Skip to navigation

Security Advisory Important: openssl security update

Advisory: RHSA-2007:0964-4
Type: Security Advisory
Severity: Important
Issued on: 2007-10-12
Last updated on: 2007-10-12
Affected Products: RHEL Desktop Workstation (v. 5 client)
Red Hat Enterprise Linux (v. 5 server)
Red Hat Enterprise Linux Desktop (v. 5 client)
CVEs (cve.mitre.org): CVE-2007-3108
CVE-2007-4995
CVE-2007-5135

Details

Updated OpenSSL packages that correct several security issues are now
available for Red Hat Enterprise 5.

This update has been rated as having important security impact by the Red
Hat Security Response Team.

OpenSSL is a toolkit that implements Secure Sockets Layer (SSL v2/v3) and
Transport Layer Security (TLS v1) protocols as well as a full-strength
general purpose cryptography library. Datagram TLS (DTLS) is a protocol
based on TLS that is capable of securing datagram transport (UDP for
instance).

The OpenSSL security team discovered a flaw in DTLS support. An attacker
could create a malicious client or server that could trigger a heap
overflow. This is possibly exploitable to run arbitrary code, but it has
not been verified (CVE-2007-4995). Note that this flaw only affects
applications making use of DTLS. Red Hat does not ship any DTLS client or
server applications in Red Hat Enterprise Linux.

A flaw was found in the SSL_get_shared_ciphers() utility function. An
attacker could send a list of ciphers to an application that used this
function and overrun a buffer with a single byte (CVE-2007-5135). Few
applications make use of this vulnerable function and generally it is used
only when applications are compiled for debugging.

A number of possible side-channel attacks were discovered affecting
OpenSSL. A local attacker could possibly obtain RSA private keys being
used on a system. In practice these attacks would be difficult to perform
outside of a lab environment. This update contains backported patches
designed to mitigate these issues. (CVE-2007-3108).

Users of OpenSSL should upgrade to these updated packages, which contain
backported patches to resolve these issues.

Please note that the fix for the DTLS flaw involved an overhaul of the DTLS
handshake processing which may introduce incompatibilities if a new client
is used with an older server.

After installing this update, users are advised to either restart all
services that use OpenSSL or restart their system.


Solution

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

This update is available via Red Hat Network. To use Red Hat Network,
launch the Red Hat Update Agent with the following command:

up2date

This will start an interactive process that will result in the appropriate
RPMs being upgraded on your system.

Updated packages

RHEL Desktop Workstation (v. 5 client)

SRPMS:
openssl-0.9.8b-8.3.el5_0.2.src.rpm
File outdated by:  RHEA-2014:0104
    MD5: 0e1fead78b32ddfbd8f6e18dee20e8a0
 
IA-32:
openssl-devel-0.9.8b-8.3.el5_0.2.i386.rpm
File outdated by:  RHEA-2014:0104
    MD5: 2457b8ad85d2197e1195ece6d9688bc2
 
x86_64:
openssl-devel-0.9.8b-8.3.el5_0.2.i386.rpm
File outdated by:  RHEA-2014:0104
    MD5: 2457b8ad85d2197e1195ece6d9688bc2
openssl-devel-0.9.8b-8.3.el5_0.2.x86_64.rpm
File outdated by:  RHEA-2014:0104
    MD5: 168a74a6be63fc1beb9b828da91bdfe5
 
Red Hat Enterprise Linux (v. 5 server)

SRPMS:
openssl-0.9.8b-8.3.el5_0.2.src.rpm
File outdated by:  RHEA-2014:0104
    MD5: 0e1fead78b32ddfbd8f6e18dee20e8a0
 
IA-32:
openssl-0.9.8b-8.3.el5_0.2.i386.rpm
File outdated by:  RHEA-2014:0104
    MD5: 66c597116250ca9316fb20bfc6065ce4
openssl-0.9.8b-8.3.el5_0.2.i686.rpm
File outdated by:  RHEA-2014:0104
    MD5: 1d73ecb68c0a68f2320d668076dcbec5
openssl-devel-0.9.8b-8.3.el5_0.2.i386.rpm
File outdated by:  RHEA-2014:0104
    MD5: 2457b8ad85d2197e1195ece6d9688bc2
openssl-perl-0.9.8b-8.3.el5_0.2.i386.rpm
File outdated by:  RHEA-2014:0104
    MD5: 998eaa38bde4414f7bfa9cc8394660f4
 
IA-64:
openssl-0.9.8b-8.3.el5_0.2.i686.rpm
File outdated by:  RHEA-2014:0104
    MD5: 1d73ecb68c0a68f2320d668076dcbec5
openssl-0.9.8b-8.3.el5_0.2.ia64.rpm
File outdated by:  RHEA-2014:0104
    MD5: b025d862ca952a0289f55e04156cedb0
openssl-devel-0.9.8b-8.3.el5_0.2.ia64.rpm
File outdated by:  RHEA-2014:0104
    MD5: e8766e171cebbc2897f0642a0add2244
openssl-perl-0.9.8b-8.3.el5_0.2.ia64.rpm
File outdated by:  RHEA-2014:0104
    MD5: 270be09d92822984dee0c4d7e786fce3
 
