squid -- several remote denial of service vulnerabilities

Squid security advisory 2009:2 reports:

Due to incorrect buffer limits and related bound checks Squid
is vulnerable to a denial of service attack when processing
specially crafted requests or responses.
Due to incorrect data validation Squid is vulnerable to a
denial of service attack when processing specially crafted
responses.
These problems allow any trusted client or external server to
perform a denial of service attack on the Squid service.

Squid-2.x releases are not affected.