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CVE-2001-1155

nvd nist
Published: Aug 23, 2001Modified: Apr 16, 2026

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9.8
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Exploitability: 3.9 / Impact: 5.9
Source: NVD

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.

Affected (1)

Products: Freebsd: Freebsd
Freebsd
1 product
Freebsd
Configuration A
1 vulnerable
Vulnerable SoftwareAffected Versions
Freebsd
From 4.1.1 to 4.3

Related CWEs

CWE-863
Incorrect Authorization
The product performs an authorization check when an actor attempts to access a resource or perform an action, but it does not correctly perform the check. This allows attackers to bypass intended access restrictions.

References (4)

ftp://ftp.FreeBSD.org/pub/FreeBSD/CERT/advisories/FreeBSD-SA-01:56.tcp_wrappers.asc (unsafe URL)
Source: cve@mitre.org
Broken LinkPatchVendor Advisory
Source: cve@mitre.org
Broken Link
ftp://ftp.FreeBSD.org/pub/FreeBSD/CERT/advisories/FreeBSD-SA-01:56.tcp_wrappers.asc (unsafe URL)
Source: af854a3a-2127-422b-91ae-364da2661108
Broken LinkPatchVendor Advisory
Source: af854a3a-2127-422b-91ae-364da2661108
Broken Link

Timeline

No history available yet.