CVSS Meta Temp Score CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.	Current Exploit Price (≈) Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.	CTI Interest Score Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
4.9	$0-$5k	0.00

A vulnerability was found in Linux Kernel up to 3.12.1 (Operating System). It has been rated as problematic. Affected by this issue is the function __ptrace_may_access of the file kernel/ptrace.c. The manipulation with an unknown input leads to a access control vulnerability. Using CWE to declare the problem leads to CWE-264. Impacted is confidentiality, and integrity. CVE summarizes:

The Linux kernel before 3.12.2 does not properly use the get_dumpable function, which allows local users to bypass intended ptrace restrictions or obtain sensitive information from IA64 scratch registers via a crafted application, related to kernel/ptrace.c and arch/ia64/include/asm/processor.h.

The issue has been introduced in 12/03/2009. The weakness was released 11/13/2013 by Vasily Kulikov as exec/ptrace: fix get_dumpable() incorrect tests as confirmed git commit (GIT Repository). The advisory is available at git.kernel.org. The public release was coordinated with the vendor. This vulnerability is handled as CVE-2013-2929 since 04/11/2013. Local access is required to approach this attack. No form of authentication is required for exploitation. Technical details are known, but there is no available exploit. This vulnerability is assigned to T1068 by the MITRE ATT&CK project.

The vulnerability was handled as a non-public zero-day exploit for at least 1441 days. During that time the estimated underground price was around $5k-$25k. The vulnerability scanner Nessus provides a plugin with the ID 72535 (Oracle Linux 6 : unbreakable enterprise kernel (ELSA-2014-3011)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Oracle Linux Local Security Checks. The commercial vulnerability scanner Qualys is able to test this issue with plugin 167699 (SUSE Enterprise Linux Security update for Linux kernel (SUSE-SU-2015:0481-1) - (Deprecated)).

Upgrading to version 3.4.71, 3.10.21, 3.11.10 or 3.12.2 eliminates this vulnerability. Applying a patch is able to eliminate this problem. The bugfix is ready for download at git.kernel.org. The best possible mitigation is suggested to be upgrading to the latest version. A possible mitigation has been published immediately after the disclosure of the vulnerability.

The vulnerability is also documented in the vulnerability database at Tenable (72535). Entries connected to this vulnerability are available at 10108, 10110, 10114 and 10998.

Productinfo

Type

• Operating System

Vendor

• Linux

Name

• Kernel

Version

• 2.6.32.61
• 2.6.34.14
• 3.2.53
• 3.4.70
• 3.10.20
• 3.11.9
• 3.12.1

License

• open-source

CPE 2.3info

• 🔍
• 🔍
• 🔍

CPE 2.2info

• 🔍
• 🔍
• 🔍

CVSSv4info

VulDB CVSS-B Score: 🔍
VulDB CVSS-BT Score: 🔍
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.1
VulDB Meta Temp Score: 4.9

VulDB Base Score: 5.1
VulDB Temp Score: 4.9
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

AV	AC	Au	C	I	A
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳

Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
unlock	unlock	unlock	unlock	unlock	unlock
unlock	unlock	unlock	unlock	unlock	unlock
unlock	unlock	unlock	unlock	unlock	unlock

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

NVD Base Score: 🔍

Exploitinginfo

Class: Access control
CWE: CWE-264
ATT&CK: T1068

Local: Yes
Remote: No

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-Day	unlock	unlock	unlock	unlock
Today	unlock	unlock	unlock	unlock

Nessus ID: 72535
Nessus Name: Oracle Linux 6 : unbreakable enterprise kernel (ELSA-2014-3011)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Port: 🔍

OpenVAS ID: 881879
OpenVAS Name: CentOS Update for kernel CESA-2014:0159 centos6
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: 🔍

Upgrade: Kernel 3.4.71/3.10.21/3.11.10/3.12.2
Patch: git.kernel.org

Timelineinfo

12/03/2009 🔍
04/11/2013 +1225 days 🔍
11/13/2013 +216 days 🔍
11/13/2013 +0 days 🔍
12/05/2013 +22 days 🔍
12/06/2013 +1 days 🔍
12/08/2013 +2 days 🔍
12/09/2013 +1 days 🔍
02/17/2014 +70 days 🔍
06/02/2021 +2662 days 🔍

Sourcesinfo

Vendor: kernel.org

Advisory: exec/ptrace: fix get_dumpable() incorrect tests
Researcher: Vasily Kulikov
Status: Confirmed
Confirmation: 🔍
Coordinated: 🔍

CVE: CVE-2013-2929 (🔍)
OVAL: 🔍

Vulnerability Center: 42482 - Linux Kernel <3.11.10 Local Privilege Escalation Vulnerability in get_dumpable(), Low
SecurityFocus: 63359
Secunia: 55922 - Linux Kernel Multiple Vulnerabilities, Less Critical
OSVDB: 100508

See also: 🔍

Entryinfo

Created: 12/05/2013 09:46
Updated: 06/02/2021 15:54
Changes: 12/05/2013 09:46 (84), 05/16/2017 16:42 (2), 06/02/2021 15:54 (3)
Complete: 🔍
Committer: olku

Discussion

Do you need the next level of professionalism?

Upgrade your account now!