Linux Kernel up to 2.6.23.9 hrtimer_start numeric error

CVSS Meta Temp Score
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CTI Interest Score
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8.4$0-$5k0.00

A vulnerability was found in Linux Kernel up to 2.6.23.9 (Operating System) and classified as critical. This issue affects the function hrtimer_start. The manipulation with an unknown input leads to a numeric error vulnerability. Using CWE to declare the problem leads to CWE-189. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

Integer overflow in the hrtimer_start function in kernel/hrtimer.c in the Linux kernel before 2.6.23.10 allows local users to execute arbitrary code or cause a denial of service (panic) via a large relative timeout value. NOTE: some of these details are obtained from third party information.

The bug was discovered 12/07/2007. The weakness was published 12/19/2007 (Website). The advisory is shared at securityfocus.com. The identification of this vulnerability is CVE-2007-5966 since 11/14/2007. The exploitation is known to be easy. An attack has to be approached locally. No form of authentication is needed for a successful exploitation. Technical details are known, but no exploit is available.

It is declared as proof-of-concept. The vulnerability was handled as a non-public zero-day exploit for at least 71 days. During that time the estimated underground price was around $25k-$100k. The vulnerability scanner Nessus provides a plugin with the ID 67904 (Oracle Linux 5 : kernel (ELSA-2009-1193)), 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 155820 (Oracle Enterprise Linux Update for Kernel (ELSA-2009-1193)).

Upgrading to version 2.6.23.3 eliminates this vulnerability. A possible mitigation has been published 2 years after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at X-Force (39072) and Tenable (67904). Similar entry is available at 48854.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

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CVSSv3info

VulDB Meta Base Score: 9.3
VulDB Meta Temp Score: 8.4

VulDB Base Score: 9.3
VulDB Temp Score: 8.4
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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Exploitinginfo

Class: Numeric error
CWE: CWE-189
ATT&CK: Unknown

Local: Yes
Remote: No

Availability: 🔍
Status: Proof-of-Concept

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 67904
Nessus Name: Oracle Linux 5 : kernel (ELSA-2009-1193)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
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OpenVAS ID: 60047
OpenVAS Name: Debian Security Advisory DSA 1436-1 (linux-2.6)
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

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

Upgrade: Kernel 2.6.23.3

Timelineinfo

10/09/2007 🔍
11/14/2007 +36 days 🔍
12/07/2007 +23 days 🔍
12/14/2007 +7 days 🔍
12/19/2007 +5 days 🔍
12/19/2007 +0 days 🔍
12/19/2007 +0 days 🔍
12/30/2007 +11 days 🔍
08/05/2009 +584 days 🔍
07/12/2013 +1437 days 🔍
03/16/2015 +612 days 🔍
08/02/2019 +1600 days 🔍

Sourcesinfo

Vendor: kernel.org

Advisory: securityfocus.com⛔
Status: Not defined
Confirmation: 🔍

CVE: CVE-2007-5966 (🔍)
OVAL: 🔍

X-Force: 39072
Vulnerability Center: 17228 - Linux Kernel Kernel/hrtimer.c Integer Overflow Allows Local Users to Execute Code and Cause DoS, Medium
SecurityFocus: 26880 - Linux Kernel 'hrtimers' Local Denial of Service Vulnerability
Secunia: 28088
OSVDB: 40248 - CVE-2007-5966 - Linux - Integer Overflow Issue
Vupen: ADV-2007-4225

See also: 🔍

Entryinfo

Created: 03/16/2015 13:43
Updated: 08/02/2019 13:06
Changes: 03/16/2015 13:43 (73), 08/02/2019 13:06 (14)
Complete: 🔍

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