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 :: Mailing Lists

[ILUG] serious openssl/openssh hole found

[ILUG] serious openssl/openssh hole found

Luke Ashe-Browne xactly at gmail.com
Wed May 14 11:18:22 IST 2008


I have an ssl cert on my web server i've been running for over a year
and a half (dapper drake) and this should remain unaffected?
libssl 0.9.8a, I won't have to patch and regenerate?

Justin Mason wrote:
> http://lists.debian.org/debian-security-announce/2008/msg00152.html
>
>   'Luciano Bello discovered that the random number generator in Debian's
>   openssl package is predictable.  This is caused by an incorrect
>   Debian-specific change to the openssl package (CVE-2008-0166).  As a
>   result, cryptographic key material may be guessable.
>
>   It is strongly recommended that all cryptographic key material which has
>   been generated by OpenSSL versions starting with 0.9.8c-1 on Debian
>   systems (ie. since 2006!) is recreated from scratch.  Furthermore, all
>   DSA keys ever used on affected Debian systems for signing or
>   authentication purposes should be considered compromised; the Digital
>   Signature Algorithm relies on a secret random value used during
>   signature generation.'
>
>
> http://www.ubuntu.com/usn/usn-612-1 :
>
>   == Who is affected ==
>
>   Systems which are running any of the following releases:
>   * Ubuntu 7.04 (Feisty)
>   * Ubuntu 7.10 (Gutsy)
>   * Ubuntu 8.04 LTS (Hardy) 
>   * Ubuntu "Intrepid Ibex" (development): libssl <= 0.9.8g-8
>   * Debian 4.0 (etch) (see corresponding Debian security advisory)
>
>   and have openssh-server installed or have been used to create an OpenSSH
>   key or X.509 (SSL) certificate. All OpenSSH and X.509 keys generated on
>   such systems must be considered untrustworthy, regardless of the system on
>   which they are used, even after the update has been applied. This includes
>   the automatically generated host keys used by OpenSSH, which are the basis
>   for its server spoofing and man-in-the-middle protection.
>
>
> caused by this incorrect "fix" from the debian maintainers in their own
> package: http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=363516
>
> One wonders why that fix never made it upstream.
>
> bad news....
>
> --j.
>   



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