CVE-2018-12896
Linux Kernel POSIX Timer Integer Overflow Denial of Service
Description
An issue was discovered in the Linux kernel through 4.17.3. An Integer Overflow in kernel/time/posix-timers.c in the POSIX timer code is caused by the way the overrun accounting works. Depending on interval and expiry time values, the overrun can be larger than INT_MAX, but the accounting is int based. This basically makes the accounting values, which are visible to user space via timer_getoverrun(2) and siginfo::si_overrun, random. For example, a local user can cause a denial of service (signed integer overflow) via crafted mmap, futex, timer_create, and timer_settime system calls.
INFO
Published Date :
July 2, 2018, 5:29 p.m.
Last Modified :
Nov. 21, 2024, 3:46 a.m.
Source :
[email protected]
Remotely Exploitable :
No
Impact Score :
3.6
Exploitability Score :
1.8
Affected Products
The following products are affected by CVE-2018-12896
vulnerability.
Even if cvefeed.io is aware of the exact versions of the
products
that
are
affected, the information is not represented in the table below.
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-2018-12896.
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).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2018-12896 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2018-12896 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.
-
CVE Modified by [email protected]
May. 14, 2024
Action Type Old Value New Value -
Modified Analysis by [email protected]
Apr. 03, 2019
Action Type Old Value New Value Changed Reference Type https://lists.debian.org/debian-lts-announce/2019/03/msg00017.html No Types Assigned https://lists.debian.org/debian-lts-announce/2019/03/msg00017.html Mailing List, Third Party Advisory Changed Reference Type https://usn.ubuntu.com/3849-1/ No Types Assigned https://usn.ubuntu.com/3849-1/ Third Party Advisory Changed Reference Type https://usn.ubuntu.com/3847-3/ No Types Assigned https://usn.ubuntu.com/3847-3/ Third Party Advisory Changed Reference Type https://usn.ubuntu.com/3848-2/ No Types Assigned https://usn.ubuntu.com/3848-2/ Third Party Advisory Changed Reference Type https://usn.ubuntu.com/3849-2/ No Types Assigned https://usn.ubuntu.com/3849-2/ Third Party Advisory Changed Reference Type https://usn.ubuntu.com/3847-2/ No Types Assigned https://usn.ubuntu.com/3847-2/ Third Party Advisory Changed Reference Type https://usn.ubuntu.com/3848-1/ No Types Assigned https://usn.ubuntu.com/3848-1/ Third Party Advisory Changed Reference Type https://usn.ubuntu.com/3847-1/ No Types Assigned https://usn.ubuntu.com/3847-1/ Third Party Advisory Changed Reference Type https://lists.debian.org/debian-lts-announce/2019/04/msg00004.html No Types Assigned https://lists.debian.org/debian-lts-announce/2019/04/msg00004.html Mailing List, Third Party Advisory Changed Reference Type https://lists.debian.org/debian-lts-announce/2019/03/msg00034.html No Types Assigned https://lists.debian.org/debian-lts-announce/2019/03/msg00034.html Mailing List, Third Party Advisory Added CPE Configuration OR *cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:* Added CPE Configuration OR *cpe:2.3:o:canonical:ubuntu_linux:12.04:*:*:*:esm:*:*:* *cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:lts:*:*:* *cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:* *cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:* -
CVE Modified by [email protected]
Apr. 01, 2019
Action Type Old Value New Value Added Reference https://lists.debian.org/debian-lts-announce/2019/04/msg00004.html [No Types Assigned] -
CVE Modified by [email protected]
Mar. 27, 2019
Action Type Old Value New Value Added Reference https://lists.debian.org/debian-lts-announce/2019/03/msg00034.html [No Types Assigned] -
CVE Modified by [email protected]
Mar. 21, 2019
Action Type Old Value New Value Added Reference https://lists.debian.org/debian-lts-announce/2019/03/msg00017.html [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] Added Reference https://usn.ubuntu.com/3848-2/ [No Types Assigned] Added Reference https://usn.ubuntu.com/3848-1/ [No Types Assigned] Added Reference https://usn.ubuntu.com/3847-3/ [No Types Assigned] Added Reference https://usn.ubuntu.com/3847-2/ [No Types Assigned] Added Reference https://usn.ubuntu.com/3847-1/ [No Types Assigned] -
Initial Analysis by [email protected]
Sep. 04, 2018
Action Type Old Value New Value Added CVSS V2 (AV:L/AC:L/Au:N/C:N/I:N/A:P) Added CVSS V3 AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H Changed Reference Type https://bugzilla.kernel.org/show_bug.cgi?id=200189 No Types Assigned https://bugzilla.kernel.org/show_bug.cgi?id=200189 Issue Tracking, Vendor Advisory Changed Reference Type https://github.com/lcytxw/bug_repro/tree/master/bug_200189 No Types Assigned https://github.com/lcytxw/bug_repro/tree/master/bug_200189 Exploit, Third Party Advisory Changed Reference Type https://github.com/torvalds/linux/commit/78c9c4dfbf8c04883941445a195276bb4bb92c76 No Types Assigned https://github.com/torvalds/linux/commit/78c9c4dfbf8c04883941445a195276bb4bb92c76 Patch, Third Party Advisory Added CWE CWE-190 Added CPE Configuration OR *cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions up to (including) 4.17.3
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2018-12896 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-2018-12896
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
0.08236
percentile