Synopsis :

The remote service has multiple denial of service vulnerabilities.

Description :

According to its banner, the version of JanaServer running on the
remote host has the following denial of service vulnerabilities :

- The 'http-server' module (TCP port 2506) does not
correctly process requests containing a lot of
occurences of the '%' character, causing it to
consume a large amount of CPU resources.

- The 'pna-proxy' module (TCP port 1090) has an infinite
loop vulnerability when it receives a data block size
larger than the amount of data that is actually sent.

A remote attacker can reportedly freeze the server after fifteen or
more attempts to exploit these vulnerabilities.

See also :

http://archives.neohapsis.com/archives/bugtraq/2004-11/0395.html

Solution :

Upgrade to JanaServer 2.4.5 or later.

Risk factor :

High / CVSS Base Score : 7.8
(CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:C)
CVSS Temporal Score : 6.4
(CVSS2#E:F/RL:OF/RC:C)
Public Exploit Available : true