OpenSSL remote vulnerability
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Mr. Hornik discovered remote vulnerability in OpenSSL package provided by RedHat. Because of nature of this bug some other vendors can be vulnerable too. This vulnerability is inside SSLv2 server code and allows killing remote process running OpenSSL library as SSL server, resulting in DoS.
The vulnerability is different from one found in SSLv2 OpenSSL server announced on 2002/07/30.
Who is affected?
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Affected are all RedHat distributions up to version 8.0 including.
RedHat published patch on 2003/09/30 silently without issuing warning
about existence of vulnerability. RedHat announced the patch in its
advisory RHSA-2003:291-11.
openssl.org sources starting with version 0.9.6f and distribution
packages based on these versions are not vulnerable, because OpenSSL
starting from 0.9.6f are avoiding using die() call because of its
potential risk.
Recommendations
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We recommend to upgrade openssl package to the version issued on
2003/09/30 and after in all RedHat distributions up to 8.0. Until the
new version will be installed we recommend to disable SSLv2
functionality whenever it is possible. (In Apache + mod_ssl for
example it is enabled by default and it can be disabled, please refer
to mod_ssl documentation.)
Full text here:
http://www.ebitech.sk/patrik/SA/SA-20031002.txt
unSpawn:
Please note I haven't checked for an RHSA yet