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GENTOO LINUX SECURITY ANNOUNCEMENT
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PACKAGE        :openssl
SUMMARY        :denial of service / remote root exploit
DATE           :2002-07-30 16:15:00

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OVERVIEW

Multiple potentially remotely exploitable vulnerabilities has been found in
OpenSSL.

DETAIL

1. The client master key in SSL2 could be oversized and overrun a
    buffer. This vulnerability was also independently discovered by
    consultants at Neohapsis (http://www.neohapsis.com/) who have also
    demonstrated that the vulerability is exploitable. Exploit code is
    NOT available at this time.

2. The session ID supplied to a client in SSL3 could be oversized and
    overrun a buffer.

3. The master key supplied to an SSL3 server could be oversized and
    overrun a stack-based buffer. This issues only affects OpenSSL
    0.9.7 before 0.9.7-beta3 with Kerberos enabled.

4. Various buffers for ASCII representations of integers were too
    small on 64 bit platforms.

The full advisory can be read at
http://www.openssl.org/news/secadv_20020730.txt

SOLUTION

It is recommended that all Gentoo Linux users update their systems as
follows.

emerge --clean rsync
emerge openssl
emerge clean

After the installation of the updated OpenSSL you should restart the services
that uses OpenSSL, which include such common services as OpenSSH, SSL-Enabled
POP3, IMAP, and SMTP servers, and stunnel-wrapped services as well.

Also, if you have an application that is statically linked to openssl you will
need to reemerge that application to build it against the new OpenSSL.

--------------------------------------------------------------------
Daniel Ahlberg
aliz@gentoo.org
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