Bug 53472 – libxml2: Multiple issues (5.0)

Bug 53472 - libxml2: Multiple issues (5.0)


Summary:	libxml2: Multiple issues (5.0)

Status:	CLOSED FIXED

Product:	UCS
Classification:	Unclassified
Component:	Security updates
Version:	UCS 5.0
Hardware:	All Linux

Importance:	P3 normal (vote)
Target Milestone:	UCS 5.0-0-errata
Assigned To:	Quality Assurance
QA Contact:	Erik Damrose

URL:
Keywords:

Depends on:
Blocks:
	Show dependency tree / graph

Reported:	2021-06-21 09:59 CEST by Quality Assurance
Modified:	2021-06-30 18:54 CEST (History)
CC List:	0 users

See Also:
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:	8.6 (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H)

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

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

Description Quality Assurance

2021-06-21 09:59:02 CEST

New Debian libxml2 2.9.4+dfsg1-7+deb10u2 fixes:
This update addresses the following issues:
* Buffer Overflow vulnerability in xmlEncodeEntitiesInternal at  libxml2/entities.c (CVE-2020-24977)
* use-after-free in xmlEncodeEntitiesInternal() in entities.c (CVE-2021-3516)
* heap-based buffer overflow in xmlEncodeEntitiesInternal() in entities.c  (CVE-2021-3517)
* use-after-free in xmlXIncludeDoProcess() in xinclude.c (CVE-2021-3518)
* NULL pointer dereference when post-validating mix content parsed in  recovery mode (CVE-2021-3537)
* Exponential entity expansion attack bypasses all existing protection  mechanisms (CVE-2021-3541)

Comment 1 Quality Assurance

2021-06-23 15:14:22 CEST

--- mirror/ftp/pool/main/libx/libxml2/libxml2_2.9.4+dfsg1-7+deb10u1.dsc
+++ apt/ucs_5.0-0-errata5.0-0/source/libxml2_2.9.4+dfsg1-7+deb10u2.dsc
@@ -1,3 +1,17 @@
+2.9.4+dfsg1-7+deb10u2 [Fri, 11 Jun 2021 18:57:11 +0200] Salvatore Bonaccorso <carnil@debian.org>:
+
+  * Non-maintainer upload.
+  * Fix out-of-bounds read with 'xmllint --htmlout' (CVE-2020-24977)
+    (Closes: #969529)
+  * Fix use-after-free with `xmllint --html --push` (CVE-2021-3516)
+    (Closes: #987739)
+  * Validate UTF8 in xmlEncodeEntities (CVE-2021-3517) (Closes: #987738)
+  * Fix user-after-free with `xmllint --xinclude --dropdtd` (CVE-2021-3518)
+    (Closes: #987737)
+  * Propagate error in xmlParseElementChildrenContentDeclPriv (CVE-2021-3537)
+    (Closes: #988123)
+  * Patch for security issue CVE-2021-3541 (Closes: #988603)
+
 2.9.4+dfsg1-7+deb10u1 [Fri, 06 Nov 2020 18:35:40 +0100] Moritz Mühlenhoff <moritz@debian.org>:
 
   * CVE-2017-18258 (Closes: #895245)

<http://piuparts.knut.univention.de/5.0-0/#2630192578440194474>

Comment 2 Philipp Hahn

2021-06-23 15:57:10 CEST

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

[5.0-0] d6df054d9c Bug #53472: libxml2 2.9.4+dfsg1-7+deb10u2
 doc/errata/staging/libxml2.yaml | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

[5.0-0] 24e02cd931 Bug #53472: libxml2 2.9.4+dfsg1-7+deb10u2
 doc/errata/staging/libxml2.yaml | 26 ++++++++++++++++++++++++++
 1 file changed, 26 insertions(+)

Comment 3 Erik Damrose

2021-06-30 18:54:26 CEST

<https://errata.software-univention.de/#/?erratum=5.0x37>