VDB-2657 · CVE-2006-5726 · BID 20919

Sun Solaris 10.0 Unix File System denial of service

CVSS Meta Temp Score CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.	Current Exploit Price (≈) Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.	CTI Interest Score Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
5.9	$0-$5k	0.00

Summaryinfo

A vulnerability marked as problematic has been reported in Sun Solaris 10.0. The affected element is an unknown function of the component Unix File System. The manipulation leads to denial of service. This vulnerability is uniquely identified as CVE-2006-5726. Moreover, an exploit is present. The affected component should be disabled.

Detailsinfo

A vulnerability, which was classified as critical, has been found in Sun Solaris 10.0 (Operating System). This issue affects an unknown code of the component Unix File System. The manipulation with an unknown input leads to a denial of service vulnerability. Using CWE to declare the problem leads to CWE-404. The product does not release or incorrectly releases a resource before it is made available for re-use. Impacted is availability. The summary by CVE is:

alloccgblk in the UFS filesystem in Solaris 10 allows local users to cause a denial of service (memory corruption) by mounting crafted UFS filesystems with malformed data structures.

The issue has been introduced in 01/31/2005. The weakness was disclosed 11/06/2006 by LHM (Website). The advisory is shared at projects.info-pull.com. The identification of this vulnerability is CVE-2006-5726 since 11/06/2006. The attack needs to be initiated within the local network. No form of authentication is needed for a successful exploitation. Technical details are unknown but a public exploit is available.

The exploit is available at projects.info-pull.com. It is declared as proof-of-concept. The vulnerability was handled as a non-public zero-day exploit for at least 644 days. During that time the estimated underground price was around $5k-$25k.

Applying a patch is able to eliminate this problem. The bugfix is ready for download at sun.com.

The vulnerability is also documented in the databases at SecurityFocus (BID 20919†), OSVDB (30200†) and Secunia (SA22714†). The entry VDB-2658 is pretty similar. Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Type

Operating System

Vendor

Name

Solaris

Version

10.0

License

commercial

Support

end of life (old version)

Website

Vendor: https://www.oracle.com/sun/

CPE 2.3info

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CPE 2.2info

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CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.5
VulDB Meta Temp Score: 5.9

VulDB Base Score: 6.5
VulDB Temp Score: 5.9
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
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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: Partially
Local: Yes
Remote: Partially

Availability: 🔍
Access: Public
Status: Proof-of-Concept
Download: 🔍

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-Day	Unlock	Unlock	Unlock	Unlock
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Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Disable
Status: 🔍

0-Day Time: 🔍

Patch: sun.com

Timelineinfo

01/31/2005 🔍
11/04/2006 +642 days 🔍
11/06/2006 +2 days 🔍
11/06/2006 +0 days 🔍
11/06/2006 +0 days 🔍
11/06/2006 +0 days 🔍
11/06/2006 +0 days 🔍
11/07/2006 +0 days 🔍
04/26/2026 +7110 days 🔍

Sourcesinfo

Vendor: oracle.com

Advisory: projects.info-pull.com
Researcher: LHM
Status: Confirmed

CVE: CVE-2006-5726 (🔍)
GCVE (CVE): GCVE-0-2006-5726
GCVE (VulDB): GCVE-100-2657
SecurityFocus: 20919 - Sun Solaris 10 UFS Local Denial of Service Vulnerability
Secunia: 22714 - Sun Solaris UFS File System Denial Of Service, Not Critical
OSVDB: 30200 - Solaris UFS File System alloccgblk Local DoS DoS
Vupen: ADV-2006-4357

scip Labs: https://www.scip.ch/en/?labs.20161013
See also: 🔍

Entryinfo

Created: 11/07/2006 10:07
Updated: 04/26/2026 10:16
Changes: 11/07/2006 10:07 (75), 04/14/2019 14:46 (3), 04/26/2026 10:16 (23)
Complete: 🔍
Cache ID: 216::103

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.