XXE in Synacor Zimbra_collaboration_suite
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 a crafted XML request to mailboxd.
Vulnerability class: XXE (XML External Entity)
EPSS: 0.022 (80.8th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
Affected products
- Synacor Zimbra_collaboration_suite — versions 8.7.11, 8.8.9, 8.8.10
- N/a — versions n/a
Weakness classification (CWE)
References
- cve@mitre.org (x_refsource_MISC, Vendor Advisory)
- cve@mitre.org (x_refsource_MISC, Release Notes, Vendor Advisory)
- cve@mitre.org (Third Party Advisory, x_refsource_MISC, Issue Tracking)
Frequently asked questions
- What is CVE-2018-20160?
- CVE-2018-20160 is a critical-severity vulnerability in Synacor Zimbra_collaboration_suite, classified under Improper Restriction of XML External Entity Reference (XXE). CVSS score: 9.8/10. Published 2019-05-29.
- How severe is CVE-2018-20160?
- Critical severity. CVSS v3 base score is 9.8 out of 10.