CVE-2021-36798
Cobalt Strike Team Server DoS Vulnerability
Description
A Denial-of-Service (DoS) vulnerability was discovered in Team Server in HelpSystems Cobalt Strike 4.2 and 4.3. It allows remote attackers to crash the C2 server thread and block beacons' communication with it.
INFO
Published Date :
Aug. 9, 2021, 1:15 p.m.
Last Modified :
Aug. 17, 2021, 12:49 p.m.
Source :
[email protected]
Remotely Exploitable :
Yes !
Impact Score :
3.6
Exploitability Score :
3.9
Public PoC/Exploit Available at Github
CVE-2021-36798 has a 9 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-2021-36798.
| URL | Resource |
|---|---|
| https://labs.sentinelone.com/hotcobalt-new-cobalt-strike-dos-vulnerability-that-lets-you-halt-operations/ | Exploit Third Party Advisory |
| https://www.cobaltstrike.com/releasenotes.txt | Release Notes Vendor Advisory |
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).
All CVE - PoC in GitHub
poc proofofconcept tester allcve cvegithub cvenew cvepoc cveupdate
None
None
Tool which leverages CVE-2021-36798 (HotCobalt) and related work from SentinelOne to DoS CobaltStrike 4.2 and 4.3 servers
Python
None
CVE-2021-36798: CobaltStrike < 4.4 Dos
Python
Cobalt Strike < 4.4 dos CVE-2021-36798
cve-2021-36798
Python
Automatic monitor github cve using Github Actions
Python
List of Awesome CobaltStrike Resources
cobalt-strike security redteam
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2021-36798 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2021-36798 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 -
Initial Analysis by [email protected]
Aug. 17, 2021
Action Type Old Value New Value Added CVSS V2 NIST (AV:N/AC:L/Au:N/C:N/I:N/A:P) Added CVSS V3.1 NIST AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Changed Reference Type https://labs.sentinelone.com/hotcobalt-new-cobalt-strike-dos-vulnerability-that-lets-you-halt-operations/ No Types Assigned https://labs.sentinelone.com/hotcobalt-new-cobalt-strike-dos-vulnerability-that-lets-you-halt-operations/ Exploit, Third Party Advisory Changed Reference Type https://www.cobaltstrike.com/releasenotes.txt No Types Assigned https://www.cobaltstrike.com/releasenotes.txt Release Notes, Vendor Advisory Added CWE NIST CWE-770 Added CPE Configuration OR *cpe:2.3:a:helpsystems:cobalt_strike:4.2:*:*:*:*:*:*:* *cpe:2.3:a:helpsystems:cobalt_strike:4.3:*:*:*:*:*:*:*
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2021-36798 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-2021-36798
weaknesses.
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
0.28 }} 0.03%
score
0.68112
percentile