Squid < 2.7.STABLE6 / 3.0.STABLE13 / HTTP Version Numbers DoS

Medium Log Correlation Engine Plugin ID 801049


The remote proxy server is susceptible to a denial of service attack.


The version of the Squid proxy caching server installed on the remote host may abort when parsing requests with an invalid HTTP version. A remote attacker may be able to leverage this issue to crash the application, thereby denying service to legitimate users.

Note that successful exploitation of this issue requires that Squid was not built with the 'NODEBUG' define.


Either apply the appropriate patches referenced in the project's advisory above or upgrade to version 2.7.STABLE6 / 3.0.STABLE13 / or higher.

See Also




Plugin Details

Severity: Medium

ID: 801049

File Name: 801049.prm

Family: Web Servers

Nessus ID: 35620

Risk Information

Risk Factor: Medium


Base Score: 5

Temporal Score: 4.1

Vector: CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:P

Temporal Vector: CVSS2#E:F/RL:OF/RC:C

Reference Information

CVE: CVE-2009-0478

BID: 33604