Executive Summary

Name CVE-2001-1155 First vendor Publication 2001-08-23
Vendor Cve Last vendor Modification 2008-09-05

Security-Database Scoring CVSS v3

Cvss vector : N/A
Overall CVSS Score NA
Base Score NA Environmental Score NA
impact SubScore NA Temporal Score NA
Exploitabality Sub Score NA
Calculate full CVSS 3.0 Vectors scores

Security-Database Scoring CVSS v2

Cvss vector : (AV:N/AC:L/Au:N/C:P/I:P/A:P)
Cvss Base Score 7.5 Attack Range Network
Cvss Impact Score 6.4 Attack Complexity Low
Cvss Expoit Score 10 Authentication None Required
Calculate full CVSS 2.0 Vectors scores


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.

Original Source

Url : http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2001-1155

CAPEC : Common Attack Pattern Enumeration & Classification

Id Name
CAPEC-1 Accessing Functionality Not Properly Constrained by ACLs
CAPEC-13 Subverting Environment Variable Values
CAPEC-17 Accessing, Modifying or Executing Executable Files
CAPEC-18 Embedding Scripts in Nonscript Elements
CAPEC-39 Manipulating Opaque Client-based Data Tokens
CAPEC-45 Buffer Overflow via Symbolic Links
CAPEC-51 Poison Web Service Registry
CAPEC-59 Session Credential Falsification through Prediction
CAPEC-60 Reusing Session IDs (aka Session Replay)
CAPEC-63 Simple Script Injection
CAPEC-73 User-Controlled Filename
CAPEC-76 Manipulating Input to File System Calls
CAPEC-77 Manipulating User-Controlled Variables
CAPEC-87 Forceful Browsing
CAPEC-104 Cross Zone Scripting

CWE : Common Weakness Enumeration

% Id Name

CPE : Common Platform Enumeration

Os 3

Open Source Vulnerability Database (OSVDB)

Id Description
5454 TCP Wrappers PARANOID Reverse DNS ACL Bypass

FreeBSD's distribution of tcp_wrappers contains a flaw that may allow a malicious user access to restricted network resources. The issue is triggered when a flawed check for a numeric result during reverse DNS lookup occurs. It is possible that the flaw may allow bypass of tcp_wrappers 'PARANOID' ACL restrictions.

Sources (Detail)

Source Url
FREEBSD ftp://ftp.FreeBSD.org/pub/FreeBSD/CERT/advisories/FreeBSD-SA-01:56.tcp_wrappe...
OSVDB http://www.osvdb.org/5454

Alert History

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Date Informations
2021-05-04 12:01:30
  • Multiple Updates
2021-04-22 01:01:39
  • Multiple Updates
2020-05-23 00:14:47
  • Multiple Updates
2019-03-19 12:01:28
  • Multiple Updates
2016-06-28 14:57:28
  • Multiple Updates
2013-05-11 12:06:21
  • Multiple Updates