OpenBSD 3.9/4.0 ELF ld.so

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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4.7$0-$5k0.00

Summaryinfo

A vulnerability labeled as problematic has been found in OpenBSD 3.9/4.0. This vulnerability affects unknown code of the file ld.so of the component ELF Handler. Executing a manipulation can lead to an unknown weakness. This vulnerability appears as CVE-2006-6164. In addition, an exploit is available. A patch should be applied to remediate this issue.

Detailsinfo

A vulnerability was found in OpenBSD 3.9/4.0 (Operating System). It has been declared as problematic. This vulnerability affects an unknown part of the file ld.so of the component ELF Handler. As an impact it is known to affect confidentiality, and integrity. CVE summarizes:

The _dl_unsetenv function in loader.c in the ELF ld.so in OpenBSD 3.9 and 4.0 does not properly remove duplicate environment variables, which allows local users to pass dangerous variables such as LD_PRELOAD to loading processes, which might be leveraged to gain privileges.

The weakness was presented 11/20/2006 by Justin Schuh with OpenBSD Team (Website). The advisory is available at openbsd.org. This vulnerability was named CVE-2006-6164 since 11/28/2006. The attack needs to be done within the local network. No form of authentication is required for a successful exploitation. Technical details and also a public exploit are known.

It is declared as proof-of-concept. As 0-day the estimated underground price was around $5k-$25k.

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

The vulnerability is also documented in the databases at X-Force (30441), SecurityFocus (BID 21188†), OSVDB (30514†), Secunia (SA22993†) and SecurityTracker (ID 1017253†). If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

Type

Name

Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.4
VulDB Meta Temp Score: 4.7

VulDB Base Score: 5.4
VulDB Temp Score: 4.7
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: Unknown
CWE: Unknown
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: Partially

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

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Patch
Status: 🔍

0-Day Time: 🔍

Patch: openbsd.org

Timelineinfo

11/20/2006 🔍
11/20/2006 +0 days 🔍
11/20/2006 +0 days 🔍
11/20/2006 +0 days 🔍
11/20/2006 +0 days 🔍
11/21/2006 +0 days 🔍
11/28/2006 +7 days 🔍
11/28/2006 +0 days 🔍
04/22/2018 +4163 days 🔍

Sourcesinfo

Advisory: openbsd.org
Researcher: Justin Schuh
Organization: OpenBSD Team
Status: Confirmed

CVE: CVE-2006-6164 (🔍)
GCVE (CVE): GCVE-0-2006-6164
GCVE (VulDB): GCVE-100-2698
X-Force: 30441 - OpenBSD ELF ld.so(1) privilege escalation, Medium Risk
SecurityFocus: 21188 - OpenBSD LD.SO Local Environment Variable Clearing Vulnerability
Secunia: 22993 - OpenBSD ELF ld.so Environment Cleaning Vulnerability, Less Critical
OSVDB: 30514 - Multiple BSD ELF ld.so _dl_unsetenv() Environment Sanitization Failure
SecurityTracker: 1017253

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

Entryinfo

Created: 11/21/2006 14:03
Updated: 04/22/2018 13:19
Changes: 11/21/2006 14:03 (72), 04/22/2018 13:19 (7)
Complete: 🔍
Cache ID: 216:60F:103

If you want to get best quality of vulnerability data, you may have to visit VulDB.

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