CVE-2018-20160

high-risk
Published 2019-05-29

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.

Do I need to act?

~
1.6% chance of exploitation in next 30 days
EPSS score — moderate exploit probability
-
Not on CISA KEV list
No confirmed active exploitation reported to CISA
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
9
CVSS 9.8/10 Critical
NETWORK / LOW complexity

Affected Products (20)

Affected Vendors

Synacor

References (6)

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
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
57
/ 100
high-risk
Severity 32/34 · Critical
Exploitability 4/34 · Minimal
Exposure 21/34 · High