CVE-2001-1155

CRITICAL

9.8

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.

CVE Details

CVSS v3.1 Score9.8

SeverityCRITICAL

CVSS VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack VectorNETWORK

ComplexityLOW

Privileges RequiredNONE

User InteractionNONE

Published8/23/2001

Last Modified4/16/2026

Sourcenvd

Honeypot Sightings0

Affected Products

freebsd:freebsd

Weaknesses (CWE)

CWE-863

References

ftp://ftp.FreeBSD.org/pub/FreeBSD/CERT/advisories/FreeBSD-SA-01:56.tcp_wrappers.asc(cve@mitre.org)

http://www.osvdb.org/5454(cve@mitre.org)

ftp://ftp.FreeBSD.org/pub/FreeBSD/CERT/advisories/FreeBSD-SA-01:56.tcp_wrappers.asc(af854a3a-2127-422b-91ae-364da2661108)

http://www.osvdb.org/5454(af854a3a-2127-422b-91ae-364da2661108)

IOC Correlations

No correlations recorded

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