FreeBSD 5.3/5.4/6.0/6.1 ypserv denial of service

CVSS Meta Temp Score
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CTI Interest Score
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6.2$0-$5k0.00

Summaryinfo

A vulnerability was found in FreeBSD 5.3/5.4/6.0/6.1. It has been declared as problematic. This affects an unknown function of the component ypserv. The manipulation results in denial of service. This vulnerability is cataloged as CVE-2006-2655. There is no exploit available. A patch should be applied to remediate this issue.

Detailsinfo

A vulnerability was found in FreeBSD 5.3/5.4/6.0/6.1 (Operating System). It has been classified as critical. Affected is some unknown processing of the component ypserv. The manipulation with an unknown input leads to a denial of service vulnerability. CWE is classifying the issue as CWE-404. The product does not release or incorrectly releases a resource before it is made available for re-use. This is going to have an impact on confidentiality, and integrity. CVE summarizes:

The build process for ypserv in FreeBSD 5.3 up to 6.1 accidentally disables access restrictions when using the /var/yp/securenets file, which allows remote attackers to bypass intended access restrictions.

The bug was discovered 05/31/2006. The weakness was shared 06/01/2006 by Hokan (Website). The advisory is available at security.freebsd.org. This vulnerability is traded as CVE-2006-2655 since 05/30/2006. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. The technical details are unknown and an exploit is not available.

The vulnerability was handled as a non-public zero-day exploit for at least 1 days. During that time the estimated underground price was around $5k-$25k. The vulnerability scanner Nessus provides a plugin with the ID 56851 (Fedora 14 : krb5-1.8.4-3.fc14 (2011-14650)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Fedora Local Security Checks and running in the context l.

Applying a patch is able to eliminate this problem. The bugfix is ready for download at security.FreeBSD.org. A possible mitigation has been published 6 years after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at X-Force (26792), Tenable (56851), SecurityFocus (BID 18204†), OSVDB (25852†) and Secunia (SA20389†). The entry VDB-2271 is related to this item. If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

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Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.5
VulDB Meta Temp Score: 6.2

VulDB Base Score: 6.5
VulDB Temp Score: 6.2
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Denial of service
CWE: CWE-404
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 56851
Nessus Name: Fedora 14 : krb5-1.8.4-3.fc14 (2011-14650)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 56851
OpenVAS Name: FreeBSD Security Advisory (FreeBSD-SA-06:15.ypserv.asc)
OpenVAS File: 🔍
OpenVAS Family: 🔍

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Patch
Status: 🔍

Reaction Time: 🔍
0-Day Time: 🔍
Exposure Time: 🔍

Patch: security.FreeBSD.org

Timelineinfo

05/30/2006 🔍
05/31/2006 +1 days 🔍
05/31/2006 +0 days 🔍
06/01/2006 +1 days 🔍
06/01/2006 +0 days 🔍
06/01/2006 +0 days 🔍
06/01/2006 +0 days 🔍
06/01/2006 +0 days 🔍
06/01/2006 +0 days 🔍
06/02/2006 +0 days 🔍
03/03/2009 +1005 days 🔍
10/20/2011 +961 days 🔍
11/16/2011 +27 days 🔍
03/13/2021 +3405 days 🔍

Sourcesinfo

Product: freebsd.org

Advisory: security.freebsd.org
Researcher: Hokan
Status: Confirmed

CVE: CVE-2006-2655 (🔍)
GCVE (CVE): GCVE-0-2006-2655
GCVE (VulDB): GCVE-100-2274
X-Force: 26792 - FreeBSD ypserv security bypass, Medium Risk
SecurityFocus: 18204 - FreeBSD YPServ Inoperative Access Control Vulnerability
Secunia: 20389 - FreeBSD ypserv Inoperative Access Controls Security Issue, Less Critical
OSVDB: 25852 - FreeBSD ypserv securenets Access Control Failure
SecurityTracker: 1016193
Vulnerability Center: 21155 - FreeBSD 5.3 - 6.1 Ypserv Remote Restrictions Bypass Vulnerability, Medium

See also: 🔍

Entryinfo

Created: 06/02/2006 13:14
Updated: 03/13/2021 06:17
Changes: 06/02/2006 13:14 (95), 08/28/2019 21:01 (2), 03/13/2021 06:17 (3)
Complete: 🔍
Cache ID: 216::103

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