Bug 2176413 (CVE-2023-1264)

Summary:	CVE-2023-1264 vim: NULL pointer dereference issue in utfc_ptr2len
Product:	[Other] Security Response	Reporter:	Mauro Matteo Cascella <mcascell>
Component:	vulnerability	Assignee:	Nobody <nobody>
Status:	NEW ---	QA Contact:
Severity:	low	Docs Contact:
Priority:	low
Version:	unspecified	CC:	zdohnal
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:	vim 9.0.1392	Doc Type:	If docs needed, set a value
Doc Text:	A NULL pointer dereference vulnerability was discovered in vim's utfc_ptr2len() function in the mbyte.c file. This issue is due to using a NULL pointer with the nested :open command. This flaw allows an attacker to trick a user into opening a specially crafted file, triggering an issue that causes an application to crash, leading to a denial of service.	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:	2177970, 2179905, 2179906
Bug Blocks:	2176414

Description Mauro Matteo Cascella 2023-03-08 10:48:23 UTC

A NULL pointer dereference issue was found in utfc_ptr2len in vim prior to 9.0.1392.

Security Advisory:
https://huntr.dev/bounties/b2989095-88f3-413a-9a39-c1c58a6e6815

Upstream fix:
https://github.com/vim/vim/commit/7ac5023a5f1a37baafbe1043645f97ba3443d9f6

Comment 1 TEJ RATHI 2023-03-14 05:32:33 UTC

Created vim tracking bugs for this issue:

Affects: fedora-all [bug 2177970]