Linux Kernel 2.6.23.7 tcp_sacktag_write_queue denial of service

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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5.3$0-$5k0.00

A vulnerability was found in Linux Kernel 2.6.23.7 (Operating System). It has been classified as problematic. This affects the function tcp_sacktag_write_queue. The manipulation with an unknown input leads to a denial of service vulnerability. CWE is classifying the issue as CWE-404. The product does not release or incorrectly releases a resource before it is made available for re-use. This is going to have an impact on availability. The summary by CVE is:

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 bug was discovered 11/16/2007. The weakness was released 11/19/2007 by Ilpo Järvinen with Redhat (Website). It is possible to read the advisory at kernel.org. This vulnerability is uniquely identified as CVE-2007-5500 since 10/17/2007. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. Technical details of the vulnerability 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 (40191) and Tenable (29285). Entries connected to this vulnerability are available at 3470, 3480, 3494 and 3692.

Productinfo

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Version

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB CVSS-B Score: 🔍
VulDB CVSS-BT Score: 🔍
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CVSSv3info

VulDB Meta Base Score: 5.9
VulDB Meta Temp Score: 5.3

VulDB Base Score: 5.9
VulDB Temp Score: 5.3
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

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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: 🔍
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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 🔍
11/16/2007 +0 days 🔍
11/16/2007 +0 days 🔍
11/19/2007 +3 days 🔍
11/19/2007 +0 days 🔍
11/19/2007 +0 days 🔍
11/19/2007 +0 days 🔍
12/03/2007 +13 days 🔍
12/11/2007 +8 days 🔍
12/11/2007 +0 days 🔍
02/12/2008 +63 days 🔍
08/01/2019 +4188 days 🔍

Sourcesinfo

Vendor: kernel.org

Advisory: kernel.org
Researcher: Ilpo Järvinen
Organization: Redhat
Status: Not defined
Confirmation: 🔍

CVE: CVE-2007-5500 (🔍)
OVAL: 🔍

X-Force: 40191
Vulnerability Center: 17073 - Linux Kernel Before 2.6.23.8 wait_task_stopped Function Allows Local DoS, Medium
SecurityFocus: 26477 - Linux Kernel wait_task_stopped Local Denial of Service Vulnerability
Secunia: 27664 - Linux Kernel Multiple Denial of Service Vulnerabilities, Moderately Critical
OSVDB: 39245 - Linux Kernel net/ipv4/tcp_input.c tcp_sacktag_write_queue Function Crafted ACK Reponse Remote DoS
Vupen: ADV-2007-3902

See also: 🔍

Entryinfo

Created: 12/03/2007 13:49
Updated: 08/01/2019 12:55
Changes: 12/03/2007 13:49 (99), 08/01/2019 12:55 (1)
Complete: 🔍

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