openssl security update
Security Advisory: Important
Updated OpenSSL packages that fix a remote denial of service vulnerability
are now available for Red Hat Enterprise Linux 2.1
This update has been rated as having important security impact by the Red
Hat Security Response Team.
The OpenSSL toolkit implements Secure Sockets Layer (SSL v2/v3),
Transport Layer Security (TLS v1) protocols, and serves as a full-strength
general purpose cryptography library.
Testing performed by the OpenSSL group using the Codenomicon TLS Test Tool
uncovered a null-pointer assignment in the do_change_cipher_spec()
function. A remote attacker could perform a carefully crafted SSL/TLS
handshake against a server that uses the OpenSSL library in such a way as
to cause OpenSSL to crash. Depending on the server this could lead to a
denial of service. (CVE-2004-0079)
This issue was reported as not affecting OpenSSL versions prior to 0.9.6c,
and testing with the Codenomicon Test Tool showed that OpenSSL 0.9.6b as
shipped in Red Hat Enterprise Linux 2.1 did not crash. However, an
alternative reproducer has been written which shows that this issue does
affect versions of OpenSSL prior to 0.9.6c.
Users of OpenSSL are advised to upgrade to these updated packages, which
contain a patch provided by the OpenSSL group that protects against this issue.
NOTE: Because server applications are affected by this issue, users are
advised to either restart all services that use OpenSSL functionality or
restart their systems after installing these updates.
Before applying this update, make sure all previously released errata
relevant to your system have been applied.
To update all RPMs for your particular architecture, run:
rpm -Fvh [filenames]
where [filenames] is a list of the RPMs you wish to upgrade. Only those
RPMs which are currently installed will be updated. Those RPMs which are
not installed but included in the list will not be updated. Note that you
can also use wildcards (*.rpm) if your current directory *only* contains the
desired RPMs.
Please note that this update is also available via Red Hat Network. Many
people find this an easier way to apply updates. 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.
(none)
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