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SYNTHESIS OF THE VULNERABILITY

An attacker can generate a buffer overflow in the SNMP service of
Squid, in order to trigger a denial of service, and possibly to
execute code.

– Impacted products: Squid
– Severity: 2/4
– Creation date: 09/09/2014

DESCRIPTION OF THE VULNERABILITY

The Squid product offers an SNMP service, which can be enabled to
obtain information about the cache.

However, the snmpHandleUdp() function of the src/snmp_core.cc file
uses a limit size too large of one byte. If the size of UDP data
is greater than the size of the storage array, an overflow occurs.

An attacker can therefore generate a buffer overflow in the SNMP
service of Squid, in order to trigger a denial of service, and
possibly to execute code.

ACCESS TO THE COMPLETE VIGIL@NCE BULLETIN

http://vigilance.fr/vulnerability/Squid-buffer-overflow-of-SNMP-15298