Linux Kernel 2.6.16.9 rfcomm_sock_getsockopt_old 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 was found in Linux Kernel 2.6.16.9. It has been rated as problematic. This affects the function rfcomm_sock_getsockopt_old. The manipulation leads to information disclosure. This vulnerability is documented as CVE-2011-2492. There is not any exploit available.

Detailsinfo

A vulnerability was found in Linux Kernel 2.6.16.9 (Operating System). It has been rated as problematic. This issue affects the function rfcomm_sock_getsockopt_old. 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 bluetooth subsystem in the Linux kernel before 3.0-rc4 does not properly initialize certain data structures, which allows local users to obtain potentially sensitive information from kernel memory via a crafted getsockopt system call, related to (1) the l2cap_sock_getsockopt_old function in net/bluetooth/l2cap_sock.c and (2) the rfcomm_sock_getsockopt_old function in net/bluetooth/rfcomm/sock.c.

The issue has been introduced in 03/20/2006. The weakness was released 07/28/2011 by Marek Kroemeke as Bug 703019 as confirmed bug report (Bugzilla). The advisory is shared at bugzilla.redhat.com. The identification of this vulnerability is CVE-2011-2492 since 06/15/2011. An attack has to be approached locally. 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 T1592 for this issue.

The vulnerability was handled as a non-public zero-day exploit for at least 1956 days. During that time the estimated underground price was around $0-$5k. The vulnerability scanner Nessus provides a plugin with the ID 83618 (SUSE SLES10 Security Update : kernel (SUSE-SU-2014:0536-1)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family SuSE Local Security Checks. The commercial vulnerability scanner Qualys is able to test this issue with plugin 166795 (SUSE Enterprise Linux Security Update for Linux Kernel (SUSE-SU-2014:0536-1)).

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 (68228), Tenable (83618), SecurityFocus (BID 48441†), SecurityTracker (ID 1025778†) and Vulnerability Center (SBV-32499†). Entries connected to this vulnerability are available at VDB-7908, VDB-63772, VDB-63770 and VDB-63769. Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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: 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: 83618
Nessus Name: SUSE SLES10 Security Update : kernel (SUSE-SU-2014:0536-1)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Port: 🔍

OpenVAS ID: 880545
OpenVAS Name: CentOS Update for kernel CESA-2011:0927 centos5 i386
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: 8d03e971cf403305217b8e62db3a2e5ad2d6263f

Timelineinfo

03/20/2006 🔍
06/09/2011 +1907 days 🔍
06/15/2011 +6 days 🔍
06/24/2011 +9 days 🔍
07/15/2011 +21 days 🔍
07/28/2011 +13 days 🔍
07/28/2011 +0 days 🔍
08/01/2011 +4 days 🔍
03/23/2015 +1330 days 🔍
05/20/2015 +58 days 🔍
11/15/2021 +2371 days 🔍

Sourcesinfo

Vendor: kernel.org

Advisory: Bug 703019
Researcher: Marek Kroemeke
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2011-2492 (🔍)
GCVE (CVE): GCVE-0-2011-2492
GCVE (VulDB): GCVE-100-58121

OVAL: 🔍
IAVM: 🔍

X-Force: 68228
SecurityFocus: 48441 - Linux Kernel Bluetooth 'l2cap_sock.c' and 'rfcomm/sock.c' Information Disclosure Vulnerability
SecurityTracker: 1025778 - Linux Kernel Bluetooth 'l2cap_conninfo' and 'rfcomm_conninfo' Initialization Flaw Lets Local Users Obtain Kernel Memory Contents
Vulnerability Center: 32499 - Linux Kernel Local Information Disclosure Vulnerability via a Crafted Getsockopt System Call, Medium

See also: 🔍

Entryinfo

Created: 03/23/2015 16:50
Updated: 11/15/2021 16:49
Changes: 03/23/2015 16:50 (70), 03/29/2017 09:12 (16), 11/15/2021 16:41 (4), 11/15/2021 16:49 (1)
Complete: 🔍
Cache ID: 216::103

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

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