CVE-2017-6951 : The keyring_search_aux function in security/keys/keyring.c in the Linux kernel t

The keyring_search_aux function in security/keys/keyring.c in the Linux kernel through 3.14.79 allows local users to cause a denial of service (NULL pointer dereference and OOPS) via a request_key system call for the "dead" type.

Published 2017-03-16 18:59:00

Updated 2018-01-05 02:31:50

Source MITRE

View at NVD, CVE.org

Vulnerability category: Memory CorruptionDenial of service

Products affected by CVE-2017-6951

Linux » Linux Kernel
Versions up to, including, (<=) 3.14.79
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
Matching versions

Threat overview for CVE-2017-6951

Top countries where our scanners detected CVE-2017-6951

Top open port discovered on systems with this issue 49152

IPs affected by CVE-2017-6951 19,527

Threat actors abusing to this issue? Yes

Find out if you^* are affected by CVE-2017-6951!

^*Directly or indirectly through your vendors, service providers and 3rd parties. Powered by attack surface intelligence from SecurityScorecard.

Exploit prediction scoring system (EPSS) score for CVE-2017-6951

EPSS FAQ

0.04%

Probability of exploitation activity in the next 30 days EPSS Score History

~ 6 %

Percentile, the proportion of vulnerabilities that are scored at or less

CVSS scores for CVE-2017-6951

Base Score	Base Severity	CVSS Vector	Exploitability Score	Impact Score	Score Source
4.9	MEDIUM	AV:L/AC:L/Au:N/C:N/I:N/A:C	3.9	6.9	NIST
Access Vector: Local Access Complexity: Low Authentication: None Confidentiality Impact: None Integrity Impact: None Availability Impact: Complete
5.5	MEDIUM	CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H	1.8	3.6	NIST
Attack Vector: Local Attack Complexity: Low Privileges Required: Low User Interaction: None Scope: Unchanged Confidentiality: None Integrity: None Availability: High

CWE ids for CVE-2017-6951

CWE-476 NULL Pointer Dereference

The product dereferences a pointer that it expects to be valid but is NULL.

Assigned by: nvd@nist.gov (Primary)

References for CVE-2017-6951

http://www.spinics.net/lists/keyrings/msg01849.html

Re: PROBLEM: null-ptr deref in keyring_search_aux may lead to denial of service — keyrings
Mailing List;Third Party Advisory
http://www.securityfocus.com/bid/96943

Linux Kernel CVE-2017-6951 Local Denial of Service Vulnerability
Third Party Advisory;VDB Entry
https://access.redhat.com/errata/RHSA-2017:1842

RHSA-2017:1842 - Security Advisory - Red Hat Customer Portal

CVEs referencing this url
https://access.redhat.com/errata/RHSA-2017:2077

RHSA-2017:2077 - Security Advisory - Red Hat Customer Portal

CVEs referencing this url
http://www.spinics.net/lists/keyrings/msg01846.html

Re: PROBLEM: null-ptr deref in keyring_search_aux may lead to denial of service — keyrings
Mailing List;Third Party Advisory
http://www.spinics.net/lists/keyrings/msg01845.html

PROBLEM: null-ptr deref in keyring_search_aux may lead to denial of service — keyrings
Mailing List;Third Party Advisory
https://access.redhat.com/errata/RHSA-2017:2669

RHSA-2017:2669 - Security Advisory - Red Hat Customer Portal

CVEs referencing this url