Bug 2176473 (CVE-2023-27986)

Summary:	CVE-2023-27986 emacs: Emacs Lisp code injection via a crafted mailto URI
Product:	[Other] Security Response	Reporter:	Pedro Sampaio <psampaio>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED NOTABUG	QA Contact:
Severity:	high	Docs Contact:
Priority:	high
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 the Emacs text editor. A crafted mailto URI, when opened with emacsclient-mail.desktop, can result in Emacs Lisp code injection.	Story Points:	---
Clone Of:		Environment:
Last Closed:	2023-03-08 20:24:24 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:	2176474
Bug Blocks:	2176475

Description Pedro Sampaio 2023-03-08 13:25:21 UTC

emacsclient-mail.desktop in Emacs 28.1 through 28.2 is vulnerable to Emacs Lisp code injections through a crafted mailto: URI with unescaped double-quote characters.

References:
https://www.openwall.com/lists/oss-security/2023/03/08/2
http://www.openwall.com/lists/oss-security/2023/03/09/1

Upstream patch:
http://git.savannah.gnu.org/cgit/emacs.git/commit/?h=emacs-29&id=3c1693d08b0a71d40a77e7b40c0ebc42dca2d2cc

Comment 1 Pedro Sampaio 2023-03-08 13:25:37 UTC

Created emacs tracking bugs for this issue:

Affects: fedora-all [bug 2176474]