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 -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 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 outdated (0.9.8l and older) OpenSSL libraries.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 > -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.22 (MingW32) iQIcBAEBAgAGBQJVne8iAAoJEGvSOzfXE+nLoKcQAKWz18aIZ3cWLfxXCMklqbF6 3cb5/22qBxXXeaPVwqhxeS/yV4hFxuWp6u9DBbALxdXYpyQoM5NTtPC+nG2a1GxY mHV1QRgA/JMXlgjYfvOTavM3XPfTetdu83eM+36DxEk29j59rKkWsf3RQ2RNxPCo 9jORKFnS825aCG+8K0450ueP6aSP+HzazaEFQEKehA38wAzpXcAFa7aJzJJjE8Qr RahLxuXX7LdOAG3ZMZMbgqOW9j5SgNU88+KiY/jC9yFbH1e9nT7LsnEGSszlSj2r b/MGFzyxCLaH/Q4XiPIdRxuvAP1pYDR1c4yFBPqsgLD+R3ZAkZUthyd+nHUTcOTi DoVfZKBexLByXXYuuTOiNeRfuKCd+ZOhH2wFDw+bhoZq1tcxPNcjOcAoJDF+mdK0 Cwwq7hSv1AlZGYOdr6ArMzKDqyq3wgaSkJKVMMxi5f4YM4bZ9kbQMunw+ez5dBq4 gtlxrq6cr44DkN2Ty6F+o2Laz32t+tpoPOH6vHz5x1CZE5yAliCgHm5u2sA6do7s j/5aeToxMA1WPKAb2LcrZlc1ku0duVExOstXrqB70OEfqAPNqGPclISwQiiBs2yj QIkqoDf+4HJuya7eEhjIRgbsvDgqRv6G5bd+tWHHocjATK66ddyUdGNykDDhbSYq XVAdvU+KS19eHTngaUW6 =PHCB -----END PGP SIGNATURE-----
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