RedHat: RHSA-2015-1197:01 Moderate: openssl security update
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.
An out-of-bounds read flaw was found in the X509_cmp_time() function of
OpenSSL. A specially crafted X.509 certificate or a Certificate Revocation
List (CRL) could possibly cause a TLS/SSL server or client using OpenSSL
to crash. (CVE-2015-1789)
A NULL pointer dereference was found in the way OpenSSL handled certain
PKCS#7 inputs. A specially crafted PKCS#7 input with missing
EncryptedContent data could cause an application using OpenSSL to crash.
(CVE-2015-1790)
A flaw was found in the way the TLS protocol composes the Diffie-Hellman
(DH) key exchange. A man-in-the-middle attacker could use this flaw to
force the use of weak 512 bit export-grade keys during the key exchange,
allowing them to decrypt all traffic. (CVE-2015-4000)
Note: This update forces the TLS/SSL client implementation in OpenSSL to
reject DH key sizes below 768 bits, which prevents sessions to be
downgraded to export-grade keys. Future updates may raise this limit to
1024 bits.
Red Hat would like to thank the OpenSSL project for reporting CVE-2015-1789
and CVE-2015-1790. Upstream acknowledges Robert Swiecki and Hanno Böck as
the original reporters of CVE-2015-1789, and Michal Zalewski as the
original reporter of CVE-2015-1790.
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.
Summary
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
References
https://access.redhat.com/security/cve/CVE-2015-1789 https://access.redhat.com/security/cve/CVE-2015-1790 https://access.redhat.com/security/cve/CVE-2015-4000 https://access.redhat.com/security/updates/classification/#moderate https://www.openssl.org/news/secadv_20150611.txt
Package List
Red Hat Enterprise Linux Desktop (v. 5 client):
Source:
openssl-0.9.8e-36.el5_11.src.rpm
i386:
openssl-0.9.8e-36.el5_11.i386.rpm
openssl-0.9.8e-36.el5_11.i686.rpm
openssl-debuginfo-0.9.8e-36.el5_11.i386.rpm
openssl-debuginfo-0.9.8e-36.el5_11.i686.rpm
openssl-perl-0.9.8e-36.el5_11.i386.rpm
x86_64:
openssl-0.9.8e-36.el5_11.i686.rpm
openssl-0.9.8e-36.el5_11.x86_64.rpm
openssl-debuginfo-0.9.8e-36.el5_11.i686.rpm
openssl-debuginfo-0.9.8e-36.el5_11.x86_64.rpm
openssl-perl-0.9.8e-36.el5_11.x86_64.rpm
RHEL Desktop Workstation (v. 5 client):
Source:
openssl-0.9.8e-36.el5_11.src.rpm
i386:
openssl-debuginfo-0.9.8e-36.el5_11.i386.rpm
openssl-devel-0.9.8e-36.el5_11.i386.rpm
x86_64:
openssl-debuginfo-0.9.8e-36.el5_11.i386.rpm
openssl-debuginfo-0.9.8e-36.el5_11.x86_64.rpm
openssl-devel-0.9.8e-36.el5_11.i386.rpm
openssl-devel-0.9.8e-36.el5_11.x86_64.rpm
Red Hat Enterprise Linux (v. 5 server):
Source:
openssl-0.9.8e-36.el5_11.src.rpm
i386:
openssl-0.9.8e-36.el5_11.i386.rpm
openssl-0.9.8e-36.el5_11.i686.rpm
openssl-debuginfo-0.9.8e-36.el5_11.i386.rpm
openssl-debuginfo-0.9.8e-36.el5_11.i686.rpm
openssl-devel-0.9.8e-36.el5_11.i386.rpm
openssl-perl-0.9.8e-36.el5_11.i386.rpm
ia64:
openssl-0.9.8e-36.el5_11.i686.rpm
openssl-0.9.8e-36.el5_11.ia64.rpm
openssl-debuginfo-0.9.8e-36.el5_11.i686.rpm
openssl-debuginfo-0.9.8e-36.el5_11.ia64.rpm
openssl-devel-0.9.8e-36.el5_11.ia64.rpm
openssl-perl-0.9.8e-36.el5_11.ia64.rpm
ppc:
openssl-0.9.8e-36.el5_11.ppc.rpm
openssl-0.9.8e-36.el5_11.ppc64.rpm
openssl-debuginfo-0.9.8e-36.el5_11.ppc.rpm
openssl-debuginfo-0.9.8e-36.el5_11.ppc64.rpm
openssl-devel-0.9.8e-36.el5_11.ppc.rpm
openssl-devel-0.9.8e-36.el5_11.ppc64.rpm
openssl-perl-0.9.8e-36.el5_11.ppc.rpm
s390x:
openssl-0.9.8e-36.el5_11.s390.rpm
openssl-0.9.8e-36.el5_11.s390x.rpm
openssl-debuginfo-0.9.8e-36.el5_11.s390.rpm
openssl-debuginfo-0.9.8e-36.el5_11.s390x.rpm
openssl-devel-0.9.8e-36.el5_11.s390.rpm
openssl-devel-0.9.8e-36.el5_11.s390x.rpm
openssl-perl-0.9.8e-36.el5_11.s390x.rpm
x86_64:
openssl-0.9.8e-36.el5_11.i686.rpm
openssl-0.9.8e-36.el5_11.x86_64.rpm
openssl-debuginfo-0.9.8e-36.el5_11.i386.rpm
openssl-debuginfo-0.9.8e-36.el5_11.i686.rpm
openssl-debuginfo-0.9.8e-36.el5_11.x86_64.rpm
openssl-devel-0.9.8e-36.el5_11.i386.rpm
openssl-devel-0.9.8e-36.el5_11.x86_64.rpm
openssl-perl-0.9.8e-36.el5_11.x86_64.rpm
These packages are GPG signed by Red Hat for security. Our key and
details on how to verify the signature are available from
https://access.redhat.com/security/team/key/
Topic
Updated openssl packages that fix three security issues are now availablefor Red Hat Enterprise Linux 5.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.
Topic
Relevant Releases Architectures
RHEL Desktop Workstation (v. 5 client) - i386, x86_64
Red Hat Enterprise Linux (v. 5 server) - i386, ia64, ppc, s390x, x86_64
Red Hat Enterprise Linux Desktop (v. 5 client) - i386, x86_64
Bugs Fixed
1223211 - CVE-2015-4000 LOGJAM: TLS connections which support export grade DHE key-exchange are vulnerable to MITM attacks
1228603 - CVE-2015-1789 OpenSSL: out-of-bounds read in X509_cmp_time
1228604 - CVE-2015-1790 OpenSSL: PKCS7 crash with missing EnvelopedContent