Bug 2046436 (CVE-2022-0351)

Summary:	CVE-2022-0351 vim: access of memory location before start of buffer
Product:	[Other] Security Response	Reporter:	Guilherme de Almeida Suckevicz <gsuckevi>
Component:	vulnerability	Assignee:	Nobody <nobody>
Status:	NEW ---	QA Contact:
Severity:	low	Docs Contact:
Priority:	low
Version:	unspecified	CC:	bdettelb, caswilli, fhrdina, fjansen, gchamoul, jburrell, jwong, karsten, kaycoth, micjohns, saroy, sthirugn, vkrizan, vkumar, vmugicag, zdohnal
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:	vim 8.2.4227	Doc Type:	If docs needed, set a value
Doc Text:	A flaw was found in vim. The vulnerability occurs due to too many recursions, which can lead to a segmentation fault. This flaw allows an attacker to input a specially crafted file, leading to a crash or code execution.	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:	2046437, 2046528, 2046604, 2046605
Bug Blocks:	2046438

Description Guilherme de Almeida Suckevicz 2022-01-26 16:52:33 UTC

Access of Memory Location Before Start of Buffer in Conda vim prior to 8.2.

Reference:
https://huntr.dev/bounties/8b36db58-b65c-4298-be7f-40b9e37fd161

Upstream patch:
https://github.com/vim/vim/commit/fe6fb267e6ee5c5da2f41889e4e0e0ac5bf4b89d

Comment 1 Guilherme de Almeida Suckevicz 2022-01-26 16:52:48 UTC

Created vim tracking bugs for this issue:

Affects: fedora-all [bug 2046437]

Comment 2 juneau 2022-01-26 21:29:12 UTC

Marking services affected/delegated for Yet Another Vim Flaw that is low/moderate in severity and unlikely to occur.

Comment 10 Sandipan Roy 2025-01-23 15:51:42 UTC

Red Hat Product Security has rated this issue as having a Low security impact, because the "victim" has to run an untrusted file IN SCRIPT MODE. Someone who is running untrusted files in script mode is equivalent to someone just taking a random python script and running it.

Since Red Hat Enterprise Linux 6, 7 are Out-of-Support-Scope for Low/Moderate flaws, the issue is not currently planned to be addressed in future updates for RHEL-6,7. Only Important and Critical severity flaws will be addressed at this time.

For additional information, refer to the Issue Severity Classification: https://access.redhat.com/security/updates/classification/ and Red Hat Enterprise Linux Life Cycle & Updates Policy: https://access.redhat.com/support/policy/updates/errata/.