Bug 1565318 – CVE-2018-9251 libxml2: infinite loop in xz_decomp function in xzlib.c

Bugzilla will be upgraded to version 5.0 on a still to be determined date in the near future. The original upgrade date has been delayed.

Bug 1565318 - (CVE-2018-9251) CVE-2018-9251 libxml2: infinite loop in xz_decomp function in xzlib.c

Summary:	CVE-2018-9251 libxml2: infinite loop in xz_decomp function in xzlib.c

Status:	NEW

Aliases:	CVE-2018-9251

Product:	Security Response
Classification:	Other
Component:	vulnerability (Show other bugs)
Sub Component:
Version:	unspecified
Hardware:	All Linux

Priority	low Severity low
Target Milestone:	---
Target Release:	---
Assigned To:	Red Hat Product Security
QA Contact:
Docs Contact:

URL:
Whiteboard:	impact=low,public=20180403,reported=2...
Keywords:	Security

Depends On:	1565319 1565320 1565322 1565321
Blocks:	1565324
	Show dependency tree / graph

Reported:	2018-04-09 16:08 EDT by Laura Pardo
Modified:	2018-08-22 03:44 EDT (History)
CC List:	16 users (show)

See Also:
Fixed In Version:
Doc Type:	If docs needed, set a value
Doc Text:
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:	---

Attachments	(Terms of Use)
Add an attachment (proposed patch, testcase, etc.)

Groups: None (edit)

Description Laura Pardo 2018-04-09 16:08:29 EDT

A flaw was found in libxml2 2.9.8. The xz_decomp function in xzlib.c, if --with-lzma is used, allows remote attackers to cause a denial of service (infinite loop) via a crafted XML file that triggers LZMA_MEMLIMIT_ERROR, as demonstrated by xmllint, a different vulnerability than CVE-2015-8035.


Reference:
https://bugzilla.gnome.org/show_bug.cgi?id=794914

Comment 1 Laura Pardo 2018-04-09 16:09:07 EDT

Created mingw-libxml2 tracking bugs for this issue:

Affects: fedora-all [bug 1565320]


Created libxml2 tracking bugs for this issue:

Affects: fedora-all [bug 1565321]


Created mingw-libxml2 tracking bugs for this issue:

Affects: epel-7 [bug 1565319]

Comment 5 Stefan Cornelius 2018-04-11 05:22:48 EDT

Statement:

This issue did not affect the versions of libxml2 as shipped with Red Hat Enterprise Linux 5, 6, and 7.

Comment 9 Sam Fowler 2018-08-21 21:27:27 EDT

Upstream Patch:

https://gitlab.gnome.org/GNOME/libxml2/commit/2240fbf5912054af025fb6e01e26375100275e74

Note You need to log in before you can comment on or make changes to this bug.