Bug 47887

Summary:	libxml2: Multiple issues (4.2)
Product:	UCS	Reporter:	Quality Assurance <qa>
Component:	Security updates	Assignee:	Quality Assurance <qa>
Status:	CLOSED FIXED	QA Contact:	Philipp Hahn <hahn>
Severity:	normal
Priority:	P3
Version:	UCS 4.2
Target Milestone:	UCS 4.2-5-errata
Hardware:	All
OS:	Linux
What kind of report is it?:	Security Issue	What type of bug is this?:	---
Who will be affected by this bug?:	---	How will those affected feel about the bug?:	---
User Pain:		Enterprise Customer affected?:
School Customer affected?:		ISV affected?:
Waiting Support:		Flags outvoted (downgraded) after PO Review:
Ticket number:		Bug group (optional):
Max CVSS v3 score:	6.5 (CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H)

Description Quality Assurance

2018-10-01 14:16:36 CEST

New Debian libxml2 2.9.1+dfsg1-5+deb8u7A~4.2.5.201810011416 fixes:
This update addresses the following issues:
* denial of service in xz_head function in xzlib.c (CVE-2017-18258)
* NULL pointer dereference in xpath.c:xmlXPathCompOpEval() can allow  attackers to cause a denial of service (CVE-2018-14404)
* Infinite loop when --with-lzma is used allows for denial of service via  crafted XML file (CVE-2018-14567)

Comment 1 Quality Assurance

2018-10-01 15:00:26 CEST

--- mirror/ftp/4.2/unmaintained/4.2-4/source/libxml2_2.9.1+dfsg1-5+deb8u6.dsc
+++ apt/ucs_4.2-0-errata4.2-5/source/libxml2_2.9.1+dfsg1-5+deb8u7A~4.2.5.201810011416.dsc
@@ -1,3 +1,20 @@
+2.9.1+dfsg1-5+deb8u7A~4.2.5.201810011416 [Mon, 01 Oct 2018 14:16:43 +0200] Univention builddaemon <buildd@univention.de>:
+
+  * UCS auto build. The following patches have been applied to the original source package
+    01-fix-ftbfs
+
+2.9.1+dfsg1-5+deb8u7 [Thu, 27 Sep 2018 19:03:02 +0200] Thorsten Alteholz <debian@alteholz.de>:
+
+  * Non-maintainer upload by the LTS Team. 
+  * CVE-2018-14404
+    Fix of a NULL pointer dereference which might result in a crash and
+    thus in a denial of service.
+  * CVE-2018-14567 and CVE-2018-9251
+    Approvement in LZMA error handling which prevents an infinite loop.
+  * CVE-2017-18258
+    Limit available memory to 100MB to avoid exhaustive memory
+    consumption by malicious files.
+
 2.9.1+dfsg1-5+deb8u6 [Fri, 12 Jan 2018 19:06:50 +0100] Salvatore Bonaccorso <carnil@debian.org>:
 
   * Non-maintainer upload by the Security Team.

<http://10.200.17.11/4.2-5/#5552340723958473983>

Comment 2 Philipp Hahn

2018-10-01 15:22:30 CEST

OK: yaml
OK: announce_errata
OK: patch
OK: piuparts

[4.2-5] 6fb1f0551f Bug #47887: libxml2 2.9.1+dfsg1-5+deb8u7A~4.2.5.201810011416
 doc/errata/staging/libxml2.yaml | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)

Comment 3 Arvid Requate

2018-10-04 16:17:00 CEST

<http://errata.software-univention.de/ucs/4.2/524.html>