Linux Kernel 2.6.16.9 l2cap_config_req numeric error

CVSS Meta Temp Score
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CTI Interest Score
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9.6$0-$5k0.00

Summaryinfo

A vulnerability has been found in Linux Kernel 2.6.16.9 and classified as critical. This impacts the function l2cap_config_req. The manipulation leads to numeric error. This vulnerability is uniquely identified as CVE-2011-2497. No exploit exists.

Detailsinfo

A vulnerability was found in Linux Kernel 2.6.16.9 (Operating System) and classified as critical. This issue affects the function l2cap_config_req. The manipulation with an unknown input leads to a numeric error vulnerability. Using CWE to declare the problem leads to CWE-189. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

Integer underflow in the l2cap_config_req function in net/bluetooth/l2cap_core.c in the Linux kernel before 3.0 allows remote attackers to cause a denial of service (heap memory corruption) or possibly have unspecified other impact via a small command-size value within the command header of a Logical Link Control and Adaptation Protocol (L2CAP) configuration request, leading to a buffer overflow.

The issue has been introduced in 03/20/2006. The weakness was disclosed 08/29/2011 by Dan Rosenberg as Bug 716805 as not defined bug report (Bugzilla). The advisory is shared at bugzilla.redhat.com. The identification of this vulnerability is CVE-2011-2497 since 06/15/2011. The exploitation is known to be easy. The attack needs to be done within the local network. No form of authentication is needed for a successful exploitation. Technical details are known, but no exploit is available. The price for an exploit might be around USD $0-$5k at the moment (estimation calculated on 11/18/2021).

The vulnerability was handled as a non-public zero-day exploit for at least 1941 days. During that time the estimated underground price was around $25k-$100k. The vulnerability scanner Nessus provides a plugin with the ID 55583 (Fedora 15 : kernel-2.6.38.8-35.fc15 (2011-9130)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Fedora Local Security Checks. The commercial vulnerability scanner Qualys is able to test this issue with plugin 195236 (Ubuntu Security Notification for Linux-ec2 Vulnerabilities (USN-1239-1)).

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 (68259), Tenable (55583), SecurityFocus (BID 48472†), OSVDB (74679†) and Vulnerability Center (SBV-32039†). The entry VDB-58127 is pretty similar. If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 9.6
VulDB Meta Temp Score: 9.6

VulDB Base Score: 9.6
VulDB Temp Score: 9.6
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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

NVD Base Score: 🔍

Exploitinginfo

Class: Numeric error
CWE: CWE-189
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Partially

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 55583
Nessus Name: Fedora 15 : kernel-2.6.38.8-35.fc15 (2011-9130)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Port: 🔍

OpenVAS ID: 863447
OpenVAS Name: Fedora Update for kernel FEDORA-2011-11103
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: 7ac28817536797fd40e9646452183606f9e17f71

Timelineinfo

03/20/2006 🔍
06/15/2011 +1913 days 🔍
06/24/2011 +9 days 🔍
06/24/2011 +0 days 🔍
06/29/2011 +5 days 🔍
07/13/2011 +14 days 🔍
08/29/2011 +47 days 🔍
08/29/2011 +0 days 🔍
03/23/2015 +1302 days 🔍
11/18/2021 +2432 days 🔍

Sourcesinfo

Vendor: kernel.org

Advisory: Bug 716805
Researcher: Dan Rosenberg
Status: Not defined
Confirmation: 🔍

CVE: CVE-2011-2497 (🔍)
GCVE (CVE): GCVE-0-2011-2497
GCVE (VulDB): GCVE-100-58397

OVAL: 🔍

X-Force: 68259
SecurityFocus: 48472 - Linux kernel l2cap Remote Buffer Overflow Vulnerability
OSVDB: 74679
Vulnerability Center: 32039 - Linux Kernel 2.6 - 2.6.39-rc6 Remote Buffer Overflow via a Crafted \x27l2cap\x27 Request, Critical

See also: 🔍

Entryinfo

Created: 03/23/2015 16:50
Updated: 11/18/2021 12:53
Changes: 03/23/2015 16:50 (67), 03/24/2017 18:39 (12), 11/18/2021 12:44 (4), 11/18/2021 12:53 (1)
Complete: 🔍
Cache ID: 216:A63:103

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