CVE-2017-2647
Linux KEYS NULL Pointer Dereference Elevation of Privilege Vulnerability
Description
The KEYS subsystem in the Linux kernel before 3.18 allows local users to gain privileges or cause a denial of service (NULL pointer dereference and system crash) via vectors involving a NULL value for a certain match field, related to the keyring_search_iterator function in keyring.c.
INFO
Published Date :
March 31, 2017, 4:59 a.m.
Last Modified :
Feb. 12, 2023, 11:29 p.m.
Source :
[email protected]
Remotely Exploitable :
No
Impact Score :
5.9
Exploitability Score :
1.8
Public PoC/Exploit Available at Github
CVE-2017-2647 has a 1 public PoC/Exploit available at Github.
Go to the Public Exploits tab to see the list.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2017-2647.
| URL | Resource |
|---|---|
| http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=c06cfb08b88dfbe13be44a69ae2fdc3a7c902d81 | Issue Tracking Patch Third Party Advisory |
| http://www.securityfocus.com/bid/97258 | Third Party Advisory VDB Entry |
| https://access.redhat.com/errata/RHSA-2017:1842 | |
| https://access.redhat.com/errata/RHSA-2017:2077 | |
| https://access.redhat.com/errata/RHSA-2017:2437 | |
| https://access.redhat.com/errata/RHSA-2017:2444 | |
| https://bugzilla.redhat.com/show_bug.cgi?id=1428353 | Issue Tracking Patch |
| https://github.com/torvalds/linux/commit/c06cfb08b88dfbe13be44a69ae2fdc3a7c902d81 | Issue Tracking Patch Third Party Advisory |
| https://usn.ubuntu.com/3849-1/ | |
| https://usn.ubuntu.com/3849-2/ |
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
None
Python
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2017-2647 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2017-2647 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
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CVE Modified by [email protected]
May. 14, 2024
Action Type Old Value New Value -
CVE Modified by [email protected]
Feb. 12, 2023
Action Type Old Value New Value Changed Description A flaw was found that can be triggered in keyring_search_iterator in keyring.c if type->match is NULL. A local user could use this flaw to crash the system or, potentially, escalate their privileges. The KEYS subsystem in the Linux kernel before 3.18 allows local users to gain privileges or cause a denial of service (NULL pointer dereference and system crash) via vectors involving a NULL value for a certain match field, related to the keyring_search_iterator function in keyring.c. Removed CVSS V3 Red Hat, Inc. AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H Removed Reference https://access.redhat.com/errata/RHSA-2020:3548 [No Types Assigned] Removed Reference https://access.redhat.com/errata/RHSA-2020:3836 [No Types Assigned] Removed Reference https://access.redhat.com/security/cve/CVE-2017-2647 [No Types Assigned] -
CVE Modified by [email protected]
Feb. 02, 2023
Action Type Old Value New Value Changed Description The KEYS subsystem in the Linux kernel before 3.18 allows local users to gain privileges or cause a denial of service (NULL pointer dereference and system crash) via vectors involving a NULL value for a certain match field, related to the keyring_search_iterator function in keyring.c. A flaw was found that can be triggered in keyring_search_iterator in keyring.c if type->match is NULL. A local user could use this flaw to crash the system or, potentially, escalate their privileges. Added CVSS V3 Red Hat, Inc. AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H Added Reference https://access.redhat.com/security/cve/CVE-2017-2647 [No Types Assigned] Added Reference https://access.redhat.com/errata/RHSA-2020:3836 [No Types Assigned] Added Reference https://access.redhat.com/errata/RHSA-2020:3548 [No Types Assigned] -
CVE Modified by [email protected]
Jan. 15, 2019
Action Type Old Value New Value Added Reference https://usn.ubuntu.com/3849-1/ [No Types Assigned] -
CVE Modified by [email protected]
Dec. 21, 2018
Action Type Old Value New Value Added Reference https://usn.ubuntu.com/3849-2/ [No Types Assigned] -
CVE Modified by [email protected]
Jan. 05, 2018
Action Type Old Value New Value Added Reference https://access.redhat.com/errata/RHSA-2017:2444 [No Types Assigned] Added Reference https://access.redhat.com/errata/RHSA-2017:2437 [No Types Assigned] Added Reference https://access.redhat.com/errata/RHSA-2017:2077 [No Types Assigned] Added Reference https://access.redhat.com/errata/RHSA-2017:1842 [No Types Assigned] -
Initial Analysis by [email protected]
Apr. 04, 2017
Action Type Old Value New Value Added CVSS V2 (AV:L/AC:L/Au:N/C:C/I:C/A:C) Added CVSS V3 AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H Changed Reference Type http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=c06cfb08b88dfbe13be44a69ae2fdc3a7c902d81 No Types Assigned http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=c06cfb08b88dfbe13be44a69ae2fdc3a7c902d81 Issue Tracking, Patch, Third Party Advisory Changed Reference Type http://www.securityfocus.com/bid/97258 No Types Assigned http://www.securityfocus.com/bid/97258 Third Party Advisory, VDB Entry Changed Reference Type https://bugzilla.redhat.com/show_bug.cgi?id=1428353 No Types Assigned https://bugzilla.redhat.com/show_bug.cgi?id=1428353 Issue Tracking, Patch Changed Reference Type https://github.com/torvalds/linux/commit/c06cfb08b88dfbe13be44a69ae2fdc3a7c902d81 No Types Assigned https://github.com/torvalds/linux/commit/c06cfb08b88dfbe13be44a69ae2fdc3a7c902d81 Issue Tracking, Patch, Third Party Advisory Added CWE CWE-476 Added CPE Configuration OR *cpe:2.3:o:linux:linux_kernel:3.17.8:*:*:*:*:*:*:* (and previous) -
CVE Modified by [email protected]
Apr. 04, 2017
Action Type Old Value New Value Added Reference http://www.securityfocus.com/bid/97258 [No Types Assigned]
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2017-2647 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2017-2647
weaknesses.
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
0.04 }} 0.00%
score
0.05635
percentile