Bug 2237315 (CVE-2023-4733)

Summary:	CVE-2023-4733 vim: use-after-free in function buflist_altfpos
Product:	[Other] Security Response	Reporter:	Patrick Del Bello <pdelbell>
Component:	vulnerability	Assignee:	Product Security <prodsec-ir-bot>
Status:	NEW ---	QA Contact:
Severity:	low	Docs Contact:
Priority:	low
Version:	unspecified	Keywords:	Security
Target Milestone:	---
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:	vim 9.0.1840	Doc Type:	If docs needed, set a value
Doc Text:	A flaw was found in Vim, where it is vulnerable to a use-after-free in the buflist_altfpos function. This flaw allows a specially crafted file to crash software, use unexpected values, or possibly execute code when opened in Vim.	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:	2237363
Bug Blocks:	2237310

Description Patrick Del Bello 2023-09-04 18:21:03 UTC

Use After Free in GitHub repository vim/vim prior to 9.0.1840.

https://huntr.dev/bounties/1ce1fd8c-050a-4373-8004-b35b61590217
https://github.com/vim/vim/commit/e1dc9a627536304bc4f738c21e909ad9fcf3974c

Comment 2 Sandipan Roy 2023-09-05 05:01:45 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.

Comment 3 Marian Rehak 2023-09-05 06:14:19 UTC

Created vim tracking bugs for this issue:

Affects: fedora-all [bug 2237363]