Linux Kernel nf_nat_redirect_ipv4 null pointer dereference

CVSS Meta Temp Score
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CTI Interest Score
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9.1$0-$5k0.00

Summaryinfo

A vulnerability described as problematic has been identified in Linux Kernel. This issue affects the function nf_nat_redirect_ipv4. Executing a manipulation can lead to null pointer dereference. This vulnerability is tracked as CVE-2015-8787. The attack can be launched remotely. No exploit exists. A patch should be applied to remediate this issue.

Detailsinfo

A vulnerability classified as critical was found in Linux Kernel (Operating System) (unknown version). This vulnerability affects the function nf_nat_redirect_ipv4. The manipulation with an unknown input leads to a null pointer dereference vulnerability. The CWE definition for the vulnerability is 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. As an impact it is known to affect confidentiality, integrity, and availability.

The weakness was disclosed 01/27/2016 as confirmed mailinglist post (oss-sec). The advisory is available at seclists.org. This vulnerability was named CVE-2015-8787 since 01/27/2016. The exploitation appears to be easy. Local access is required to approach this attack. No form of authentication is required for a successful exploitation. Technical details are known, but there is no available exploit.

The vulnerability scanner Nessus provides a plugin with the ID 88522 (Ubuntu 15.04 : linux vulnerabilities (USN-2889-1)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Ubuntu Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 169316 (OpenSuSE Security Update for the Linux Kernel (openSUSE-SU-2016:1008-1)).

Applying a patch is able to eliminate this problem. The bugfix is ready for download at git.kernel.org. A possible mitigation has been published 5 days after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at X-Force (110242), Tenable (88522), SecurityFocus (BID 82503†) and Vulnerability Center (SBV-56384†). The entry VDB-78721 is pretty similar. If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 9.8
VulDB Meta Temp Score: 9.1

VulDB Base Score: 9.8
VulDB Temp Score: 8.5
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 9.8
NVD Vector: 🔍

CVSSv2info

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VulDB Base Score: 🔍
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Exploitinginfo

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

Physical: Partially
Local: Yes
Remote: Yes

Availability: 🔍
Status: Unproven

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 88522
Nessus Name: Ubuntu 15.04 : linux vulnerabilities (USN-2889-1)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 867773
OpenVAS Name: Fedora Update for kernel FEDORA-2016-5
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

Interest: 🔍
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Countermeasuresinfo

Recommended: Patch
Status: 🔍

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

Patch: git.kernel.org

Timelineinfo

12/01/2015 🔍
01/27/2016 +56 days 🔍
01/27/2016 +0 days 🔍
01/29/2016 +2 days 🔍
01/31/2016 +2 days 🔍
02/01/2016 +1 days 🔍
02/02/2016 +1 days 🔍
02/03/2016 +1 days 🔍
02/07/2016 +3 days 🔍
07/06/2022 +2341 days 🔍

Sourcesinfo

Vendor: kernel.org

Advisory: USN-2889-1
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2015-8787 (🔍)
GCVE (CVE): GCVE-0-2015-8787
GCVE (VulDB): GCVE-100-80722
X-Force: 110242 - Linux Kernel nf_nat_redirect_ipv4 function denial of service
SecurityFocus: 82503 - Linux Kernel CVE-2015-8787 Incomplete Fix Null Pointer Deference Denial of Service Vulnerability
Vulnerability Center: 56384 - Linux Kernel 4.4 and Earlier Remote DoS Vulnerability due to a Null Pointer Dereference Issue, High

See also: 🔍

Entryinfo

Created: 01/29/2016 10:46
Updated: 07/06/2022 14:48
Changes: 01/29/2016 10:46 (67), 07/23/2018 07:49 (22), 07/06/2022 14:48 (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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