Linux Kernel up to 4.8.12 Fragmented IPv6 Packet net/ipv6/icmp.c icmp6_send input validation

CVSS Meta Temp Score
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CTI Interest Score
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7.4$0-$5k0.00

Summaryinfo

A vulnerability was found in Linux Kernel up to 4.8.12 and classified as critical. This affects the function icmp6_send of the file net/ipv6/icmp.c of the component Fragmented IPv6 Packet Handler. Such manipulation leads to input validation. This vulnerability is documented as CVE-2016-9919. The attack can be executed remotely. There is not any exploit available. Restrictive firewalling should be applied.

Detailsinfo

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 databases at Tenable (96603) and SecurityFocus (BID 94824†). Entries connected to this vulnerability are available at VDB-93508 and VDB-93501. If you want to get best quality of vulnerability data, you may have to visit VulDB.

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CPE 2.3info

CPE 2.2info

CVSSv4info

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

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VulDB Base Score: 🔍
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Exploitinginfo

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

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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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: 🔍
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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 (🔍)
GCVE (CVE): GCVE-0-2016-9919
GCVE (VulDB): GCVE-100-93986
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: 🔍
Cache ID: 216::103

If you want to get best quality of vulnerability data, you may have to visit VulDB.

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