Linux Kernel up to 2.6.21.7 ftruncate access control

CVSS Meta Temp Score
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CTI Interest Score
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5.3$0-$5k0.00

Summaryinfo

A vulnerability identified as problematic has been detected in Linux Kernel. This issue affects the function ftruncate. Performing a manipulation results in access control. This vulnerability is known as CVE-2008-4210. Furthermore, an exploit is available. You should upgrade the affected component.

Detailsinfo

A vulnerability classified as problematic has been found in Linux Kernel (Operating System). This affects the function ftruncate. The manipulation with an unknown input leads to a access control vulnerability. CWE is classifying the issue as CWE-264. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

fs/open.c in the Linux kernel before 2.6.22 does not properly strip setuid and setgid bits when there is a write to a file, which allows local users to gain the privileges of a different group, and obtain sensitive information or possibly have unspecified other impact, by creating an executable file in a setgid directory through the (1) truncate or (2) ftruncate function in conjunction with memory-mapped I/O.

The bug was discovered 09/24/2008. The weakness was published 09/29/2008 as Bug 463661 as not defined bug report (Bugzilla). It is possible to read the advisory at bugzilla.redhat.com. This vulnerability is uniquely identified as CVE-2008-4210 since 09/24/2008. The exploitability is told to be easy. Attacking locally is a requirement. No form of authentication is needed for exploitation. Technical details and a public exploit are known. The attack technique deployed by this issue is T1068 according to MITRE ATT&CK.

A public exploit has been developed in Python. The exploit is shared for download at securityfocus.com. It is declared as proof-of-concept. The vulnerability was handled as a non-public zero-day exploit for at least 5 days. During that time the estimated underground price was around $5k-$25k. The vulnerability scanner Nessus provides a plugin with the ID 43713 (CentOS 5 : kernel (CESA-2008:0957)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family CentOS Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 165703 (SUSE Enterprise Linux Security Update Linux Kernel (SUSE-SA:2008:051)).

Upgrading 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 (45539), Exploit-DB (6851), Tenable (43713), SecurityFocus (BID 31368†) and OSVDB (49081†). Similar entries are available at VDB-39622, VDB-41704, VDB-43717 and VDB-44864. Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

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: 🔍
VulDB Temp Score: 🔍
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Exploitinginfo

Class: Access control
CWE: CWE-264
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: No

Availability: 🔍
Access: Public
Status: Proof-of-Concept
Programming Language: 🔍
Download: 🔍

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 43713
Nessus Name: CentOS 5 : kernel (CESA-2008:0957)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 61775
OpenVAS Name: Debian Security Advisory DSA 1653-1 (linux-2.6)
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Exploit-DB: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

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

Timelineinfo

05/09/2007 🔍
09/24/2008 +504 days 🔍
09/24/2008 +0 days 🔍
09/24/2008 +0 days 🔍
09/29/2008 +5 days 🔍
09/29/2008 +0 days 🔍
10/19/2008 +20 days 🔍
11/04/2008 +16 days 🔍
11/12/2008 +8 days 🔍
01/06/2010 +420 days 🔍
03/17/2015 +1896 days 🔍
12/26/2024 +3572 days 🔍

Sourcesinfo

Vendor: kernel.org

Advisory: Bug 463661
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2008-4210 (🔍)
GCVE (CVE): GCVE-0-2008-4210
GCVE (VulDB): GCVE-100-44235

OVAL: 🔍
IAVM: 🔍

X-Force: 45539
SecurityFocus: 31368 - Linux Kernel 'truncate()' Local Privilege Escalation Vulnerability
Secunia: 32485
OSVDB: 49081 - CVE-2008-4210 - Linux - Kernel - Privilege Escalation Issue
Vulnerability Center: 19745 - Linux Kernel < 2.6.22 fs/open.c truncate and ftruncate Local Privilege Escalation Vulnerability, Medium

scip Labs: https://www.scip.ch/en/?labs.20161013
See also: 🔍

Entryinfo

Created: 03/17/2015 16:11
Updated: 12/26/2024 05:07
Changes: 03/17/2015 16:11 (88), 08/18/2019 18:28 (5), 12/26/2024 05:07 (19)
Complete: 🔍
Cache ID: 216::103

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