Linux Kernel IPv6 net/ipv6/ip6_gre.c ip6gre_err out-of-bounds

CVSS Meta Temp Score
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CTI Interest Score
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7.8$0-$5k0.00

Summaryinfo

A vulnerability, which was classified as critical, was found in Linux Kernel. This issue affects the function ip6gre_err of the file net/ipv6/ip6_gre.c of the component IPv6 Handler. Such manipulation leads to out-of-bounds. This vulnerability is referenced as CVE-2017-5897. It is possible to launch the attack remotely. No exploit is available. It is advisable to implement a patch to correct this issue.

Detailsinfo

A vulnerability was found in Linux Kernel (Operating System) (affected version not known) and classified as critical. Affected by this issue is the function ip6gre_err of the file net/ipv6/ip6_gre.c of the component IPv6 Handler. The manipulation with an unknown input leads to a out-of-bounds vulnerability. Using CWE to declare the problem leads to CWE-125. The product reads data past the end, or before the beginning, of the intended buffer. Impacted is confidentiality, and availability. CVE summarizes:

The ip6gre_err function in net/ipv6/ip6_gre.c in the Linux kernel allows remote attackers to have unspecified impact via vectors involving GRE flags in an IPv6 packet, which trigger an out-of-bounds access.

The bug was discovered 02/08/2017. The weakness was published 02/08/2017 by Andrey Konovalov as confirmed git commit (GIT Repository). The advisory is shared for download at git.kernel.org. This vulnerability is handled as CVE-2017-5897 since 02/07/2017. The attack may be launched remotely. No form of authentication is required for exploitation. There are known technical details, but no exploit is available.

The vulnerability scanner Nessus provides a plugin with the ID 97557 (Amazon Linux AMI : kernel (ALAS-2017-805)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Amazon Linux Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 351446 (Amazon Linux Security Advisory for kernel: ALAC2012-2018-012).

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 4 weeks after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at Tenable (97557), SecurityFocus (BID 96037†) and SecurityTracker (ID 1037794†). Similar entries are available at VDB-96555, VDB-96560, VDB-96561 and VDB-96562. Once again VulDB remains the best source for vulnerability data.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 8.1
VulDB Meta Temp Score: 8.0

VulDB Base Score: 6.5
VulDB Temp Score: 6.2
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 9.8
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: Out-of-bounds
CWE: CWE-125 / CWE-119
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: 97557
Nessus Name: Amazon Linux AMI : kernel (ALAS-2017-805)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 900211
OpenVAS Name: SuSE Update for Linux Kernel openSUSE-SU-2017:0547-1 (Linux Kernel)
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Patch
Status: 🔍

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

Patch: git.kernel.org

Timelineinfo

02/06/2017 🔍
02/07/2017 +1 days 🔍
02/08/2017 +1 days 🔍
02/08/2017 +0 days 🔍
02/08/2017 +0 days 🔍
02/15/2017 +7 days 🔍
03/06/2017 +19 days 🔍
03/07/2017 +1 days 🔍
03/23/2017 +16 days 🔍
09/02/2020 +1259 days 🔍

Sourcesinfo

Vendor: kernel.org

Advisory: git.kernel.org
Researcher: Andrey Konovalov
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2017-5897 (🔍)
GCVE (CVE): GCVE-0-2017-5897
GCVE (VulDB): GCVE-100-96980

OVAL: 🔍

SecurityFocus: 96037 - Linux kernel 'ip6_gre.c' Denial of Service Vulnerability
OSVDB: - CVE-2017-5897 - Linux - Out-of-Bounds Access Issue
SecurityTracker: 1037794

See also: 🔍

Entryinfo

Created: 02/15/2017 16:49
Updated: 09/02/2020 10:49
Changes: 02/15/2017 16:49 (85), 09/02/2020 10:49 (7)
Complete: 🔍
Cache ID: 216::103

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