CVE-2018-20021
LibVNC Infinite Loop Vulnerability
Description
LibVNC before commit c3115350eb8bb635d0fdb4dbbb0d0541f38ed19c contains a CWE-835: Infinite loop vulnerability in VNC client code. Vulnerability allows attacker to consume excessive amount of resources like CPU and RAM
INFO
Published Date :
Dec. 19, 2018, 4:29 p.m.
Last Modified :
Oct. 23, 2020, 1:15 p.m.
Source :
[email protected]
Remotely Exploitable :
Yes !
Impact Score :
3.6
Exploitability Score :
3.9
Affected Products
The following products are affected by CVE-2018-20021
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-2018-20021.
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-2018-20021 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2018-20021 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 -
CVE Modified by [email protected]
Oct. 23, 2020
Action Type Old Value New Value Added Reference https://usn.ubuntu.com/4587-1/ [No Types Assigned] -
CVE Modified by [email protected]
Oct. 05, 2020
Action Type Old Value New Value Added Reference https://usn.ubuntu.com/4547-2/ [No Types Assigned] -
CVE Modified by [email protected]
Sep. 30, 2020
Action Type Old Value New Value Added Reference https://usn.ubuntu.com/4547-1/ [No Types Assigned] -
CVE Modified by [email protected]
Jun. 13, 2020
Action Type Old Value New Value Added Reference https://security.gentoo.org/glsa/202006-06 [No Types Assigned] -
CVE Modified by [email protected]
Dec. 21, 2019
Action Type Old Value New Value Added Reference https://lists.debian.org/debian-lts-announce/2019/12/msg00028.html [No Types Assigned] -
CVE Modified by [email protected]
Nov. 29, 2019
Action Type Old Value New Value Added Reference https://lists.debian.org/debian-lts-announce/2019/11/msg00033.html [No Types Assigned] -
CVE Modified by [email protected]
Oct. 31, 2019
Action Type Old Value New Value Added Reference https://lists.debian.org/debian-lts-announce/2019/10/msg00042.html [No Types Assigned] -
CWE Remap by [email protected]
Oct. 03, 2019
Action Type Old Value New Value Changed CWE CWE-400 CWE-400 CWE-399 CWE-835 -
CVE Modified by [email protected]
Aug. 09, 2019
Action Type Old Value New Value Added Reference https://security.gentoo.org/glsa/201908-05 [No Types Assigned] -
Modified Analysis by [email protected]
Feb. 26, 2019
Action Type Old Value New Value Changed Reference Type https://usn.ubuntu.com/3877-1/ No Types Assigned https://usn.ubuntu.com/3877-1/ Third Party Advisory Changed Reference Type https://www.debian.org/security/2019/dsa-4383 No Types Assigned https://www.debian.org/security/2019/dsa-4383 Third Party Advisory Changed CPE Configuration OR *cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:* OR *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:*:*:* *cpe:2.3:o:canonical:ubuntu_linux:18.10:*:*:*:*:*:*:* *cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:* *cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:* -
CVE Modified by [email protected]
Feb. 04, 2019
Action Type Old Value New Value Added Reference https://www.debian.org/security/2019/dsa-4383 [No Types Assigned] -
CVE Modified by [email protected]
Feb. 01, 2019
Action Type Old Value New Value Added Reference https://usn.ubuntu.com/3877-1/ [No Types Assigned] -
Initial Analysis by [email protected]
Jan. 07, 2019
Action Type Old Value New Value Added CVSS V2 (AV:N/AC:L/Au:N/C:N/I:N/A:C) Added CVSS V3 AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Changed Reference Type https://ics-cert.kaspersky.com/advisories/klcert-advisories/2018/12/19/klcert-18-031-libvnc-infinite-loop/ No Types Assigned https://ics-cert.kaspersky.com/advisories/klcert-advisories/2018/12/19/klcert-18-031-libvnc-infinite-loop/ Third Party Advisory Changed Reference Type https://lists.debian.org/debian-lts-announce/2018/12/msg00017.html No Types Assigned https://lists.debian.org/debian-lts-announce/2018/12/msg00017.html Mailing List, Third Party Advisory Added CWE CWE-400 Added CPE Configuration OR *cpe:2.3:a:libvnc_project:libvncserver:*:*:*:*:*:*:*:* versions up to (excluding) 0.9.12 Added CPE Configuration OR *cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:* -
CVE Modified by [email protected]
Dec. 27, 2018
Action Type Old Value New Value Added Reference https://lists.debian.org/debian-lts-announce/2018/12/msg00017.html [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-2018-20021 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-2018-20021
weaknesses.
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
0.96 }} -0.09%
score
0.83408
percentile