Linux Kernel 2.6.23.7 wait_task_stopped denial of service

CVSS Meta Temp Score
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CTI Interest Score
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6.5$0-$5k0.00

A vulnerability was found in Linux Kernel 2.6.23.7 (Operating System) and classified as critical. Affected by this issue is the function wait_task_stopped. 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. CVE summarizes:

The wait_task_stopped function in the Linux kernel before 2.6.23.8 checks a TASK_TRACED bit instead of an exit_state value, which allows local users to cause a denial of service (machine crash) via unspecified vectors. NOTE: some of these details are obtained from third party information.

The issue has been introduced in 10/09/2007. The weakness was published 11/19/2007 by Roland McGrath with Redhat (Website). The advisory is available at kernel.org. This vulnerability is handled as CVE-2007-5500 since 10/17/2007. The attack may be launched remotely. No form of authentication is required for exploitation. Technical details are known, but there is no available exploit.

It is declared as proof-of-concept. The vulnerability was handled as a non-public zero-day exploit for at least 41 days. During that time the estimated underground price was around $5k-$25k. The vulnerability scanner Nessus provides a plugin with the ID 29285 (Fedora Core 6 : kernel-2.6.22.14-72.fc6 (2007-759)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Fedora Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 165690 (SUSE Enterprise Linux Security Update Linux Kernel (SUSE-SA:2008:032)).

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 4 months after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at X-Force (38547) and Tenable (29285). Similar entries are available at 3471, 3494, 3692 and 3706.

Productinfo

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Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB CVSS-B Score: 🔍
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CVSSv3info

VulDB Meta Base Score: 7.5
VulDB Meta Temp Score: 6.5

VulDB Base Score: 7.5
VulDB Temp Score: 6.5
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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VulDB Base Score: 🔍
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Exploitinginfo

Class: Denial of service
CWE: CWE-404
CAPEC: 🔍
ATT&CK: 🔍

Local: No
Remote: Yes

Availability: 🔍
Status: Proof-of-Concept

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 29285
Nessus Name: Fedora Core 6 : kernel-2.6.22.14-72.fc6 (2007-759)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍
Nessus Port: 🔍

OpenVAS ID: 60007
OpenVAS Name: Debian Security Advisory DSA 1428-1 (linux-2.6)
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

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

Patch: kernel.org

Timelineinfo

10/09/2007 🔍
10/17/2007 +8 days 🔍
11/16/2007 +30 days 🔍
11/19/2007 +3 days 🔍
11/19/2007 +0 days 🔍
11/19/2007 +0 days 🔍
12/03/2007 +13 days 🔍
12/11/2007 +8 days 🔍
02/12/2008 +63 days 🔍
04/27/2019 +4092 days 🔍

Sourcesinfo

Vendor: kernel.org

Advisory: kernel.org
Researcher: Roland McGrath
Organization: Redhat
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2007-5500 (🔍)
OVAL: 🔍

X-Force: 38547 - Linux kernel wait_task_stopped() denial of service, Medium Risk
SecurityFocus: 26477 - Linux Kernel wait_task_stopped Local Denial of Service Vulnerability
Secunia: 30962 - SUSE update for kernel, Moderately Critical
OSVDB: 39246 - Linux Kernel wait_task_stopped Function Local DoS
Vupen: ADV-2007-3902

See also: 🔍

Entryinfo

Created: 12/03/2007 13:49
Updated: 04/27/2019 16:17
Changes: 12/03/2007 13:49 (92), 04/27/2019 16:17 (3)
Complete: 🔍

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