APP: SQUID WCCP Message Denial of Service
This signature detects invalid WCCP "I_SEE_YOU" messages sent to a Squid proxy server. A malicious user can send an invalid WCC message and cause the Squid process to crash.
Extended Description
A remote denial-of-service vulnerability affects the Web Cache Communication Protocol (WCCP) functionality of Squid Proxy. This issue is due to the application's failure to handle unexpected network data. A remote attacker may leverage this issue to crash the affected Squid Proxy, denying service to legitimate users. UPDATE: This issue was thought to result from a call to the 'recvfrom()' function. This has turned out to be incorrect; the buffer overflow from the call to 'recvfrom()' has been determined to be a new vulnerability (BID 12432).
Affected Products
Astaro security_linux
srx-branch-12.3
srx-19.3
srx-branch-19.3
vsrx3bsd-19.2
srx-branch-19.4
vsrx-19.4
mx-12.3
mx-19.4
vmx-19.4
mx-19.3
vsrx3bsd-19.4
srx-19.4
vsrx-12.3
vmx-19.3
vsrx-19.2
srx-12.3
Red_hat
Conectiva
Suse
Trustix
Squid
Sgi
Astaro
Ubuntu
Debian
5.0