Bug 2237311 (CVE-2023-4752)

Summary:	CVE-2023-4752 vim: use-after-free in function ins_compl_get_exp in vim/vim
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 9.0.1858	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 ins_compl_get_exp 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:	2237434
Bug Blocks:	2237310

Description Patrick Del Bello 2023-09-04 18:03:08 UTC

Use After Free in GitHub repository vim/vim prior to 9.0.1858.

https://huntr.dev/bounties/85f62dd7-ed84-4fa2-b265-8a369a318757
https://github.com/vim/vim/commit/ee9166eb3b41846661a39b662dc7ebe8b5e15139

Comment 3 Sandipan Roy 2023-09-05 05:01:34 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 4 Marian Rehak 2023-09-05 14:00:21 UTC

Created vim tracking bugs for this issue:

Affects: fedora-all [bug 2237434]

Comment 5 errata-xmlrpc 2025-05-13 11:58:29 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9

Via RHSA-2025:7440 https://access.redhat.com/errata/RHSA-2025:7440