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Debian: DSA 253-1 Moderate: OpenSSL Information Leak Remote Attack

debian
Calendar Grey February 24, 2003
Debian Logo
OpenSSL has a critical information leak flaw posing security risks. Immediate upgrades are advised for affected Debian systems.
OpenSSL has been found to vulnerable to a timing-based attack on CBC ciphersuites used in SSL and TLS.

Summary

A vulnerability has been discovered in OpenSSL, a Secure Socket Layer
(SSL) implementation. In an upcoming paper, Brice Canvel (EPFL),
Alain Hiltgen (UBS), Serge Vaudenay (EPFL), and Martin Vuagnoux (EPFL,
Ilion) describe and demonstrate a timing-based attack on CBC cipher
suites used in SSL and TLS. OpenSSL has been found to vulnerable to
this attack.

For the stable distribution (woody) this problem has been
fixed in version 0.9.6c-2.woody.2.

For the old stable distribution (potato) this problem has been fixed
in version 0.9.6c-0.potato.5. Please note that this updates the
version from potato-proposed-updates that superseds the version in
potato.

For the unstable distribution (sid) this problem has been fixed in
version 0.9.7a-1.

We recommend that you upgrade your openssl packages.


Upgrade Instructions
--------------------

wget url
will fetch the file for you
dpkg -i file.deb
will install the referenced file.

If you are using the apt-get package manager, use the line for
sources.list ...

Read the Full Advisory

Package: openssl

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