspecified	CC:	bdettelb, caswilli, fhrdina, fjansen, gchamoul, jburrell, jwong, karsten, kaycoth, micjohns, sthirugn, vkrizan, vkumar, vmugicag, zdohnal
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:	vim 8.2.4359	Doc Type:	If docs needed, set a value
Doc Text:	A heap-based buffer overflow flaw was found in vim's ex_retab() function of indent.c file. This flaw occurs when repeatedly using ":retab." This flaw allows an attacker to trick a user into opening a crafted file triggering a heap-overflow.	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:	2054279, 2054600
Bug Blocks:	2054281, 2054282

Description Marian Rehak 2022-02-14 15:12:04 UTC

Heap overflow occurs in ex_retab().

Reference:

https://huntr.dev/bounties/bf3e0643-03e9-4436-a1c8-74e7111c32bf
https://github.com/vim/vim/commit/6e28703a8e41f775f64e442c5d11ce1ff599aa3f

Comment 1 Marian Rehak 2022-02-14 15:13:27 UTC

Created vim tracking bugs for this issue:

Affects: fedora-all [bug 2054279]

Comment 2 juneau 2022-02-14 16:37:04 UTC

Marking services affected/wontereport/low as this is yet another in a long line of vim issues that are very unlikely to affect services, and remediation for vim is already in play.