CVSS Meta Temp Score CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.	Current Exploit Price (≈) Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.	CTI Interest Score Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
7.4	$0-$5k	0.00

A vulnerability was found in Linux Kernel up to 4.8.12 (Operating System). It has been rated as critical. Affected by this issue is the function icmp6_send of the file net/ipv6/icmp.c of the component Fragmented IPv6 Packet Handler. The manipulation with an unknown input leads to a input validation vulnerability. Using CWE to declare the problem leads to CWE-20. The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly. Impacted is availability. CVE summarizes:

The icmp6_send function in net/ipv6/icmp.c in the Linux kernel through 4.8.12 omits a certain check of the dst data structure, which allows remote attackers to cause a denial of service (panic) via a fragmented IPv6 packet.

The bug was discovered 12/08/2016. The weakness was released 12/08/2016 as confirmed git commit (GIT Repository). The advisory is available at git.kernel.org. This vulnerability is handled as CVE-2016-9919 since 12/08/2016. The exploitation is known to be easy. The attack may be launched remotely. No form of authentication is required for exploitation. Technical details are known, but there is no available exploit. The structure of the vulnerability defines a possible price range of USD $0-$5k at the moment (estimation calculated on 10/05/2022).

The vulnerability scanner Nessus provides a plugin with the ID 96603 (SUSE SLED12 / SLES12 Security Update : kernel (SUSE-SU-2017:0181-1)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family SuSE Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 169492 (SUSE Enterprise Linux Security Update for the Linux Kernel (SUSE-SU-2017:0181-1)).

Applying a patch is able to eliminate this problem. The bugfix is ready for download at git.kernel.org.Addressing this vulnerability is possible by firewalling IPv6. The best possible mitigation is suggested to be applying a restrictive firewalling. A possible mitigation has been published 2 months after the disclosure of the vulnerability.

The vulnerability is also documented in the vulnerability database at Tenable (96603). Entries connected to this vulnerability are available at 93508 and 93501.

Productinfo

Type

• Operating System

Vendor

• Linux

Name

• Kernel

Version

• 4.8.0
• 4.8.1
• 4.8.2
• 4.8.3
• 4.8.4
• 4.8.5
• 4.8.6
• 4.8.7
• 4.8.8
• 4.8.9
• 4.8.10
• 4.8.11
• 4.8.12

License

• open-source

CPE 2.3info

• 🔍
• 🔍
• 🔍

CPE 2.2info

• 🔍
• 🔍
• 🔍

CVSSv4info

VulDB CVSS-B Score: 🔍
VulDB CVSS-BT Score: 🔍
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.5
VulDB Meta Temp Score: 7.4

VulDB Base Score: 7.5
VulDB Temp Score: 7.3
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.5
NVD Vector: 🔍

CVSSv2info

AV	AC	Au	C	I	A
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳

Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
unlock	unlock	unlock	unlock	unlock	unlock
unlock	unlock	unlock	unlock	unlock	unlock
unlock	unlock	unlock	unlock	unlock	unlock

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

NVD Base Score: 🔍

Exploitinginfo

Class: Input validation
CWE: CWE-20
CAPEC: 🔍
ATT&CK: 🔍

Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-Day	unlock	unlock	unlock	unlock
Today	unlock	unlock	unlock	unlock

Nessus ID: 96603
Nessus Name: SUSE SLED12 / SLES12 Security Update : kernel (SUSE-SU-2017:0181-1)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 850584
OpenVAS Name: SuSE Update for the openSUSE-SU-2017:0456-1 (Linux Kernel)
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Firewall
Status: 🔍

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

Patch: git.kernel.org
Firewalling: 🔍

Timelineinfo

12/08/2016 🔍
12/08/2016 +0 days 🔍
12/08/2016 +0 days 🔍
12/08/2016 +0 days 🔍
12/08/2016 +0 days 🔍
12/09/2016 +1 days 🔍
01/17/2017 +39 days 🔍
01/18/2017 +1 days 🔍
10/05/2022 +2086 days 🔍

Sourcesinfo

Vendor: kernel.org

Advisory: 79dc7e3f1cd323be4c81aa1a94faa1b3ed987fb2
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2016-9919 (🔍)
SecurityFocus: 94824 - Linux Kernel 'net/ipv6/icmp.c' Denial of Service Vulnerability

See also: 🔍

Entryinfo

Created: 12/09/2016 07:49
Updated: 10/05/2022 08:53
Changes: 12/09/2016 07:49 (81), 08/24/2019 12:37 (6), 10/05/2022 08:53 (4)
Complete: 🔍

Discussion

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