TITLE:
Squid Two Vulnerabilities

SECUNIA ADVISORY ID:
SA13825

VERIFY ADVISORY:
http://secunia.com/advisories/13825/

CRITICAL:
Moderately critical

IMPACT:
DoS, System access

WHERE:
>From remote

SOFTWARE:
Squid 2.x
http://secunia.com/product/310/

DESCRIPTION:
Two vulnerabilities have been reported in Squid, which can be
exploited by malicious people to cause a DoS (Denial of Service) or
potentially compromise a vulnerable system.

1) An error in the handling of invalid field values in
"WCCP_I_SEE_YOU" messages can be exploited to crash Squid by sending
a specially crafted UDP datagram with a spoofed WCCP (Web Cache
Communication Protocol) router's IP address.

Successful exploitation requires that WCCP is enabled (not default
setting).

2) A boundary error in the "gopherToHTML()" function can be exploited
via a malicious gopher server to cause a buffer overflow by responding
with a specially crafted, overly long line.

Successful exploitation may allow execution of arbitrary code.

SOLUTION:
Apply patches for 2.5.STABLE7:
http://www.squid-cache.org/Versions/v2/2.5/bugs/squid-2.5.STABLE7-gopher_html_parsing.patch
http://www.squid-cache.org/Versions/v2/2.5/bugs/squid-2.5.STABLE7-wccp_denial_of_service.patch

PROVIDED AND/OR DISCOVERED BY:
Reported by vendor.

ORIGINAL ADVISORY:
1)
http://www.squid-cache.org/Versions/v2/2.5/bugs/#squid-2.5.STABLE7-wccp_denial_of_service
2)
http://www.squid-cache.org/Versions/v2/2.5/bugs/#squid-2.5.STABLE7-gopher_html_parsing

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