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Category:   Application (VPN)  >   OpenSSL Vendors:   OpenSSL.org
(Oracle Issues Fix for Oracle Linux) OpenSSL Multiple Bugs Let Remote Users Cause the Target Service to Crash
SecurityTracker Alert ID:  1037021
SecurityTracker URL:  http://securitytracker.com/id/1037021
CVE Reference:   CVE-2016-6306   (Links to External Site)
Date:  Oct 17 2016
Impact:   Denial of service via network
Fix Available:  Yes  Vendor Confirmed:  Yes  

Description:   Multiple vulnerabilities were reported in OpenSSL. A remote user can cause the target service or application to crash.

A remote user can send a specially crafted SHA512 TLS session ticket to trigger an out-of-bounds memory read error and cause the target server to crash [CVE-2016-6302].

A remote user can trigger an integer overflow in the MDC2_Update() function in 'crypto/mdc2/mdc2dgst.c' and cause the target service to crash in certain cases [CVE-2016-6303].

A remote user can trigger an out-of-bounds memory read error in the processing of certain TLS/SSL protocol handshake messages and cause the target application or service to crash [CVE-2016-6306]. Version 1.1.0 is not affected.

A remote user can trigger a memory allocation error in tls_get_message_header() to temporarily consume excessive memory resources on the target system [CVE-2016-6307]. DTLS users are not affected. Version 1.1.0 is affected.

A remote user can trigger a memory allocation error in dtls1_preprocess_fragment() to temporarily consume excessive memory resources on the target system [CVE-2016-6308]. TLS users are not affected. Version 1.1.0 is affected.

Shi Lei (Gear Team, Qihoo 360 Inc.) reported these vulnerabilities.

Impact:   A remote user can cause the target service or application to crash.
Solution:   Oracle has issued a fix for CVE-2016-6306.

The Oracle Linux advisory is available at:

http://linux.oracle.com/errata/ELSA-2016-3627.html

Vendor URL:  linux.oracle.com/errata/ELSA-2016-3627.html (Links to External Site)
Cause:   Access control error, Boundary error, Resource error
Underlying OS:  Linux (Oracle)
Underlying OS Comments:  5

Message History:   This archive entry is a follow-up to the message listed below.
Sep 23 2016 OpenSSL Multiple Bugs Let Remote Users Cause the Target Service to Crash



 Source Message Contents

Subject:  [El-errata] ELSA-2016-3627 Important: Oracle Linux 5 openssl security update

Oracle Linux Security Advisory ELSA-2016-3627

http://linux.oracle.com/errata/ELSA-2016-3627.html

The following updated rpms for Oracle Linux 5 have been uploaded to the 
Unbreakable Linux Network:

i386:
openssl-0.9.8e-40.0.3.el5_11.i386.rpm
openssl-0.9.8e-40.0.3.el5_11.i686.rpm
openssl-devel-0.9.8e-40.0.3.el5_11.i386.rpm
openssl-perl-0.9.8e-40.0.3.el5_11.i386.rpm

x86_64:
openssl-0.9.8e-40.0.3.el5_11.i686.rpm
openssl-0.9.8e-40.0.3.el5_11.x86_64.rpm
openssl-devel-0.9.8e-40.0.3.el5_11.i386.rpm
openssl-devel-0.9.8e-40.0.3.el5_11.x86_64.rpm
openssl-perl-0.9.8e-40.0.3.el5_11.x86_64.rpm

ia64:
openssl-0.9.8e-40.0.3.el5_11.i686.rpm
openssl-0.9.8e-40.0.3.el5_11.ia64.rpm
openssl-devel-0.9.8e-40.0.3.el5_11.ia64.rpm
openssl-perl-0.9.8e-40.0.3.el5_11.ia64.rpm


SRPMS:
http://oss.oracle.com/ol5/SRPMS-updates/openssl-0.9.8e-40.0.3.el5_11.src.rpm



Description of changes:

[0.9.8e-40.0.3]
- fix CVE-2016-2177 - possible integer overflow
- fix CVE-2016-2178 - non-constant time DSA operations
- fix CVE-2016-2182 - possible buffer overflow in BN_bn2dec()
- fix CVE-2016-6306 - certificate message OOB reads
- mitigate CVE-2016-2183 - degrade all 64bit block ciphers and RC4 to
   112 bit effective strength

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El-errata mailing list
El-errata@oss.oracle.com
https://oss.oracle.com/mailman/listinfo/el-errata
 
 


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