VDB-2827 · CVE-2006-4814 · BID 21663

Linux Kernel up to 2.6.19.2 zlib_inflate cramfs Image resource management

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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5.0$0-$5k0.00

A vulnerability classified as problematic was found in Linux Kernel up to 2.6.19.2 (Operating System). Affected by this vulnerability is the function zlib_inflate. The manipulation as part of a cramfs Image leads to a resource management vulnerability. The CWE definition for the vulnerability is CWE-399. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

The mincore function in the Linux kernel before 2.4.33.6 does not properly lock access to user space, which has unspecified impact and attack vectors, possibly related to a deadlock.

The weakness was disclosed 01/11/2007 by LMH (Website). It is possible to read the advisory at projects.info-pull.com. This vulnerability is known as CVE-2006-4814 since 09/15/2006. Access to the local network is required for this attack to succeed. Required for exploitation is a single authentication. Technical details and also a exploit are known.

It is possible to download the exploit at projects.info-pull.com. It is declared as proof-of-concept. We expect the 0-day to have been worth approximately $5k-$25k. The vulnerability scanner Nessus provides a plugin with the ID 67678 (Oracle Linux 3 : kernel (ELSA-2008-0211)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Oracle Linux Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 115509 (Red Hat Kernel Security Update (RHSA-2007:0014)).

Upgrading eliminates this vulnerability. Applying a patch is able to eliminate this problem. The bugfix is ready for download at kernel.org. The best possible mitigation is suggested to be upgrading to the latest version. A possible mitigation has been published 2 years after the disclosure of the vulnerability.

The vulnerability is also documented in the vulnerability database at Tenable (67678). The entries 2551, 2589, 2647 and 2661 are pretty similar.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB CVSS-B Score: 🔍
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CVSSv3info

VulDB Meta Base Score: 5.5
VulDB Meta Temp Score: 5.0

VulDB Base Score: 5.5
VulDB Temp Score: 5.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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VulDB Base Score: 🔍
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Exploitinginfo

Class: Resource management
CWE: CWE-399 / CWE-404
CAPEC: 🔍
ATT&CK: 🔍

Local: No
Remote: Partially

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

EPSS Score: 🔍
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Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 67678
Nessus Name: Oracle Linux 3 : kernel (ELSA-2008-0211)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍
Nessus Port: 🔍

OpenVAS ID: 58357
OpenVAS Name: Debian Security Advisory DSA 1304-1 (kernel-source-2.6.8)
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

Interest: 🔍
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Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

Reaction Time: 🔍
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Patch: kernel.org

Timelineinfo

09/15/2006 🔍
12/19/2006 +95 days 🔍
12/19/2006 +0 days 🔍
01/11/2007 +23 days 🔍
01/11/2007 +0 days 🔍
01/16/2007 +5 days 🔍
05/08/2008 +478 days 🔍
07/12/2013 +1891 days 🔍
04/28/2019 +2116 days 🔍

Sourcesinfo

Vendor: kernel.org

Advisory: projects.info-pull.com
Researcher: LMH
Status: Not defined
Confirmation: 🔍

CVE: CVE-2006-4814 (🔍)
OVAL: 🔍

SecurityFocus: 21663 - Linux Kernel MinCore User Space Access Locking Local Denial of Service Vulnerability
Secunia: 23664 - Linux Kernel Local Denial of Service Vulnerabilities, Not Critical
Vupen: ADV-2006-5082

See also: 🔍

Entryinfo

Created: 01/16/2007 14:29
Updated: 04/28/2019 07:42
Changes: 01/16/2007 14:29 (87), 04/28/2019 07:42 (2)
Complete: 🔍

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