Linux Kernel up to 2.6.17.5 /proc race condition

CVSS Meta Temp Score
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CTI Interest Score
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5.7$0-$5k0.00

Summaryinfo

A vulnerability classified as problematic has been found in Linux Kernel up to 2.6.17.5. This vulnerability affects unknown code of the file /proc. Performing a manipulation results in race condition. This vulnerability is cataloged as CVE-2006-3626. The attack must originate from the local network. Furthermore, there is an exploit available. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability, which was classified as problematic, was found in Linux Kernel up to 2.6.17.5 (Operating System). This affects some unknown processing of the file /proc. The manipulation with an unknown input leads to a race condition vulnerability. CWE is classifying the issue as CWE-362. The product contains a code sequence that can run concurrently with other code, and the code sequence requires temporary, exclusive access to a shared resource, but a timing window exists in which the shared resource can be modified by another code sequence that is operating concurrently. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

Race condition in Linux kernel 2.6.17.4 and earlier allows local users to gain root privileges by using prctl with PR_SET_DUMPABLE in a way that causes /proc/self/environ to become setuid root.

The weakness was shared 07/17/2006 by Joanna R. (h00lyshit) (Website). It is possible to read the advisory at kernel.org. This vulnerability is uniquely identified as CVE-2006-3626 since 07/14/2006. Access to the local network is required for this attack to succeed. No form of authentication is needed for exploitation. Technical details and a public exploit are known.

A public exploit has been developed in Binary and been published 3 hours after the advisory. The exploit is shared for download at lists.grok.org.uk. It is declared as proof-of-concept. The vulnerability scanner Nessus provides a plugin with the ID 22653 (Debian DSA-1111-2 : kernel-source-2.6.8 - race condition), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Debian 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 kernel.org. The best possible mitigation is suggested to be upgrading to the latest version. A possible mitigation has been published 2 weeks after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at X-Force (27790), Tenable (22653), SecurityFocus (BID 18992†), OSVDB (27120†) and Secunia (SA21123†). The entries VDB-2256, VDB-2254, VDB-2255 and VDB-2257 are related to this item. 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: 6.3
VulDB Meta Temp Score: 5.7

VulDB Base Score: 6.3
VulDB Temp Score: 5.7
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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VulDB Base Score: 🔍
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Exploitinginfo

Class: Race condition
CWE: CWE-362
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: Partially

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: 22653
Nessus Name: Debian DSA-1111-2 : kernel-source-2.6.8 - race condition
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍
Nessus Port: 🔍

OpenVAS ID: 65035
OpenVAS Name: SLES9: Security update for Linux kernel
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: 🔍
Exploit Delay Time: 🔍

Patch: kernel.org

Timelineinfo

07/14/2006 🔍
07/14/2006 +0 days 🔍
07/14/2006 +0 days 🔍
07/17/2006 +3 days 🔍
07/17/2006 +0 days 🔍
07/17/2006 +0 days 🔍
07/17/2006 +0 days 🔍
07/18/2006 +0 days 🔍
07/20/2006 +2 days 🔍
07/26/2006 +6 days 🔍
09/04/2006 +40 days 🔍
10/14/2006 +40 days 🔍
03/13/2021 +5264 days 🔍

Sourcesinfo

Vendor: kernel.org

Advisory: kernel.org
Researcher: Joanna R. (h00lyshit)
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2006-3626 (🔍)
GCVE (CVE): GCVE-0-2006-3626
GCVE (VulDB): GCVE-100-2379

OVAL: 🔍

X-Force: 27790 - Linux kernel /proc race condition, Medium Risk
SecurityFocus: 18992 - Linux Kernel PROC Filesystem Local Privilege Escalation Vulnerability
Secunia: 21123 - Debian update for kernel-source, Less Critical
OSVDB: 27120 - Linux Kernel /proc/self/environ prctl Race Condition Local Privilege Escalation
Vulnerability Center: 12616 - Linux Kernel Race Condition Privileges Escalation, High
Vupen: ADV-2006-2816

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

Entryinfo

Created: 07/17/2006 15:47
Updated: 03/13/2021 09:42
Changes: 07/17/2006 15:47 (94), 06/07/2017 14:55 (10), 03/13/2021 09:42 (2)
Complete: 🔍
Cache ID: 216:A88:103

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

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