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Date: Thu, 09 Jul 2015 15:48:51 +1200
From: Amos Jeffries <squid3@...enet.co.nz>
To: oss-security@...ts.openwall.com, cve-assign@...re.org
Subject: Re: Squid HTTP proxy CVE request
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CC'ing cve-assign since there has been no reply for several days.
On 6/07/2015 11:26 p.m., Amos Jeffries wrote:
> Greetings,
>
> This months release of Squid HTTP proxy, version 3.5.6, contains
> fixes for two security issues.
>
>
> Issue #1:
>
> Due to incorrect handling of peer responses in a hierarchy of 2 or
> more proxies remote clients (or scripts run on a client) are able
> to gain unrestricted access through a gateway proxy to its backend
> proxy.
>
> If the two proxies have differing levels of security this could
> lead to authentication bypass or unprivileged access to supposedly
> secure resources.
>
> <http://www.squid-cache.org/Versions/v3/3.5/changesets/squid-3.5-13856
.p
>
>
atch>
>
> All Squid up to and including 3.5.5 are vulnerable.
>
> (when published the advisory for this will be
> <http://www.squid-cache.org/Advisories/SQUID-2015_2.txt>)
>
>
> Issue #2:
>
> This is somewhat more obscure, and I am seeking clarification
> perhapse more than assignment.
>
> Squid up to and including 3.5.5 are apparently vulnerable to DoS
> attack from malicious clients using repeated TLS renegotiation
> messages. This has not been verified as it also seems to require
> outdated (0.9.8l and older) OpenSSL libraries.
>
> <http://www.squid-cache.org/Versions/v3/3.5/changesets/squid-3.5-13849
.p
>
>
atch>
>
> CVE-2009-3555 was mentioned by the submitter, but that was clearly
> assigned for server-initiated renegotiation. This Squid change is
> specifically for the client-initiated renegotiation part of the
> TLS protocol flaw.
>
> There may be some relevant CVE already assigned, although I've
> been unable to find it. Only CVE-2011-1473 which is for the library
> itself and disputed.
>
> So, is server software being assigned specific CVE (or a shared
> generic one) for resolving this flaw? Please indicate which CVE
> Squid announcements should mention (if any).
>
>
> Thanks, Amos Jeffries Squid Software Foundation
>
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