Linux Kernel up to 2.6.14.3 dst_ca.c memory corruption

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 has been found in Linux Kernel (Operating System) and classified as problematic. This vulnerability affects an unknown function of the file dst_ca.c. The manipulation with an unknown input leads to a memory corruption vulnerability. The CWE definition for the vulnerability is CWE-119. The product performs operations on a memory buffer, but it can read from or write to a memory location that is outside of the intended boundary of the buffer. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

Buffer overflow in the CA-driver (dst_ca.c) for TwinHan DST Frontend/Card in Linux kernel 2.6.12 and other versions before 2.6.15 allows local users to cause a denial of service (crash) and possibly execute arbitrary code by "reading more than 8 bytes into an 8 byte long array".

The bug was discovered 11/08/2005. The weakness was presented 12/31/2005 by Perceval Anichini (Website). The advisory is available at ubuntulinux.org. This vulnerability was named CVE-2005-4639 since 01/10/2006. The exploitation appears to be easy. Local access is required to approach this attack. No form of authentication is required for a successful 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 197 days. During that time the estimated underground price was around $25k-$100k. The vulnerability scanner Nessus provides a plugin with the ID 20939 (Mandrake Linux Security Advisory : kernel (MDKSA-2006:040)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Mandriva Local Security Checks and running in the context l.

Upgrading to version 2.6.12 eliminates this vulnerability. A possible mitigation has been published 2 months after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at X-Force (23988) and Tenable (20939). See 1942, 1945, 1943 and 1944 for similar entries.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB CVSS-B 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

AVACAuCIA
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VulDB Base Score: 🔍
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Exploitinginfo

Class: Memory corruption
CWE: CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Local: Yes
Remote: No

Availability: 🔍
Status: Proof-of-Concept

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EPSS Percentile: 🔍

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Current Price Estimation: 🔍

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Nessus ID: 20939
Nessus Name: Mandrake Linux Security Advisory : kernel (MDKSA-2006:040)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

Threat Intelligenceinfo

Interest: 🔍
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Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

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

Upgrade: Kernel 2.6.12

Timelineinfo

06/17/2005 🔍
11/08/2005 +144 days 🔍
12/31/2005 +53 days 🔍
12/31/2005 +0 days 🔍
12/31/2005 +0 days 🔍
01/04/2006 +4 days 🔍
01/04/2006 +0 days 🔍
01/10/2006 +6 days 🔍
02/17/2006 +38 days 🔍
02/19/2006 +2 days 🔍
09/11/2007 +569 days 🔍
03/12/2015 +2739 days 🔍
07/25/2019 +1596 days 🔍

Sourcesinfo

Vendor: kernel.org

Advisory: ubuntulinux.org
Researcher: Perceval Anichini
Status: Not defined
Confirmation: 🔍

CVE: CVE-2005-4639 (🔍)
X-Force: 23988
Vulnerability Center: 16029 - Linux Kernel CA-Driver for TwinHan DST Frontend/Card Buffer Overflow Allows Code Execution, Medium
SecurityFocus: 16142 - Linux Kernel DVB Driver Local Buffer Overflow Vulnerability
Secunia: 18216
OSVDB: 22216 - Linux Kernel - DVB Driver Local Buffer Overflow Issue
Vupen: ADV-2006-0035

See also: 🔍

Entryinfo

Created: 03/12/2015 11:11
Updated: 07/25/2019 16:42
Changes: 03/12/2015 11:11 (77), 07/25/2019 16:42 (4)
Complete: 🔍

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