Bug 2044954 (CVE-2022-0128)

Summary:	CVE-2022-0128 vim: a heap-based OOB read of size 1
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, 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:		Doc Type:	If docs needed, set a value
Doc Text:	A heap-based out-of-bounds read flaw was found in vim. This issue allows an attacker to input a specially crafted file causing an application to crash, leading to a denial of service and possibly disclosing a small amount of memory.	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:	2044956, 2045153
Bug Blocks:	2044609

Description Marian Rehak 2022-01-25 11:34:08 UTC

A heap-based OOB read of size 1 occurs when a user tries to open a vim session file specified below. This happens regardless of any command line options that could be specified to restrict vim, such -Z and -m.

Reference:

https://huntr.dev/bounties/63f51299-008a-4112-b85b-1e904aadd4ba/
https://github.com/vim/vim/commit/d3a117814d6acbf0dca3eff1a7626843b9b3734a

Comment 1 Marian Rehak 2022-01-25 11:40:05 UTC

Created vim tracking bugs for this issue:

Affects: fedora-all [bug 2044956]

Comment 3 juneau 2022-01-25 15:57:23 UTC

Marked services affected/delegated. Affected code is present, however impact is moderate and actual occurrence of flaw is unlikely.