Title: ZoneAlarm Personal Firewall UDP Source Port 53 Bypass
Info
Disclosure
Apr 20, 2000
Discovery
Unknown
Dates
Exploit
Apr 20, 2000
Solution
Unknown
Description
ZoneAlarm contains a flaw that may allow a remote attacker to bypass the ruleset. The issue is due to ZoneAlarm not monitoring and alerting UDP traffic with a source port of 53. This allows an attacker to bypass the firewall to reach protected hosts without setting off warnings on the firewall.
Classification
Location:
Remote / Network Access
Attack Type:
Input Manipulation,
Misconfiguration
Impact:
Loss of Confidentiality
Exploit:
Exploit Public
Disclosure:
OSVDB Verified
OSVDB:
Security Software
Solution
Upgrade to version 2.1.25 or higher, as it has been reported to fix this vulnerability. An upgrade is required as there are no known workarounds.