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Medium severity · published Feb 9, 2022
CVE-2022-24682
Synacor Zimbra Collaborate Suite (ZCS) Cross-Site Scripting Vulnerability
RansomwareIn wildKEV
6.1
CVSS
30.9%
EPSS
Yes
On KEV
Description
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
Required
Confidentiality
Low
Integrity
Low
Availability
None
Scope
Changed
Exploitation
Is it being used?
Exploit prediction (EPSS)30.9% · higher than 98% of CVEs
Exploited in the wildYes
CISA KEVListed Feb 25, 2022
Federal remediation dueMar 11, 2022
Ransomware campaign useKnown
Affected products
Which versions
ZC
Zimbra Collaboration Suite · Synacor
8.8.0 before 8.8.15; 8.8.15; 8.8.15; 8.8.15; 8.8.15; 8.8.15; +25 more · source: NVD
ZC
Zimbra Collaborate Suite (ZCS) · Synacor
All versions, or not specified · source: KEV
Affected product
ZC
Zimbra Collaboration Suite
Synacor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2022-24682
CVE.org
https://www.cve.org/CVERecord?id=CVE-2022-24682
CISA KEV catalogue
https://www.cisa.gov/known-exploited-vulnerabilities-catalog
x_refsource_MISC
https://wiki.zimbra.com/wiki/Zimbra_Security_Advisories
x_refsource_MISC
https://wiki.zimbra.com/wiki/Security_Center
x_refsource_MISC
https://www.volexity.com/blog/2022/02/03/operation-emailthief-active-exploitation-of-zero-day-xss-vulnerability-in-zimbra/
x_refsource_MISC
https://blog.zimbra.com/2022/02/hotfix-available-5-feb-for-zero-day-exploit-vulnerability-in-zimbra-8-8-15/
x_refsource_MISC
https://wiki.zimbra.com/wiki/Zimbra_Releases/8.8.15/P30
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