Linux Kernel 2.6.17.8 ULE SNDU Size 0 denial of service

CVSS Meta Temp Score
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CTI Interest Score
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6.7$0-$5k0.00

Summaryinfo

A vulnerability classified as problematic has been found in Linux Kernel 2.6.17.8. Affected by this vulnerability is an unknown functionality of the component ULE SNDU. The manipulation as part of Size 0 leads to denial of service. This vulnerability is traded as CVE-2006-4623. There is no exploit available. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability was found in Linux Kernel 2.6.17.8 (Operating System). It has been rated as critical. This issue affects some unknown processing of the component ULE SNDU. The manipulation as part of a Size 0 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. The summary by CVE is:

The Unidirectional Lightweight Encapsulation (ULE) decapsulation component in dvb-core/dvb_net.c in the dvb driver in the Linux kernel 2.6.17.8 allows remote attackers to cause a denial of service (crash) via an SNDU length of 0 in a ULE packet.

The bug was discovered 08/21/2006. The weakness was shared 09/11/2006 by Ang Way Chuang (Website). It is possible to read the advisory at lkml.org. The identification of this vulnerability is CVE-2006-4623 since 09/07/2006. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. The technical details are unknown and an exploit is not publicly available.

It is declared as proof-of-concept. The vulnerability was handled as a non-public zero-day exploit for at least 86 days. During that time the estimated underground price was around $5k-$25k. The vulnerability scanner Nessus provides a plugin with the ID 28090 (Ubuntu 6.06 LTS : linux-source-2.6.15 vulnerability (USN-489-1)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Ubuntu Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 156246 (Oracle Enterprise Linux Update for Kernel (ELSA-2006:0617, ELSA-2006:0689)).

Upgrading eliminates this vulnerability. Applying a patch is able to eliminate this problem. The bugfix is ready for download at lkml.org. The best possible mitigation is suggested to be upgrading to the latest version. A possible mitigation has been published 12 months after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at X-Force (28857), Tenable (28090), SecurityFocus (BID 19939†), OSVDB (28718†) and Secunia (SA26139†). The entries VDB-2256, VDB-2254, VDB-2255 and VDB-2257 are related to this item. Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.5
VulDB Meta Temp Score: 6.7

VulDB Base Score: 7.5
VulDB Temp Score: 6.7
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

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

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Proof-of-Concept

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 28090
Nessus Name: Ubuntu 6.06 LTS : linux-source-2.6.15 vulnerability (USN-489-1)
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: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

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

Patch: lkml.org

Timelineinfo

06/17/2006 🔍
08/21/2006 +65 days 🔍
08/21/2006 +0 days 🔍
09/07/2006 +17 days 🔍
09/11/2006 +4 days 🔍
09/11/2006 +0 days 🔍
09/11/2006 +0 days 🔍
09/11/2006 +0 days 🔍
09/13/2006 +1 days 🔍
10/16/2006 +33 days 🔍
07/19/2007 +276 days 🔍
11/10/2007 +114 days 🔍
07/09/2019 +4259 days 🔍

Sourcesinfo

Vendor: kernel.org

Advisory: lkml.org
Researcher: Ang Way Chuang
Status: Not defined
Confirmation: 🔍

CVE: CVE-2006-4623 (🔍)
GCVE (CVE): GCVE-0-2006-4623
GCVE (VulDB): GCVE-100-2519

OVAL: 🔍

X-Force: 28857
SecurityFocus: 19939 - Linux Kernel ULE Packet Handling Remote Denial of Service Vulnerability
Secunia: 26139 - Ubuntu update for kernel and redhat-cluster-suite, Moderately Critical
OSVDB: 28718 - Linux Kernel ULE Processing Malformed SNDU Value DoS
Vulnerability Center: 12903 - Linux Kernel Malformed ULE Packet Denial of Service, Medium
Vupen: ADV-2006-3551

See also: 🔍

Entryinfo

Created: 09/13/2006 12:16
Updated: 07/09/2019 10:20
Changes: 09/13/2006 12:16 (99), 07/09/2019 10:20 (1)
Complete: 🔍
Cache ID: 216:E6A:103

Be aware that VulDB is the high quality source for vulnerability data.

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