CVE-2001-0183 EXPLOIT
7.5
HIGH · CVSS 2.0 · EPSS 8.1% (pctl 95)
Patch early
A public exploit exists.
Description
ipfw and ip6fw in FreeBSD 4.2 and earlier allows remote attackers to bypass access restrictions by setting the ECE flag in a TCP packet, which makes the packet appear to be part of an established connection.
Scoring
| CVSS | 7.5 (HIGH, v2.0) |
|---|---|
| Vector | AV:N/AC:L/Au:N/C:P/I:P/A:P |
| EPSS | 8.09% — more likely to be exploited than 95% of all CVEs |
| On CISA KEV | no |
| Public exploit | yes |
| Published | 2001-03-26 |
| Last modified | 2026-06-16 |
Affected (1)
| Vendor | Product |
|---|---|
| freebsd | freebsd |
Public exploits
| Source | Title | Date |
|---|---|---|
| exploit-db | FreeBSD 3.x/4.x - 'ipfw' Filtering Evasion | 2001-01-23 |
References
- ftp://ftp.freebsd.org/pub/FreeBSD/CERT/advisories/FreeBSD-SA-01:08.ipfw.asc
- http://www.ciac.org/ciac/bulletins/l-029.shtml
- http://www.osvdb.org/1743
- http://www.security-express.com/archives/bugtraq/2001-01/0424.html
- http://www.securityfocus.com/bid/2293
- https://exchange.xforce.ibmcloud.com/vulnerabilities/5998
- ftp://ftp.freebsd.org/pub/FreeBSD/CERT/advisories/FreeBSD-SA-01:08.ipfw.asc
- http://www.ciac.org/ciac/bulletins/l-029.shtml
- http://www.osvdb.org/1743
- http://www.security-express.com/archives/bugtraq/2001-01/0424.html
- http://www.securityfocus.com/bid/2293
- https://exchange.xforce.ibmcloud.com/vulnerabilities/5998
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