FreeBSD Security Advisory FreeBSD-SA-06:22.openssh

Colin Percival cperciva at
Mon Oct 2 14:25:12 PDT 2006

Theo de Raadt wrote:
>> The OpenSSH project believe that the race condition can lead to a Denial
>> of Service or potentially remote code execution
>                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
> Bullshit.  Where did anyone say this?

The OpenSSH 4.4 release announcement says that, actually:

 * Fix an unsafe signal hander reported by Mark Dowd. The signal
   handler was vulnerable to a race condition that could be exploited
   to perform a pre-authentication denial of service. On portable
   OpenSSH, this vulnerability could theoretically lead to
   pre-authentication remote code execution if GSSAPI authentication
   is enabled, but the likelihood of successful exploitation appears

Colin Percival

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