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).

References

• https://nvd.nist.gov/vuln/detail/CVE-2022-39197
• https://www.cobaltstrike.com/blog/out-of-band-update-cobalt-strike-4-7-1/
• https://www.cobaltstrike.com/blog/tag/release/