PPC:
openssl-0.9.8b-8.3.el5_0.2.ppc.rpm
File outdated by:  RHEA-2014:0104
    MD5: 1141cf40960ae39388e4e8eeebc801b2
openssl-0.9.8b-8.3.el5_0.2.ppc64.rpm
File outdated by:  RHEA-2014:0104
    MD5: e30551ffb11d12b7252f95fa3a5a10c5
openssl-devel-0.9.8b-8.3.el5_0.2.ppc.rpm
File outdated by:  RHEA-2014:0104
    MD5: a9b31f8ab0d0be84bf4a4c6a7f061187
openssl-devel-0.9.8b-8.3.el5_0.2.ppc64.rpm
File outdated by:  RHEA-2014:0104
    MD5: ae7a02136749eb6add2064d575fe2358
openssl-perl-0.9.8b-8.3.el5_0.2.ppc.rpm
File outdated by:  RHEA-2014:0104
    MD5: 9552d697daafba170ecd82a0e265292a
 
s390x:
openssl-0.9.8b-8.3.el5_0.2.s390.rpm
File outdated by:  RHEA-2014:0104
    MD5: b82c768d8fbb7ed7d62d867df39b96e5
openssl-0.9.8b-8.3.el5_0.2.s390x.rpm
File outdated by:  RHEA-2014:0104
    MD5: 56868f24204f584792594cbec2744517
openssl-devel-0.9.8b-8.3.el5_0.2.s390.rpm
File outdated by:  RHEA-2014:0104
    MD5: d1fdcc96b1e94d70339efe6ae9850ab7
openssl-devel-0.9.8b-8.3.el5_0.2.s390x.rpm
File outdated by:  RHEA-2014:0104
    MD5: f7ee8f120dbbebbc5a0a51b3e9f6a86b
openssl-perl-0.9.8b-8.3.el5_0.2.s390x.rpm
File outdated by:  RHEA-2014:0104
    MD5: e543b01864c8ef794d90fc680ba1698d
 
x86_64:
openssl-0.9.8b-8.3.el5_0.2.i686.rpm
File outdated by:  RHEA-2014:0104
    MD5: 1d73ecb68c0a68f2320d668076dcbec5
openssl-0.9.8b-8.3.el5_0.2.x86_64.rpm
File outdated by:  RHEA-2014:0104
    MD5: 33d947406912ffb50948ddf17cc9e529
openssl-devel-0.9.8b-8.3.el5_0.2.i386.rpm
File outdated by:  RHEA-2014:0104
    MD5: 2457b8ad85d2197e1195ece6d9688bc2
openssl-devel-0.9.8b-8.3.el5_0.2.x86_64.rpm
File outdated by:  RHEA-2014:0104
    MD5: 168a74a6be63fc1beb9b828da91bdfe5
openssl-perl-0.9.8b-8.3.el5_0.2.x86_64.rpm
File outdated by:  RHEA-2014:0104
    MD5: 2e1118104315fd3e5387b5e0ca969266
 
Red Hat Enterprise Linux Desktop (v. 5 client)

SRPMS:
openssl-0.9.8b-8.3.el5_0.2.src.rpm
File outdated by:  RHEA-2014:0104
    MD5: 0e1fead78b32ddfbd8f6e18dee20e8a0
 
IA-32:
openssl-0.9.8b-8.3.el5_0.2.i386.rpm
File outdated by:  RHEA-2014:0104
    MD5: 66c597116250ca9316fb20bfc6065ce4
openssl-0.9.8b-8.3.el5_0.2.i686.rpm
File outdated by:  RHEA-2014:0104
    MD5: 1d73ecb68c0a68f2320d668076dcbec5
openssl-perl-0.9.8b-8.3.el5_0.2.i386.rpm
File outdated by:  RHEA-2014:0104
    MD5: 998eaa38bde4414f7bfa9cc8394660f4
 
x86_64:
openssl-0.9.8b-8.3.el5_0.2.i686.rpm
File outdated by:  RHEA-2014:0104
    MD5: 1d73ecb68c0a68f2320d668076dcbec5
openssl-0.9.8b-8.3.el5_0.2.x86_64.rpm
File outdated by:  RHEA-2014:0104
    MD5: 33d947406912ffb50948ddf17cc9e529
openssl-perl-0.9.8b-8.3.el5_0.2.x86_64.rpm
File outdated by:  RHEA-2014:0104
    MD5: 2e1118104315fd3e5387b5e0ca969266
 
(The unlinked packages above are only available from the Red Hat Network)

Bugs fixed (see bugzilla for more information)

245732 - CVE-2007-3108 RSA side-channel attack
309801 - CVE-2007-5135 openssl SSL_get_shared_ciphers() off-by-one
321191 - CVE-2007-4995 openssl dtls out of order vulnerabilitiy


References



These packages are GPG signed by Red Hat for security. Our key and details on how to verify the signature are available from:
https://www.redhat.com/security/team/key/#package

The Red Hat security contact is secalert@redhat.com. More contact details at http://www.redhat.com/security/team/contact/