CVE-2021-36798

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.

CVSS v3.1

7.5 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CVSS v2.0

5.0 MEDIUMAV:N/AC:L/Au:N/C:N/I:N/A:P

EPSS

4.29% chance of exploitation in the next 30 days, 90th percentile

Published

2021-08-09

Updated

2024-08-04

Proof-of-concept exploits (3)

• https://labs.sentinelone.com/hotcobalt-new-cobalt-strike-dos-vulnerability-that-lets-you-…
• JamVayne/CobaltStrikeDos103★ · 2021-09-26
• M-Kings/CVE-2021-3679836★ · 2021-08-19

References

• CVE Record
• NVD entry

Related

• CVE-2021-36787
• CVE-2021-36799
• CVE-2021-36782
• CVE-2021-3680
• CVE-2021-36766
• CVE-2021-36800