CVE-2018-20160 - Improper Restriction of XML External Entity Reference

Severity

75%

Complexity

99%

Confidentiality

106%

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.

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 3.0 Base Score 9.8. CVSS Attack Vector: network. CVSS Attack Complexity: low. CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H).

CVSS 2.0 Base Score 7.5. CVSS Attack Vector: network. CVSS Attack Complexity: low. CVSS Vector: (AV:N/AC:L/Au:N/C:P/I:P/A:P).

Overview

Type

Synacor Zimbra Collaboration Suite

First reported 6 years ago

2019-05-29 22:29:00

Last updated 6 years ago

2019-05-30 18:02:00

Affected Software

Synacor Zimbra Collaboration Suite (ZCS) 8.7.11

8.7.11

Synacor Zimbra Collaboration Suite (ZCS) 8.8.9

8.8.9

Synacor Zimbra Collaboration Suite (ZCS) 8.8.10

8.8.10

Synacor Zimbra Collaboration Suite (ZCS) 8.8.11

8.8.11

References

https://bugzilla.zimbra.com/show_bug.cgi?id=109093

Issue Tracking, Third Party Advisory

https://wiki.zimbra.com/wiki/Security_Center

Release Notes, Vendor Advisory

https://wiki.zimbra.com/wiki/Zimbra_Security_Advisories

Vendor Advisory

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