Linux Kernel up to 2.6.20.1 posix-timers.c sys_timer_create memory allocation

CVSS Meta Temp Score
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CTI Interest Score
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5.9$0-$5k0.00

Summaryinfo

A vulnerability labeled as problematic has been found in Linux Kernel. This vulnerability affects the function sys_timer_create of the file posix-timers.c. Such manipulation leads to memory allocation. This vulnerability is uniquely identified as CVE-2006-7051. Moreover, an exploit is present.

Detailsinfo

A vulnerability, which was classified as problematic, has been found in Linux Kernel (Operating System). Affected by this issue is the function sys_timer_create of the file posix-timers.c. The manipulation with an unknown input leads to a memory allocation vulnerability. Using CWE to declare the problem leads to CWE-789. The product allocates memory based on an untrusted, large size value, but it does not ensure that the size is within expected limits, allowing arbitrary amounts of memory to be allocated. Impacted is availability. CVE summarizes:

The sys_timer_create function in posix-timers.c for Linux kernel 2.6.x allows local users to cause a denial of service (memory consumption) and possibly bypass memory limits or cause other processes to be killed by creating a large number of posix timers, which are allocated in kernel memory but are not treated as part of the process memory.

The issue has been introduced in 09/20/2006. The weakness was disclosed 04/04/2006 (Website). The advisory is shared for download at xforce.iss.net. This vulnerability is handled as CVE-2006-7051 since 02/23/2007. The exploitation is known to be easy. The attack needs to be approached locally. No form of authentication is required for exploitation. Technical details as well as a public exploit are known.

The exploit is available at exploit-db.com. It is declared as proof-of-concept.

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 (25712), Exploit-DB (1657) and OSVDB (40963†). VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

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Version

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Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.2
VulDB Meta Temp Score: 5.9

VulDB Base Score: 6.2
VulDB Temp Score: 5.9
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Memory allocation
CWE: CWE-789 / CWE-400 / CWE-404
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: No

Availability: 🔍
Access: Public
Status: Proof-of-Concept
Download: 🔍

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Exploit-DB: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

04/04/2006 🔍
04/15/2006 +11 days 🔍
09/20/2006 +157 days 🔍
02/23/2007 +156 days 🔍
02/23/2007 +0 days 🔍
03/13/2015 +2940 days 🔍
06/22/2024 +3389 days 🔍

Sourcesinfo

Vendor: kernel.org

Advisory: xforce.iss.net
Status: Not defined

CVE: CVE-2006-7051 (🔍)
GCVE (CVE): GCVE-0-2006-7051
GCVE (VulDB): GCVE-100-35192
X-Force: 25712
OSVDB: 40963 - Linux Kernel linux/kernel/posix-timers.c sys_timer_create() Function Memory Consumption DoS

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

Entryinfo

Created: 03/13/2015 12:16
Updated: 06/22/2024 12:26
Changes: 03/13/2015 12:16 (53), 04/13/2019 21:01 (4), 06/22/2024 12:26 (17)
Complete: 🔍
Cache ID: 216::103

VulDB is the best source for vulnerability data and more expert information about this specific topic.

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