CVE-2001-1155 — CRITICAL (9.8)

Q: How severe is CVE-2001-1155?

CVE-2001-1155 has been rated CRITICAL with a CVSS base score of 9.8/10. This is considered a critical vulnerability requiring immediate attention.

Q: Is there a patch for CVE-2001-1155?

Check the references section above for vendor advisories and patch information. Affected products include: Freebsd Freebsd.

Vulnerability 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.

CVSS Score

9.8

CRITICAL

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

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality

HIGH

Integrity

HIGH

Availability

HIGH

Affected Products

Vendor	Product	Versions
Freebsd	Freebsd	>= 4.1.1, <= 4.3

Related Weaknesses (CWE)

CWE-863

References

ftp://ftp.FreeBSD.org/pub/FreeBSD/CERT/advisories/FreeBSD-SA-01:56.tcp_wrappers.Broken LinkPatchVendor Advisory
http://www.osvdb.org/5454Broken Link
ftp://ftp.FreeBSD.org/pub/FreeBSD/CERT/advisories/FreeBSD-SA-01:56.tcp_wrappers.Broken LinkPatchVendor Advisory
http://www.osvdb.org/5454Broken Link

FAQ

What is CVE-2001-1155?

CVE-2001-1155 is a vulnerability with a CVSS score of 9.8 (CRITICAL). 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 i...

How severe is CVE-2001-1155?

CVE-2001-1155 has been rated CRITICAL with a CVSS base score of 9.8/10. This is considered a critical vulnerability requiring immediate attention.

Is there a patch for CVE-2001-1155?

Check the references section above for vendor advisories and patch information. Affected products include: Freebsd Freebsd.