Linux Kernel up to 4.3.3 Networking null pointer dereference

CVSS Meta Temp Score
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CTI Interest Score
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6.8$0-$5k0.00

Summaryinfo

A vulnerability, which was classified as problematic, was found in Linux Kernel up to 4.3.3. This affects an unknown part of the component Networking. Such manipulation leads to null pointer dereference. This vulnerability is listed as CVE-2015-8543. The attack must be carried out locally. There is no available exploit. You should upgrade the affected component.

Detailsinfo

A vulnerability was found in Linux Kernel up to 4.3.3 (Operating System). It has been rated as critical. Affected by this issue is some unknown functionality of the component Networking. The manipulation with an unknown input leads to a null pointer dereference vulnerability. Using CWE to declare the problem leads to 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. Impacted is confidentiality, integrity, and availability. CVE summarizes:

The networking implementation in the Linux kernel through 4.3.3, as used in Android and other products, does not validate protocol identifiers for certain protocol families, which allows local users to cause a denial of service (NULL function pointer dereference and system crash) or possibly gain privileges by leveraging CLONE_NEWUSER support to execute a crafted SOCK_RAW application.

The weakness was presented 12/28/2015 (Website). The advisory is shared for download at github.com. This vulnerability is handled as CVE-2015-8543 since 12/11/2015. The attack needs to be approached locally. No form of authentication is required for exploitation. There are neither technical details nor an exploit publicly available.

The vulnerability scanner Nessus provides a plugin with the ID 87738 (Debian DLA-378-1 : linux-2.6 security update), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Debian Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 168771 (SUSE Enterprise Linux Security update for the Linux Kernel (SUSE-SU-2016:1203-1)).

Upgrading eliminates this vulnerability. A possible mitigation has been published 2 weeks after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at Tenable (87738), SecurityFocus (BID 79698†), SecurityTracker (ID 1034892†) and Vulnerability Center (SBV-55427†). See VDB-8569, VDB-78541, VDB-79223 and VDB-79228 for similar entries. VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

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Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.0
VulDB Meta Temp Score: 6.8

VulDB Base Score: 7.0
VulDB Temp Score: 6.7
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.0
NVD Vector: 🔍

CVSSv2info

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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Null pointer dereference
CWE: CWE-476 / CWE-404
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: 87738
Nessus Name: Debian DLA-378-1 : linux-2.6 security update
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 703426
OpenVAS Name: Debian Security Advisory DSA 3426-1 (linux - security update)
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

Reaction Time: 🔍
0-Day Time: 🔍
Exposure Time: 🔍

Patch: git.kernel.org

Timelineinfo

12/10/2015 🔍
12/11/2015 +1 days 🔍
12/23/2015 +12 days 🔍
12/28/2015 +5 days 🔍
12/28/2015 +0 days 🔍
12/29/2015 +1 days 🔍
12/29/2015 +0 days 🔍
01/05/2016 +7 days 🔍
01/06/2016 +1 days 🔍
01/30/2016 +24 days 🔍
07/01/2022 +2344 days 🔍

Sourcesinfo

Vendor: kernel.org

Advisory: USN-2886-1
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2015-8543 (🔍)
GCVE (CVE): GCVE-0-2015-8543
GCVE (VulDB): GCVE-100-79928

OVAL: 🔍

SecurityFocus: 79698 - Google Android Kernel CVE-2015-8543 Null Pointer Deference Local Denial of Service Vulnerability
SecurityTracker: 1034892
Vulnerability Center: 55427 - Linux Kernel <=4.3.3 Local DoS or Code Execution via IPv6 Connection, Medium

See also: 🔍

Entryinfo

Created: 12/29/2015 13:22
Updated: 07/01/2022 16:19
Changes: 12/29/2015 13:22 (73), 07/11/2018 04:13 (18), 07/01/2022 16:12 (4), 07/01/2022 16:19 (1)
Complete: 🔍
Cache ID: 216::103

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