Bug 2224945 (CVE-2023-38633)

Summary:	CVE-2023-38633 librsvg: Arbitrary file read when xinclude href has special characters
Product:	[Other] Security Response	Reporter:	Sandipan Roy <saroy>
Component:	vulnerability	Assignee:	Nobody <nobody>
Status:	NEW ---	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	unspecified	CC:	bdettelb, bmason, desktop-qa-list, dking, mclasen, otte
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 directory traversal vulnerability was discovered in the URL decoder of Librsvg. This issue occurs when xinclude href has special characters; demonstrated by href=".?../../../../../../../../../../etc/passwd" in an xi:include element, which can allow an attacker to send a specially crafted URL request containing "dot dot" sequences (/../) to view arbitrary files on the system, affecting the data confidentiality.	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:	2224946, 2224947, 2226689, 2226690, 2226691, 2226692, 2226693, 2226694, 2226695, 2226696
Bug Blocks:	2224948

Description Sandipan Roy 2023-07-24 03:16:57 UTC

A directory traversal problem in the URL decoder of librsvg before 2.56.3 could be used by local or remote attackers to disclose files (on the local filesystem outside of the expected area), as demonstrated by href=".?../../../../../../../../../../etc/passwd" in an xi:include element.

https://gitlab.gnome.org/GNOME/librsvg/-/releases/2.56.3
https://bugzilla.suse.com/show_bug.cgi?id=1213502
https://gitlab.gnome.org/GNOME/librsvg/-/issues/996

Comment 4 David King 2023-08-09 10:20:43 UTC

Based on https://gitlab.gnome.org/GNOME/librsvg/-/issues/996#note_1806622 it seems that this may not have been classified appropriately, and so should be downgraded to medium severity (a local file is required, not network access, as incorrectly mentioned in the CVE). Nevertheless, I am investigating backporting fixes to all applicable branches.

Comment 6 errata-xmlrpc 2023-08-29 09:20:45 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9.0 Extended Update Support

Via RHSA-2023:4809 https://access.redhat.com/errata/RHSA-2023:4809

Comment 7 errata-xmlrpc 2023-09-12 10:11:26 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9

Via RHSA-2023:5081 https://access.redhat.com/errata/RHSA-2023:5081