oss-sec mailing list archives

Re: CVE request - OpenSSH 6.9 PAM privilege separation vulnerabilities


From: Adam Maris <amaris () redhat com>
Date: Wed, 12 Aug 2015 13:32:12 +0200



On 12/08/15 10:39, Adam Maris wrote:
Could you assign CVEs for the other two issues as well?

 * sshd(8): fix circumvention of MaxAuthTries using keyboard-
   interactive authentication. By specifying a long, repeating
   keyboard-interactive "devices" string, an attacker could request
   the same authentication method be tried thousands of times in
   a single pass. The LoginGraceTime timeout in sshd(8) and any
   authentication failure delays implemented by the authentication
   mechanism itself were still applied. Found by Kingcope.

 * sshd(8): OpenSSH 6.8 and 6.9 incorrectly set TTYs to be world-
   writable. Local attackers may be able to write arbitrary messages
   to logged-in users, including terminal escape sequences.
   Reported by Nikolay Edigaryev.

Or have they CVEs already?

Thanks.

Well, the first one (circumvention of MaxAuthTries) was already assigned CVE-2015-5600.
Not sure about the second one.

--
Adam Maris / Red Hat Product Security


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