Linux Kernel up to 2.6.38.8 tpm_open information disclosure

CVSS Meta Temp Score
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CTI Interest Score
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4.0$0-$5k0.00

Summaryinfo

A vulnerability classified as problematic has been found in Linux Kernel up to 2.6.38.8. The affected element is the function tpm_open. The manipulation leads to information disclosure. This vulnerability is uniquely identified as CVE-2011-1160. No exploit exists.

Detailsinfo

A vulnerability, which was classified as problematic, has been found in Linux Kernel up to 2.6.38.8 (Operating System). This issue affects the function tpm_open. The manipulation with an unknown input leads to a information disclosure vulnerability. Using CWE to declare the problem leads to CWE-200. The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information. Impacted is confidentiality. The summary by CVE is:

The tpm_open function in drivers/char/tpm/tpm.c in the Linux kernel before 2.6.39 does not initialize a certain buffer, which allows local users to obtain potentially sensitive information from kernel memory via unspecified vectors.

The issue has been introduced in 03/14/2011. The weakness was disclosed 06/21/2012 (Website). It is possible to read the advisory at github.com. The identification of this vulnerability is CVE-2011-1160. The exploitation is known to be easy. Attacking locally is a requirement. No form of authentication is needed for a successful exploitation. Technical details of the vulnerability are known, but there is no available exploit. The attack technique deployed by this issue is T1592 according to MITRE ATT&CK.

The vulnerability was handled as a non-public zero-day exploit for at least 465 days. During that time the estimated underground price was around $0-$5k. The vulnerability scanner Nessus provides a plugin with the ID 68364 (Oracle Linux 6 : kernel (ELSA-2011-1350)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Oracle Linux Local Security Checks. The commercial vulnerability scanner Qualys is able to test this issue with plugin 165562 (SUSE Enterprise Linux Security Update Linux Kernel (SUSE-SA:2011:026)).

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 (66093), Tenable (68364), SecurityFocus (BID 46866†) and Vulnerability Center (SBV-31976†). The entries VDB-52270, VDB-56656, VDB-56655 and VDB-56654 are pretty similar. Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

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Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

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

VulDB Base Score: 4.0
VulDB Temp Score: 4.0
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: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 68364
Nessus Name: Oracle Linux 6 : kernel (ELSA-2011-1350)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Port: 🔍

OpenVAS ID: 69970
OpenVAS Name: Debian Security Advisory DSA 2264-1 (linux-2.6)
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: 1309d7afbed112f0e8e90be9af975550caa0076b

Timelineinfo

03/03/2011 🔍
03/14/2011 +11 days 🔍
03/14/2011 +0 days 🔍
03/14/2011 +0 days 🔍
06/22/2011 +100 days 🔍
06/21/2012 +365 days 🔍
06/21/2012 +0 days 🔍
07/12/2013 +386 days 🔍
03/23/2015 +619 days 🔍
12/05/2021 +2449 days 🔍

Sourcesinfo

Vendor: kernel.org

Advisory: RHSA-2011:1350
Status: Not defined
Confirmation: 🔍

CVE: CVE-2011-1160 (🔍)
GCVE (CVE): GCVE-0-2011-1160
GCVE (VulDB): GCVE-100-61067

OVAL: 🔍

X-Force: 66093
SecurityFocus: 46866 - Linux Kernel 'drivers/char/tpm/tpm.c' Information Disclosure Vulnerability
Vulnerability Center: 31976 - Linux Kernel before 2.6.37-rc1 Local Information Disclosure Vulnerability, Medium

See also: 🔍

Entryinfo

Created: 03/23/2015 16:50
Updated: 12/05/2021 09:13
Changes: 03/23/2015 16:50 (64), 03/24/2017 16:10 (9), 12/05/2021 09:13 (9)
Complete: 🔍
Cache ID: 216:A0A:103

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