Critical severity · published May 29, 2019
CVE-2018-20160
ZxChat (aka ZeXtras Chat), as used for zimbra-chat and zimbra-talk in Synacor Zimbra Collaboration Suite 8.7 and 8.8 and in other products, allows XXE attacks, as demonstrated by…
9.8
CVSS
2.2%
EPSS
No
On KEV
Description
ZxChat (aka ZeXtras Chat), as used for zimbra-chat and zimbra-talk in Synacor Zimbra Collaboration Suite 8.7 and 8.8 and in other products, allows XXE attacks, as demonstrated by a crafted XML request to mailboxd.
CVSS vector
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)2.2% · higher than 83% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
ZC
Zimbra Collaboration Suite · Synacor
8.7.0 before 8.7.11; 8.8.0 before 8.8.9; 8.7.11; 8.7.11; 8.7.11; 8.7.11; +19 more · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2018-20160
CVE.org
https://www.cve.org/CVERecord?id=CVE-2018-20160
Issue Tracking
https://bugzilla.zimbra.com/show_bug.cgi?id=109093
Release Notes
https://wiki.zimbra.com/wiki/Security_Center
Vendor Advisory
https://wiki.zimbra.com/wiki/Zimbra_Security_Advisories
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