Bug 2149380 (CVE-2022-45939)

Summary:	CVE-2022-45939 emacs: ctags local command execution vulnerability
Product:	[Other] Security Response	Reporter:	Guilherme de Almeida Suckevicz <gsuckevi>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED ERRATA	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	unspecified	CC:	jmigacz
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 flaw was found in Etags, the Ctags implementation of Emacs. A file with a crafted filename may result in arbitrary command execution when processed by Etags.	Story Points:	---
Clone Of:		Environment:
Last Closed:	2023-05-17 02:32:29 UTC	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:	2149381, 2149386, 2149387
Bug Blocks:	2149382

Description Guilherme de Almeida Suckevicz 2022-11-29 18:46:00 UTC

GNU Emacs through 28.2 allows attackers to execute commands via shell metacharacters in the name of a source-code file, because lib-src/etags.c uses the system C library function in its implementation of the ctags program. For example, a victim may use the "ctags *" command (suggested in the ctags documentation) in a situation where the current working directory has contents that depend on untrusted input.

Reference and upstream patch:
https://git.savannah.gnu.org/cgit/emacs.git/commit/?id=d48bb4874bc6cd3e69c7a15fc3c91cc141025c51

Comment 1 Guilherme de Almeida Suckevicz 2022-11-29 18:46:19 UTC

Created emacs tracking bugs for this issue:

Affects: fedora-all [bug 2149381]

Comment 3 errata-xmlrpc 2023-05-09 07:35:54 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9

Via RHSA-2023:2366 https://access.redhat.com/errata/RHSA-2023:2366

Comment 4 errata-xmlrpc 2023-05-16 08:46:38 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2023:3042 https://access.redhat.com/errata/RHSA-2023:3042

Comment 5 Product Security DevOps Team 2023-05-17 02:32:27 UTC

This bug is now closed. Further updates for individual products will be reflected on the CVE page(s):

https://access.redhat.com/security/cve/cve-2022-45939

Comment 7 errata-xmlrpc 2024-03-05 17:05:24 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8.6 Extended Update Support

Via RHSA-2024:1103 https://access.redhat.com/errata/RHSA-2024:1103