Linux Kernel 2.6.32.51 ghash_final null pointer dereference

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.
5.9$0-$5k0.00

Summaryinfo

A vulnerability was found in Linux Kernel 2.6.32.51. It has been rated as problematic. The impacted element is the function ghash_final. Performing a manipulation results in null pointer dereference. This vulnerability is reported as CVE-2011-4081. No exploit exists.

Detailsinfo

A vulnerability was found in Linux Kernel 2.6.32.51 (Operating System). It has been classified as critical. This affects the function ghash_final. The manipulation with an unknown input leads to a null pointer dereference vulnerability. CWE is classifying the issue as CWE-476. A NULL pointer dereference occurs when the application dereferences a pointer that it expects to be valid, but is NULL, typically causing a crash or exit. This is going to have an impact on availability. The summary by CVE is:

crypto/ghash-generic.c in the Linux kernel before 3.1 allows local users to cause a denial of service (NULL pointer dereference and OOPS) or possibly have unspecified other impact by triggering a failed or missing ghash_setkey function call, followed by a (1) ghash_update function call or (2) ghash_final function call, as demonstrated by a write operation on an AF_ALG socket.

The issue has been introduced in 12/03/2009. The weakness was disclosed 05/24/2012 (Website). The advisory is shared at github.com. This vulnerability is uniquely identified as CVE-2011-4081. The exploitability is told to be easy. An attack has to be approached locally. No form of authentication is needed for exploitation. Technical details are known, but no exploit is available.

The vulnerability was handled as a non-public zero-day exploit for at least 733 days. During that time the estimated underground price was around $0-$5k. The vulnerability scanner Nessus provides a plugin with the ID 57024 (USN-1287-1 : linux-ti-omap4 vulnerability), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Ubuntu Local Security Checks. The commercial vulnerability scanner Qualys is able to test this issue with plugin 350692 (Amazon Linux Security Advisory for kernel: ALAS-2012-055).

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the databases at X-Force (70972), Tenable (57024), SecurityFocus (BID 50366†) and Vulnerability Center (SBV-34153†). The entries VDB-4434, VDB-4553, VDB-4488 and VDB-4536 are pretty similar. If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

Type

Vendor

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.9
VulDB Meta Temp Score: 5.9

VulDB Base Score: 6.2
VulDB Temp Score: 6.2
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 5.5
NVD Vector: 🔍

CVSSv2info

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

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

NVD Base Score: 🔍

Exploitinginfo

Class: Null pointer dereference
CWE: CWE-476 / CWE-404
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: 57024
Nessus Name: USN-1287-1 : linux-ti-omap4 vulnerability
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Port: 🔍

OpenVAS ID: 881118
OpenVAS Name: CentOS Update for kernel CESA-2012:0350 centos6
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Patch: 7ed47b7d142ec99ad6880bbbec51e9f12b3af74c

Timelineinfo

12/03/2009 🔍
10/18/2011 +683 days 🔍
10/20/2011 +2 days 🔍
10/26/2011 +6 days 🔍
12/06/2011 +41 days 🔍
12/29/2011 +23 days 🔍
05/24/2012 +147 days 🔍
05/24/2012 +0 days 🔍
03/23/2015 +1033 days 🔍
12/02/2021 +2446 days 🔍

Sourcesinfo

Vendor: kernel.org

Advisory: USN-1287-1
Status: Not defined
Confirmation: 🔍

CVE: CVE-2011-4081 (🔍)
GCVE (CVE): GCVE-0-2011-4081
GCVE (VulDB): GCVE-100-60837

OVAL: 🔍

X-Force: 70972
SecurityFocus: 50366 - Linux Kernel GHASH Local Denial of Service Vulnerability
Vulnerability Center: 34153 - Linux Kernel 2.6.39.4 GHASH Algorithm Local DoS via a Crafted Application, Medium

See also: 🔍

Entryinfo

Created: 03/23/2015 16:50
Updated: 12/02/2021 08:45
Changes: 03/23/2015 16:50 (64), 04/09/2017 13:12 (10), 12/02/2021 08:38 (6), 12/02/2021 08:42 (11), 12/02/2021 08:45 (2)
Complete: 🔍
Cache ID: 216:85F:103

If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Discussion

No comments yet. Languages: en.

Please log in to comment.

◂ PreviousOverviewNext ▸

Want to know what is going to be exploited?

We predict KEV entries!