Linux Kernel 2.6.16.9 br_mdb_ip_get null pointer dereference

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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7.5$0-$5k0.00

A vulnerability, which was classified as critical, was found in Linux Kernel 2.6.16.9 (Operating System). This affects the function br_mdb_ip_get. The manipulation with an unknown input leads to a null pointer dereference vulnerability. CWE is classifying the issue as CWE-476. A NULL pointer dereference occurs when the application dereferences a pointer that it expects to be valid, but is NULL, typically causing a crash or exit. This is going to have an impact on availability. The summary by CVE is:

The br_mdb_ip_get function in net/bridge/br_multicast.c in the Linux kernel before 2.6.35-rc5 allows remote attackers to cause a denial of service (NULL pointer dereference and system crash) via an IGMP packet, related to lack of a multicast table.

The issue has been introduced in 03/20/2006. The weakness was released 02/18/2011 (Website). The advisory is shared at spinics.net. This vulnerability is uniquely identified as CVE-2011-0709. The exploitability is told to be easy. It is possible to initiate the attack remotely. No form of authentication is needed for 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 10/17/2021).

The vulnerability was handled as a non-public zero-day exploit for at least 1796 days. During that time the estimated underground price was around $5k-$25k. The vulnerability scanner Nessus provides a plugin with the ID 65101 (Ubuntu 10.04 LTS : linux-lts-backport-maverick vulnerabilities (USN-1083-1)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Ubuntu Local Security Checks.

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 vulnerability database at Tenable (65101). Entries connected to this vulnerability are available at 56544, 56543, 56542 and 56540.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB CVSS-B Score: 🔍
VulDB CVSS-BT Score: 🔍
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CVSSv3info

VulDB Meta Base Score: 7.5
VulDB Meta Temp Score: 7.5

VulDB Base Score: 7.5
VulDB Temp Score: 7.5
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.5
NVD Vector: 🔍

CVSSv2info

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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
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NVD Base Score: 🔍

Exploitinginfo

Class: Null pointer dereference
CWE: CWE-476 / CWE-404
ATT&CK: Unknown

Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 65101
Nessus Name: Ubuntu 10.04 LTS : linux-lts-backport-maverick vulnerabilities (USN-1083-1)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍

Threat Intelligenceinfo

Interest: 🔍
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Active APT Groups: 🔍

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Patch: 7f285fa78d4b81b8458f05e77fb6b46245121b4e

Timelineinfo

03/20/2006 🔍
07/06/2010 +1569 days 🔍
07/06/2010 +0 days 🔍
07/11/2010 +5 days 🔍
01/31/2011 +203 days 🔍
02/18/2011 +18 days 🔍
02/18/2011 +0 days 🔍
03/20/2015 +1491 days 🔍
10/17/2021 +2403 days 🔍

Sourcesinfo

Vendor: kernel.org

Advisory: USN-1083-1
Status: Not defined
Confirmation: 🔍

CVE: CVE-2011-0709 (🔍)
OVAL: 🔍

Vulnerability Center: 26345 - Linux kernel 2.6.35-rc1 \x27br_mdb_ip_get\x27 Function Remote DoS Vulnerability via a Crafted IGMP Packet, High
SecurityFocus: 41432 - Linux Kernel 'br_multicast.c' Bridge NULL Pointer Dereference Denial of Service Vulnerability

See also: 🔍

Entryinfo

Created: 03/20/2015 16:16
Updated: 10/17/2021 13:27
Changes: 03/20/2015 16:16 (53), 02/28/2017 11:40 (11), 10/17/2021 13:16 (6), 10/17/2021 13:21 (9), 10/17/2021 13:27 (2)
Complete: 🔍

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