Linux Kernel up to 2.6.16.6 Shared Memory mprotect access control

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-$5k0.00

Summaryinfo

A vulnerability was found in Linux Kernel up to 2.6.16.6. It has been rated as problematic. Affected is the function mprotect of the component Shared Memory. The manipulation leads to access control. This vulnerability is uniquely identified as CVE-2006-1524. No exploit exists. Upgrading the affected component is advised.

Detailsinfo

A vulnerability was found in Linux Kernel up to 2.6.16.6 (Operating System). It has been rated as problematic. This issue affects the function mprotect of the component Shared Memory. 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. The summary by CVE is:

madvise_remove in Linux kernel 2.6.16 up to 2.6.16.6 does not follow file and mmap restrictions, which allows local users to bypass IPC permissions and replace portions of readonly tmpfs files with zeroes, aka the MADV_REMOVE vulnerability. NOTE: this description was originally written in a way that combined two separate issues. The mprotect issue now has a separate name, CVE-2006-2071.

The bug was discovered 04/18/2006. The weakness was disclosed 04/19/2006 by Hugh Dickins (Website). The advisory is shared at kernel.org. The identification of this vulnerability is CVE-2006-1524 since 03/30/2006. The attack needs to approached within the local network. No form of authentication is needed for a successful exploitation. Technical details are known, but no exploit is available. MITRE ATT&CK project uses the attack technique T1068 for this issue.

It is declared as proof-of-concept. The vulnerability was handled as a non-public zero-day exploit for at least 30 days. During that time the estimated underground price was around $5k-$25k. The vulnerability scanner Nessus provides a plugin with the ID 22639 (Debian DSA-1097-1 : kernel-source-2.4.27 - several vulnerabilities), 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.

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 months after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at X-Force (25870), Tenable (22639), SecurityFocus (BID 17587†), OSVDB (24714†) and Secunia (SA19664†). The entries VDB-2098, VDB-2099, VDB-29944 and VDB-29314 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: 5.4
VulDB Meta Temp Score: 4.9

VulDB Base Score: 5.4
VulDB Temp Score: 4.9
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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

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

NVD Base Score: 🔍

Exploitinginfo

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

Physical: Partially
Local: Yes
Remote: Partially

Availability: 🔍
Status: Proof-of-Concept

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-DayUnlockUnlockUnlockUnlock
TodayUnlockUnlockUnlockUnlock

Nessus ID: 22639
Nessus Name: Debian DSA-1097-1 : kernel-source-2.4.27 - several vulnerabilities
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 56956
OpenVAS Name: Debian Security Advisory DSA 1097-1 (kernel-source-2.4.27)
OpenVAS File: 🔍
OpenVAS Family: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

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

Patch: kernel.org

Timelineinfo

03/20/2006 🔍
03/30/2006 +10 days 🔍
04/18/2006 +19 days 🔍
04/18/2006 +0 days 🔍
04/18/2006 +0 days 🔍
04/19/2006 +1 days 🔍
04/19/2006 +0 days 🔍
04/19/2006 +0 days 🔍
04/19/2006 +0 days 🔍
04/25/2006 +5 days 🔍
04/26/2006 +1 days 🔍
06/14/2006 +49 days 🔍
10/14/2006 +122 days 🔍
06/17/2019 +4629 days 🔍

Sourcesinfo

Vendor: kernel.org

Advisory: kernel.org
Researcher: Hugh Dickins
Status: Not defined
Confirmation: 🔍

CVE: CVE-2006-1524 (🔍)
GCVE (CVE): GCVE-0-2006-1524
GCVE (VulDB): GCVE-100-2177
X-Force: 25870 - Linux kernel madvise_remove security bypass, Medium Risk
SecurityFocus: 17587 - Linux Kernel Shared Memory Security Restriction Bypass Vulnerabilities
Secunia: 19664 - Linux Kernel Shared Memory Restrictions Bypass, Less Critical
OSVDB: 24714 - Linux Kernel madvise_remove IPC Permission Bypass
Vulnerability Center: 11246 - Linux Kernel before 2.6.16.6 Local Write Access to Readonly Files (\, Low
Vupen: ADV-2006-1391

See also: 🔍

Entryinfo

Created: 04/26/2006 13:55
Updated: 06/17/2019 07:31
Changes: 04/26/2006 13:55 (96), 06/17/2019 07:31 (3)
Complete: 🔍
Cache ID: 216:876:103

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Discussion

No comments yet. Languages: en.

Please log in to comment.

◂ PreviousOverviewNext ▸

Do you want to use VulDB in your project?

Use the official API to access entries easily!