Actively exploited · Published Sep 22, 2022 · Assigned by mitre
CVE-2022-39197
Medium 6.1 Exploited
In plain English
A medium-severity cross-site scripting in Cobalt Strike from Fortra. Attackers are actively exploiting it in the wild (listed by CISA on March 30, 2023). The chance it is exploited in the next 30 days is estimated at 44.1% (higher than 99% of all known vulnerabilities). Ready-made attack tooling exists: public proof-of-concept code. Apply updates per vendor instructions.
CISA guidance
Apply updates per vendor instructions.
Federal agencies must remediate by Apr 20, 2023.
Official description
An XSS (Cross Site Scripting) vulnerability was found in HelpSystems Cobalt Strike through 4.7 that allowed a remote attacker to execute HTML on the Cobalt Strike teamserver. To exploit the vulnerability, one must first inspect a Cobalt Strike payload, and then modify the username field in the payload (or create a new payload with the extracted information and then modify that username field to be malformed).
Affected products (as reported)
Weakness: CWE-79 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
References
- https://www.cobaltstrike.com/blog/tag/release/ x_refsource_MISC
- https://www.cobaltstrike.com/blog/out-of-band-update-cobalt-strike-4-7-1/ x_refsource_MISC
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2022-39197 government-resource