Bug 1940026 (CVE-2021-28650)

Summary:	CVE-2021-28650 gnome-autoar: Directory traversal via directory symbolic links pointing outside of the destination directory (incomplete CVE-2020-36241 fix)
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:	low	Docs Contact:
Priority:	low
Version:	unspecified	CC:	klember, oholy
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	If docs needed, set a value
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2021-11-09 23:25:33 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:	1928701, 1928702, 1940027
Bug Blocks:	1940028

Description Guilherme de Almeida Suckevicz 2021-03-17 13:30:02 UTC

autoar-extractor.c in GNOME gnome-autoar before 0.3.1, as used by GNOME Shell, Nautilus, and other software, allows Directory Traversal during extraction because it lacks a check of whether a file's parent is a symlink in certain complex situations. NOTE: this issue exists because of an incomplete fix for CVE-2020-36241.

Reference and upstream patch:
https://gitlab.gnome.org/GNOME/gnome-autoar/-/commit/8109c368c6cfdb593faaf698c2bf5da32bb1ace4

Comment 1 Guilherme de Almeida Suckevicz 2021-03-17 13:31:13 UTC

Created gnome-autoar tracking bugs for this issue:

Affects: fedora-all [bug 1940027]

Comment 4 errata-xmlrpc 2021-11-09 18:30:43 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2021:4381 https://access.redhat.com/errata/RHSA-2021:4381

Comment 5 Product Security DevOps Team 2021-11-09 23:25:31 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-2021-28650