CVE-2001-1155 — CRITICAL severity vulnerability (TCP Wrappers (tcp_wrappers) in FreeBSD 4.1.1 through 4.3 wit)
TCP Wrappers (tcp_wrappers) in FreeBSD 4.1.1 through 4.3 with the PARANOID ACL option enabled does not properly check the result of a reverse DNS lookup, which could allow remote attackers to bypass intended access restrictions via DNS spoofing.
| CVE ID | CVE-2001-1155 |
|---|---|
| Severity | CRITICAL |
| CVSS score | 9.8 |
| CVSS vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| CWE | CWE-863 |
| Status | Modified |
| Published | 2001-08-23 |
| Last modified | 2026-04-16 |
| Description | TCP Wrappers (tcp_wrappers) in FreeBSD 4.1.1 through 4.3 with the PARANOID ACL option enabled does not properly check the result of a reverse DNS lookup, which could allow remote attackers to bypass intended access restrictions via DNS spoofing. |
| Source | NIST National Vulnerability Database |
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