Linux Kernel up to 4.11.1 IPv6 Fragmentation nexthdr out-of-bounds

CVSS Meta Temp Score
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5.5$0-$5k0.00

Summaryinfo

A vulnerability has been found in Linux Kernel up to 4.11.1 and classified as problematic. The affected element is an unknown function of the component IPv6 Fragmentation Handler. This manipulation of the argument nexthdr as part of System Calls causes out-of-bounds. This vulnerability appears as CVE-2017-9074. The attack requires local access. There is no available exploit. It is recommended to apply a patch to fix this issue.

Detailsinfo

A vulnerability classified as problematic was found in Linux Kernel up to 4.11.1 (Operating System). Affected by this vulnerability is an unknown part of the component IPv6 Fragmentation Handler. The manipulation of the argument nexthdr as part of a System Calls leads to a out-of-bounds vulnerability. The CWE definition for the vulnerability is CWE-125. The product reads data past the end, or before the beginning, of the intended buffer. As an impact it is known to affect availability. The summary by CVE is:

The IPv6 fragmentation implementation in the Linux kernel through 4.11.1 does not consider that the nexthdr field may be associated with an invalid option, which allows local users to cause a denial of service (out-of-bounds read and BUG) or possibly have unspecified other impact via crafted socket and send system calls.

The bug was discovered 05/19/2017. The weakness was presented 05/19/2017 by Andrey Konovalov as confirmed git commit (GIT Repository). It is possible to read the advisory at git.kernel.org. This vulnerability is known as CVE-2017-9074 since 05/19/2017. Attacking locally is a requirement. A single authentication is necessary for exploitation. Technical details of the vulnerability are known, but there is no available exploit.

The vulnerability scanner Nessus provides a plugin with the ID 100435 (Fedora 25 : kernel (2017-273b67d5ee)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Fedora Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 276660 (Fedora Security Update for kernel (FEDORA-2017-273b67d5ee)).

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 6 days after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at Tenable (100435) and SecurityFocus (BID 98577†). See VDB-101073, VDB-101471, VDB-101504 and VDB-101505 for similar entries. Be aware that VulDB is the high quality source for vulnerability data.

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
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CVSSv3info

VulDB Meta Base Score: 5.5
VulDB Meta Temp Score: 5.5

VulDB Base Score: 3.3
VulDB Temp Score: 3.2
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.8
NVD Vector: 🔍

CVSSv2info

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VulDB Base Score: 🔍
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Exploitinginfo

Class: Out-of-bounds
CWE: CWE-125 / CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: No

Availability: 🔍
Status: Not defined

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EPSS Percentile: 🔍

Price Prediction: 🔍
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Nessus ID: 100435
Nessus Name: Fedora 25 : kernel (2017-273b67d5ee)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 867773
OpenVAS Name: Fedora Update for kernel FEDORA-2017-85744f8aa9
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

Interest: 🔍
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Countermeasuresinfo

Recommended: Patch
Status: 🔍

Reaction Time: 🔍
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Patch: git.kernel.org

Timelineinfo

05/19/2017 🔍
05/19/2017 +0 days 🔍
05/19/2017 +0 days 🔍
05/19/2017 +0 days 🔍
05/19/2017 +0 days 🔍
05/19/2017 +0 days 🔍
05/25/2017 +6 days 🔍
05/26/2017 +1 days 🔍
12/06/2022 +2020 days 🔍

Sourcesinfo

Vendor: kernel.org

Advisory: FEDORA-2017-273b67d5ee
Researcher: Andrey Konovalov
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2017-9074 (🔍)
GCVE (CVE): GCVE-0-2017-9074
GCVE (VulDB): GCVE-100-101503

OVAL: 🔍

SecurityFocus: 98577 - Linux kernel CVE-2017-9074 Local Denial of Service Vulnerability
OSVDB: - CVE-2017-9074 - Linux - Out-of-Bounds Read Issue

See also: 🔍

Entryinfo

Created: 05/19/2017 15:41
Updated: 12/06/2022 16:53
Changes: 05/19/2017 15:41 (81), 09/30/2020 13:00 (7), 12/06/2022 16:46 (4), 12/06/2022 16:53 (1)
Complete: 🔍
Cache ID: 216::103

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