Linux Kernel 2.6.30/2.6.30.1/2.6.30.2/2.6.30.4 mm_for_maps information disclosure

CVSS Meta Temp Score
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CTI Interest Score
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3.8$0-$5k0.00

Summaryinfo

A vulnerability described as problematic has been identified in Linux Kernel 2.6.30/2.6.30.1/2.6.30.2/2.6.30.4. This impacts the function mm_for_maps. Executing a manipulation can lead to information disclosure. This vulnerability is tracked as CVE-2009-2691. No exploit exists.

Detailsinfo

A vulnerability has been found in Linux Kernel 2.6.30/2.6.30.1/2.6.30.2/2.6.30.4 (Operating System) and classified as problematic. This vulnerability affects the function mm_for_maps. The manipulation with an unknown input leads to a information disclosure vulnerability. The CWE definition for the vulnerability is CWE-200. The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information. As an impact it is known to affect confidentiality. CVE summarizes:

The mm_for_maps function in fs/proc/base.c in the Linux kernel 2.6.30.4 and earlier allows local users to read (1) maps and (2) smaps files under proc/ via vectors related to ELF loading, a setuid process, and a race condition.

The issue has been introduced in 06/09/2009. The weakness was disclosed 08/14/2009 by Kees Cook (Website). The advisory is shared for download at marc.info. This vulnerability was named CVE-2009-2691 since 08/05/2009. The exploitation appears to be easy. The attack needs to be approached locally. No form of authentication is required for a successful exploitation. There are known technical details, but no exploit is available. The MITRE ATT&CK project declares the attack technique as T1592.

It is declared as proof-of-concept. The vulnerability was handled as a non-public zero-day exploit for at least 66 days. During that time the estimated underground price was around $0-$5k. The vulnerability scanner Nessus provides a plugin with the ID 44951 (Debian DSA-2005-1 : linux-2.6.24 - privilege escalation/denial of service/sensitive memory leak), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Debian Local Security Checks. The commercial vulnerability scanner Qualys is able to test this issue with plugin 175085 (Debian Security Update for Linux-2.6.24 (DSA-2005)).

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 (52401), Tenable (44951), SecurityFocus (BID 36019†), Secunia (SA36265†) and Vulnerability Center (SBV-24978†). The entry VDB-49433 is pretty similar. VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 4.0
VulDB Meta Temp Score: 3.8

VulDB Base Score: 4.0
VulDB Temp Score: 3.8
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: Information disclosure
CWE: CWE-200 / CWE-284 / CWE-266
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: No

Availability: 🔍
Status: Proof-of-Concept

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 44951
Nessus Name: Debian DSA-2005-1 : linux-2.6.24 - privilege escalation/denial of service/sensitive memory leak
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Port: 🔍

OpenVAS ID: 64736
OpenVAS Name: Fedora Core 11 FEDORA-2009-9044 (kernel)
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: 🔍

Timelineinfo

06/09/2009 🔍
08/05/2009 +57 days 🔍
08/11/2009 +6 days 🔍
08/11/2009 +0 days 🔍
08/11/2009 +0 days 🔍
08/14/2009 +3 days 🔍
08/14/2009 +0 days 🔍
03/02/2010 +200 days 🔍
03/09/2010 +7 days 🔍
03/18/2015 +1835 days 🔍
08/20/2021 +2347 days 🔍

Sourcesinfo

Vendor: kernel.org

Advisory: marc.info
Researcher: Kees Cook
Status: Not defined
Confirmation: 🔍

CVE: CVE-2009-2691 (🔍)
GCVE (CVE): GCVE-0-2009-2691
GCVE (VulDB): GCVE-100-49432

OVAL: 🔍

X-Force: 52401
SecurityFocus: 36019 - Linux Kernel 'fs/proc/base.c' Local Information Disclosure Vulnerability
Secunia: 36265 - Linux Kernel "mm_for_maps()" Information Disclosure, Not Critical
Vulnerability Center: 24978 - Linux Kernel <= 2.6.30.4 Vulnerability Allows Local Attackers to Read Maps and Smaps Files, Medium
Vupen: ADV-2009-2246

See also: 🔍

Entryinfo

Created: 03/18/2015 15:15
Updated: 08/20/2021 07:27
Changes: 03/18/2015 15:15 (66), 02/21/2017 17:26 (15), 08/20/2021 07:27 (3)
Complete: 🔍
Cache ID: 216::103

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