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Red Hat RHSA-2015-2617-01 Moderate: OpenSSL Remote Exploit and Memory Leak

red hat
Calendar Grey December 14, 2015
Scroller Redhat
Critical OpenSSL security patch released for Red Hat, outlining vulnerabilities and remediation steps to safeguard user data.
Updated openssl packages that fix three security issues are now available for Red Hat Enterprise Linux 6 and 7

Solution

Before applying this update, make sure all previously released errata relevant to your system have been applied.

For details on how to apply this update, refer to:

https://access.redhat.com/articles/11258

Summary

OpenSSL is a toolkit that implements the Secure Sockets Layer (SSL v2/v3) and Transport Layer Security (TLS v1) protocols, as well as a full-strength, general purpose cryptography library.
A NULL pointer derefernce flaw was found in the way OpenSSL verified signatures using the RSA PSS algorithm. A remote attacked could possibly use this flaw to crash a TLS/SSL client using OpenSSL, or a TLS/SSL server using OpenSSL if it enabled client authentication. (CVE-2015-3194)
A memory leak vulnerability was found in the way OpenSSL parsed PKCS#7 and CMS data. A remote attacker could use this flaw to cause an application that parses PKCS#7 or CMS data from untrusted sources to use an excessive amount of memory and possibly crash. (CVE-2015-3195)
A race condition flaw, leading to a double free, was found in the way OpenSSL handled pre-shared key (PSK) identify hints. A remote attacker could use this flaw to crash a multi-threaded SSL/TLS client using OpenSSL. (CVE-2015-3196)
All openssl users are advised to upgrade to these updated packages, which contain backported patches to correct these issues. For the update to take effect, all services linked to the OpenSSL library must be restarted, or the system rebooted.

Topics%20covered

Topics Covered

security advisory security update Red Hat remote exploit moderate severity OpenSSL memory leak

References

https://access.redhat.com/security/cve/CVE-2015-3194 https://access.redhat.com/security/cve/CVE-2015-3195 https://access.redhat.com/security/cve/CVE-2015-3196 https://access.redhat.com/security/updates/classification/#moderate https://openssl-library.org/news/secadv/20151203.txt

Package List

Red Hat Enterprise Linux Desktop (v. 6):
Source: openssl-1.0.1e-42.el6_7.1.src.rpm
i386: openssl-1.0.1e-42.el6_7.1.i686.rpm openssl-debuginfo-1.0.1e-42.el6_7.1.i686.rpm
x86_64: openssl-1.0.1e-42.el6_7.1.i686.rpm openssl-1.0.1e-42.el6_7.1.x86_64.rpm openssl-debuginfo-1.0.1e-42.el6_7.1.i686.rpm openssl-debuginfo-1.0.1e-42.el6_7.1.x86_64.rpm
Red Hat Enterprise Linux Desktop Optional (v. 6):
i386: openssl-debuginfo-1.0.1e-42.el6_7.1.i686.rpm openssl-devel-1.0.1e-42.el6_7.1.i686.rpm openssl-perl-1.0.1e-42.el6_7.1.i686.rpm openssl-static-1.0.1e-42.el6_7.1.i686.rpm
x86_64: openssl-debuginfo-1.0.1e-42.el6_7.1.i686.rpm openssl-debuginfo-1.0.1e-42.el6_7.1.x86_64.rpm openssl-devel-1.0.1e-42.el6_7.1.i686.rpm openssl-devel-1.0.1e-42.el6_7.1.x86_64.rpm openssl-perl-1.0.1e-42.el6_7.1.x86_64.rpm openssl-static-1.0.1e-42.el6_7.1.x86_64.rpm
Red Hat Enterprise Linux HPC Node (v. 6):
Source: openssl-1.0.1e-42.el6_7.1.src.rpm
x86_64: openssl-1.0.1e-42.el6_7.1.i686.rpm openssl-1.0.1e-42.el6_7.1.x86_64.rpm openssl-debuginfo-1.0.1e-42.el6_7.1.i686.rpm openssl-debuginfo-1.0.1e-42.el6_7.1.x86_64.rpm
Red Hat Enterprise Linux HPC Node Optional (v. 6):
x86_64: openssl-debuginfo-1.0.1e-42.el6_7.1.i686.rpm openssl-debuginfo-1.0.1e-42.el6_7.1.x86_64.rpm openssl-devel-1.0.1e-42.el6_7.1.i686.rpm

Read the Full Advisory


Advisory ID: RHSA-2015:2617-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2015:2617.html
Issue date: 2015-12-14

Topic

Updated openssl packages that fix three security issues are now availablefor Red Hat Enterprise Linux 6 and 7.Red Hat Product Security has rated this update as having Moderate securityimpact. Common Vulnerability Scoring System (CVSS) base scores, which givedetailed severity ratings, are available for each vulnerability from theCVE links in the References section.

Topics%20covered

Topics Covered

security advisory security update Red Hat remote exploit moderate severity OpenSSL memory leak

Relevant Releases Architectures

Red Hat Enterprise Linux Client (v. 7) - x86_64

Red Hat Enterprise Linux Client Optional (v. 7) - x86_64

Red Hat Enterprise Linux ComputeNode (v. 7) - x86_64

Red Hat Enterprise Linux ComputeNode Optional (v. 7) - x86_64

Red Hat Enterprise Linux Desktop (v. 6) - i386, x86_64

Red Hat Enterprise Linux Desktop Optional (v. 6) - i386, x86_64

Red Hat Enterprise Linux HPC Node (v. 6) - x86_64

Red Hat Enterprise Linux HPC Node Optional (v. 6) - x86_64

Red Hat Enterprise Linux Server (v. 6) - i386, ppc64, s390x, x86_64

Red Hat Enterprise Linux Server (v. 7) - aarch64, ppc64, ppc64le, s390x, x86_64

Red Hat Enterprise Linux Server Optional (v. 6) - i386, ppc64, s390x, x86_64

Red Hat Enterprise Linux Server Optional (v. 7) - aarch64, ppc64, ppc64le, s390x, x86_64

Red Hat Enterprise Linux Workstation (v. 6) - i386, x86_64

Red Hat Enterprise Linux Workstation (v. 7) - x86_64

Red Hat Enterprise Linux Workstation Optional (v. 6) - i386, x86_64

Red Hat Enterprise Linux Workstation Optional (v. 7) - x86_64

Bugs Fixed

1288320 - CVE-2015-3194 OpenSSL: Certificate verify crash with missing PSS parameter

1288322 - CVE-2015-3195 OpenSSL: X509_ATTRIBUTE memory leak

1288326 - CVE-2015-3196 OpenSSL: Race condition handling PSK identify hint

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