appweb contains a flaw that may allow a remote denial of service. The issue is triggered when using format strings (%s %d %d ...) directly into the URL requested, and will result in loss of availability for the appweb server.
Classification
Location:
Remote/Network Access Required
Attack Type:
Denial of Service,
Input Manipulation
Impact:
Loss of Availability
Exploit:
Exploit Available
Disclosure:
OSVDB Verified
Solution
Upgrade to version 2.2.2 or higher, as it has been reported to fix this vulnerability.
Setting an "ErrorLog" directive in appweb.conf has also been reported as a possible workaround