VDB-50664 · CVE-2009-3624 · BID 36793

Linux Kernel 2.6.16.9 this cryptographic issues

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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5.9$0-$5k0.00

A vulnerability, which was classified as problematic, was found in Linux Kernel 2.6.16.9 (Operating System). Affected is the function this. The manipulation with an unknown input leads to a cryptographic issues vulnerability. CWE is classifying the issue as CWE-310. This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes:

The get_instantiation_keyring function in security/keys/keyctl.c in the KEYS subsystem in the Linux kernel before 2.6.32-rc5 does not properly maintain the reference count of a keyring, which allows local users to gain privileges or cause a denial of service (OOPS) via vectors involving calls to this function without specifying a keyring by ID, as demonstrated by a series of keyctl request2 and keyctl list commands.

The issue has been introduced in 03/20/2006. The weakness was shared 11/02/2009 by David Howells (Website). The advisory is shared for download at ubuntu.com. This vulnerability is traded as CVE-2009-3624. The exploitability is told to be easy. The attack needs to be approached locally. The exploitation doesn't require any form of authentication. There are known technical details, but no exploit is available. The MITRE ATT&CK project declares the attack technique as T1600.

The vulnerability was handled as a non-public zero-day exploit for at least 1323 days. During that time the estimated underground price was around $0-$5k. The vulnerability scanner Nessus provides a plugin with the ID 42400 (Fedora 11 : kernel-2.6.30.9-96.fc11 (2009-11032)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Fedora Local Security Checks. The commercial vulnerability scanner Qualys is able to test this issue with plugin 165244 (SUSE Security Update for Kernel (SUSE-SA:2010:001)).

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the vulnerability database at Tenable (42400).

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB CVSS-B Score: 🔍
VulDB CVSS-BT Score: 🔍
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

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

VulDB Base Score: 5.9
VulDB Temp Score: 5.9
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: Cryptographic issues
CWE: CWE-310
CAPEC: 🔍
ATT&CK: 🔍

Local: Yes
Remote: No

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 42400
Nessus Name: Fedora 11 : kernel-2.6.30.9-96.fc11 (2009-11032)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍

OpenVAS ID: 66200
OpenVAS Name: Fedora Core 11 FEDORA-2009-11032 (kernel)
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

03/20/2006 🔍
10/09/2009 +1298 days 🔍
10/22/2009 +13 days 🔍
10/22/2009 +0 days 🔍
11/02/2009 +11 days 🔍
11/02/2009 +0 days 🔍
11/09/2009 +7 days 🔍
03/18/2015 +1955 days 🔍
08/25/2021 +2351 days 🔍

Sourcesinfo

Vendor: kernel.org

Advisory: ubuntu.com
Researcher: David Howells
Status: Not defined
Confirmation: 🔍

CVE: CVE-2009-3624 (🔍)
OVAL: 🔍

Vulnerability Center: 23941 - Linux Kernel < 2.6.32-rc5 KEYS Subsystem Vulnerability Allows Local Attackers to Cause DoS, Medium
SecurityFocus: 36793 - Linux Kernel Keyring 'refcount' Local Integer Underflow Vulnerability

Entryinfo

Created: 03/18/2015 15:15
Updated: 08/25/2021 01:13
Changes: 03/18/2015 15:15 (59), 02/16/2017 10:12 (12), 08/25/2021 01:00 (4), 08/25/2021 01:13 (1)
Complete: 🔍
Cache ID: 3:212:103

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