CVE-2002-0515 IPFilter 3.4.25 and earlier sets a different TTL when a port is being filtered than when it is not being filtered, which allows remote attackers to identify filtered ports by comparing TTLs.
MediumCVSS 5.0
EPSS 2.2%
- Published
- Updated
- Exploit status
- No public exploit known
Description
IPFilter 3.4.25 and earlier sets a different TTL when a port is being filtered than when it is not being filtered, which allows remote attackers to identify filtered ports by comparing TTLs.
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| phildev ipfilter | <= 3.4.25 | No fix listed |
References
- firewall-rst-fingerprint(8738) broken-link vdb-entry vendor-advisory
- 20020331 packet filter fingerprinting(open but closed, closed but filtered) broken-link mailing-list third-party-advisory vdb-entry vendor-advisory
- 4403 broken-link exploit third-party-advisory vdb-entry vendor-advisory