CVE-2022-39197

CVE-2022-39197 is a medium-severity (CVSS 6.1) vulnerability in Fortra Cobalt Strike. CISA added it to the Known Exploited Vulnerabilities catalog on March 30, 2023, which means exploitation in the wild has been confirmed; US federal agencies had to remediate it by April 20, 2023. CISA does not currently list it as used in ransomware campaigns. Fortra has 4 vulnerabilities in the KEV catalog, 2 of them linked to ransomware.

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).

CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

• https://www.cobaltstrike.com/blog/out-of-band-update-cobalt-strike-4-7-1/
• https://www.cobaltstrike.com/blog/tag/release/
• https://www.cobaltstrike.com/blog/out-of-band-update-cobalt-strike-4-7-1/
• https://www.cobaltstrike.com/blog/tag/release/
• https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2022-39197