Linux Kernel 2.6 include/asm/pgtable.h pmd_present PROT_NONE memory corruption

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.
5.3$0-$5k0.00

Summaryinfo

A vulnerability was found in Linux Kernel 2.6. It has been rated as problematic. Affected by this vulnerability is the function pmd_present of the file include/asm/pgtable.h. This manipulation of the argument PROT_NONE causes memory corruption. This vulnerability is tracked as CVE-2013-0309. No exploit exists. It is suggested to install a patch to address this issue.

Detailsinfo

A vulnerability classified as problematic was found in Linux Kernel 2.6 (Operating System). Affected by this vulnerability is the function pmd_present of the file include/asm/pgtable.h. The manipulation of the argument PROT_NONE 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 availability. The summary by CVE is:

arch/x86/include/asm/pgtable.h in the Linux kernel before 3.6.2, when transparent huge pages are used, does not properly support PROT_NONE memory regions, which allows local users to cause a denial of service (system crash) via a crafted application.

The weakness was disclosed 10/09/2012 by Andrea Arcangeli as 027ef6c87853b0a9df53175063028edb4950d476 as confirmed git commit (GIT Repository). The advisory is shared at git.kernel.org. The public release has been coordinated in cooperation with Linux. This vulnerability is known as CVE-2013-0309 since 12/06/2012. The exploitation appears to be easy. An attack has to be approached locally. The successful exploitation requires a single authentication. Technical details are known, but no exploit is available.

The vulnerability scanner Nessus provides a plugin with the ID 65134 (CentOS 6 : kernel (CESA-2013:0496)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family CentOS Local Security Checks. The commercial vulnerability scanner Qualys is able to test this issue with plugin 195405 (Ubuntu Security Notification for Linux-ec2 Vulnerabilities (USN-1776-1)).

Applying the patch 027ef6c87853b0a9df53175063028edb4950d476 is able to eliminate this problem. The bugfix is ready for download at git.kernel.org. A possible mitigation has been published immediately after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at X-Force (82198), Tenable (65134), SecurityFocus (BID 58046†), OSVDB (90476†) and Secunia (SA52328†). The entries VDB-7776 and VDB-7779 are pretty similar. Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Type

Vendor

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.5
VulDB Meta Temp Score: 5.3

VulDB Base Score: 5.5
VulDB Temp Score: 5.3
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
💳💳💳💳💳💳
💳💳💳💳💳💳
💳💳💳💳💳💳
VectorComplexityAuthenticationConfidentialityIntegrityAvailability
UnlockUnlockUnlockUnlockUnlockUnlock
UnlockUnlockUnlockUnlockUnlockUnlock
UnlockUnlockUnlockUnlockUnlockUnlock

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

NVD Base Score: 🔍

Exploitinginfo

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

Physical: Partially
Local: Yes
Remote: No

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-DayUnlockUnlockUnlockUnlock
TodayUnlockUnlockUnlockUnlock

Nessus ID: 65134
Nessus Name: CentOS 6 : kernel (CESA-2013:0496)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍

OpenVAS ID: 881682
OpenVAS Name: CentOS Update for kernel CESA-2013:0496 centos6
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Patch
Status: 🔍

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

Patch: 027ef6c87853b0a9df53175063028edb4950d476

Timelineinfo

10/09/2012 🔍
10/09/2012 +0 days 🔍
12/06/2012 +58 days 🔍
02/19/2013 +75 days 🔍
02/19/2013 +0 days 🔍
02/21/2013 +2 days 🔍
02/22/2013 +1 days 🔍
02/22/2013 +0 days 🔍
03/07/2013 +13 days 🔍
05/05/2021 +2981 days 🔍

Sourcesinfo

Vendor: kernel.org

Advisory: 027ef6c87853b0a9df53175063028edb4950d476
Researcher: Andrea Arcangeli
Status: Confirmed
Confirmation: 🔍
Coordinated: 🔍

CVE: CVE-2013-0309 (🔍)
GCVE (CVE): GCVE-0-2013-0309
GCVE (VulDB): GCVE-100-7777

OVAL: 🔍

X-Force: 82198
SecurityFocus: 58046 - Linux Kernel CVE-2013-0309 Local Denial of Service Vulnerability
Secunia: 52328 - Red Hat update for kernel, Less Critical
OSVDB: 90476
SecurityTracker: 1028193 - Linux Kernel PROT_NONE Bug Lets Local Users Deny Service
Vulnerability Center: 38657 - Linux Kernel Before 3.6.2 Local DoS due to Improper Support of PROT_NONE Memory Regions, Medium

See also: 🔍

Entryinfo

Created: 02/22/2013 11:29
Updated: 05/05/2021 13:05
Changes: 02/22/2013 11:29 (85), 04/25/2017 11:38 (5), 05/05/2021 13:05 (3)
Complete: 🔍
Committer:
Cache ID: 216:937:103

Discussion

No comments yet. Languages: en.

Please log in to comment.

◂ PreviousOverviewNext ▸

Interested in the pricing of exploits?

See the underground prices here!