Bug 595186 (CVE-2016-6309, CVE-2016-7052) – <dev-libs/openssl-1.0.2j: Multiple vulnerabilities

• Product: Gentoo Security
• Status: RESOLVED FIXED

[Description Kristian Fiskerstrand (RETIRED) 2016-09-26 11:09:09 UTC]

OpenSSL Security Advisory [26 Sep 2016]
========================================

This security update addresses issues that were caused by patches
included in our previous security update, released on 22nd September
2016.  Given the Critical severity of one of these flaws we have
chosen to release this advisory immediately to prevent upgrades to the
affected version, rather than delaying in order to provide our usual
public pre-notification.


Fix Use After Free for large message sizes (CVE-2016-6309)
==========================================================

Severity: Critical

This issue only affects OpenSSL 1.1.0a, released on 22nd September 2016.

The patch applied to address CVE-2016-6307 resulted in an issue where if a
message larger than approx 16k is received then the underlying buffer to store
the incoming message is reallocated and moved. Unfortunately a dangling pointer
to the old location is left which results in an attempt to write to the
previously freed location. This is likely to result in a crash, however it
could potentially lead to execution of arbitrary code.

OpenSSL 1.1.0 users should upgrade to 1.1.0b

This issue was reported to OpenSSL on 23rd September 2016 by Robert
ÅwiÄcki (Google Security Team), and was found using honggfuzz. The fix
was developed by Matt Caswell of the OpenSSL development team.

Missing CRL sanity check (CVE-2016-7052)
========================================

Severity: Moderate

This issue only affects OpenSSL 1.0.2i, released on 22nd September 2016.

A bug fix which included a CRL sanity check was added to OpenSSL 1.1.0
but was omitted from OpenSSL 1.0.2i. As a result any attempt to use
CRLs in OpenSSL 1.0.2i will crash with a null pointer exception.

OpenSSL 1.0.2i users should upgrade to 1.0.2j

The issue was reported to OpenSSL on 22nd September 2016 by Bruce Stephens and
Thomas Jakobi. The fix was developed by Matt Caswell of the OpenSSL development
team.

References
==========

URL for this Security Advisory:
https://www.openssl.org/news/secadv/20160926.txt

Note: the online version of the advisory may be updated with additional details
over time.

For details of OpenSSL severity classifications please see:
https://www.openssl.org/policies/secpolicy.html

[Comment 1 Lars Wendler (Polynomial-C) (RETIRED) 2016-09-26 11:49:29 UTC]

commit ded8cff386884ada7760078bd10d42cb58c73bc2
Author: Lars Wendler <[e-mail]>
Date:   Mon Sep 26 13:44:41 2016

    dev-libs/openssl: Sec bump to versions 1.0.2j and 1.1.0b (bug #595186).
    
    Removed old.
    
    Package-Manager: portage-2.3.1
    Signed-off-by: Lars Wendler <[e-mail]>


Arches please test and mark stable =dev-libs/openssl-1.0.2j with target KEYWORDS:

alpha amd64 arm ~arm64 hppa ia64 ~m68k ~mips ppc ppc64 ~s390 ~sh sparc x86 ~amd64-fbsd ~sparc-fbsd ~x86-fbsd ~arm-linux ~x86-linux

[Comment 2 Agostino Sarubbo 2016-09-26 18:57:25 UTC]

amd64 stable

[Comment 3 Agostino Sarubbo 2016-09-26 18:58:48 UTC]

x86 stable

[Comment 4 Jeroen Roovers (RETIRED) 2016-09-27 03:26:17 UTC]

Stable for HPPA PPC64.

[Comment 5 Tobias Klausmann (RETIRED) 2016-09-27 08:17:23 UTC]

Stable on alpha.

[Comment 6 Agostino Sarubbo 2016-09-29 09:42:30 UTC]

sparc stable

[Comment 7 Agostino Sarubbo 2016-09-29 12:40:10 UTC]

ppc stable

[Comment 8 Agostino Sarubbo 2016-09-29 13:16:00 UTC]

arm stable

[Comment 9 Agostino Sarubbo 2016-09-29 13:32:35 UTC]

ia64 stable.

Maintainer(s), please cleanup.

[Comment 10 Thomas Deutschmann (RETIRED) 2016-11-21 11:58:29 UTC]

Cleanup already done: https://gitweb.gentoo.org/repo/gentoo.git/commit/?id=246f6b0590667adffa8967d9ba41bc993119a553

[Comment 11 GLSAMaker/CVETool Bot 2016-12-07 10:28:27 UTC]

This issue was resolved and addressed in
 GLSA 201612-16 at https://security.gentoo.org/glsa/201612-16
by GLSA coordinator Aaron Bauman (b-man).