CVE-2022-24682
MEDIUM severity · CVSS 6.1 · CWE-116 · actively exploited (CISA KEV)
6.1CVSS MEDIUM exploited ransomware
Actively exploited in the wild (CISA Known Exploited Vulnerabilities).
Known use in ransomware campaigns. Added to KEV 2022-02-25. US federal agencies must patch by 2022-03-11.
Summary
An issue was discovered in the Calendar feature in Zimbra Collaboration Suite 8.8.x before 8.8.15 patch 30 (update 1), as exploited in the wild starting in December 2021. An attacker could place HTML containing executable JavaScript inside element attributes. This markup becomes unescaped, causing arbitrary markup to be injected into the document.
Impact & exploitability
Attack vectorNetwork
Attack complexityLow
Privileges requiredNone
User interactionRequired
Confidentiality impactLow
Integrity impactLow
Availability impactNone
Exploit probability (EPSS)31%
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Affected products we track (1)
Recommendation
This vulnerability is being actively exploited in the wild — patch affected products urgently. Open any affected product above for its exact safe version.
Additional information
- NVD record
- https://blog.zimbra.com/2022/02/hotfix-available-5-feb-for-zero-day-exploit-vulnerability-in-zimbra-8-8-15/Advisory
- https://wiki.zimbra.com/wiki/Security_CenterAdvisory
- https://wiki.zimbra.com/wiki/Zimbra_Releases/8.8.15/P30Advisory
- https://wiki.zimbra.com/wiki/Zimbra_Security_AdvisoriesAdvisory
- https://www.volexity.com/blog/2022/02/03/operation-emailthief-active-exploitation-of-zero-day-xss-vulnerability-in-zimbra/Advisory