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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Definitions: (Criticality, Where etc.) http://secunia.com/about_secunia_advisories/
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