9.8
CRITICAL
CVE-2018-20160
Synacor Zimbra Collaboration Suite XML External Entity Injection (XXE) Vulnerability
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.

INFO

Published Date :

May 29, 2019, 10:29 p.m.

Last Modified :

Nov. 21, 2024, 4 a.m.

Remotely Exploitable :

Yes !

Impact Score :

5.9

Exploitability Score :

3.9
Affected Products

The following products are affected by CVE-2018-20160 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

ID Vendor Product Action
1 Synacor zimbra_collaboration_suite
References to Advisories, Solutions, and Tools

Here, you will find a curated list of external links that provide in-depth information, practical solutions, and valuable tools related to CVE-2018-20160.

URL Resource
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
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

We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).

Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2018-20160 vulnerability anywhere in the article.

The following table lists the changes that have been made to the CVE-2018-20160 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.

  • CVE Modified by af854a3a-2127-422b-91ae-364da2661108

    Nov. 21, 2024

    Action Type Old Value New Value
    Added Reference https://bugzilla.zimbra.com/show_bug.cgi?id=109093
    Added Reference https://wiki.zimbra.com/wiki/Security_Center
    Added Reference https://wiki.zimbra.com/wiki/Zimbra_Security_Advisories
  • CVE Modified by [email protected]

    May. 14, 2024

    Action Type Old Value New Value
  • Initial Analysis by [email protected]

    May. 30, 2019

    Action Type Old Value New Value
    Added CVSS V2 (AV:N/AC:L/Au:N/C:P/I:P/A:P)
    Added CVSS V3 AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
    Changed Reference Type https://bugzilla.zimbra.com/show_bug.cgi?id=109093 No Types Assigned https://bugzilla.zimbra.com/show_bug.cgi?id=109093 Issue Tracking, Third Party Advisory
    Changed Reference Type https://wiki.zimbra.com/wiki/Zimbra_Security_Advisories No Types Assigned https://wiki.zimbra.com/wiki/Zimbra_Security_Advisories Vendor Advisory
    Changed Reference Type https://wiki.zimbra.com/wiki/Security_Center No Types Assigned https://wiki.zimbra.com/wiki/Security_Center Release Notes, Vendor Advisory
    Added CWE CWE-611
    Added CPE Configuration OR *cpe:2.3:a:synacor:zimbra_collaboration_suite:*:*:*:*:*:*:*:* versions from (including) 8.7.0 up to (excluding) 8.7.11 *cpe:2.3:a:synacor:zimbra_collaboration_suite:8.7.11:-:*:*:*:*:*:* *cpe:2.3:a:synacor:zimbra_collaboration_suite:8.7.11:p1:*:*:*:*:*:* *cpe:2.3:a:synacor:zimbra_collaboration_suite:8.7.11:p2:*:*:*:*:*:* *cpe:2.3:a:synacor:zimbra_collaboration_suite:8.7.11:p3:*:*:*:*:*:* *cpe:2.3:a:synacor:zimbra_collaboration_suite:8.7.11:p4:*:*:*:*:*:* *cpe:2.3:a:synacor:zimbra_collaboration_suite:8.7.11:p5:*:*:*:*:*:* *cpe:2.3:a:synacor:zimbra_collaboration_suite:8.7.11:p6:*:*:*:*:*:* *cpe:2.3:a:synacor:zimbra_collaboration_suite:8.7.11:p7:*:*:*:*:*:* *cpe:2.3:a:synacor:zimbra_collaboration_suite:8.7.11:p8:*:*:*:*:*:* *cpe:2.3:a:synacor:zimbra_collaboration_suite:8.7.11:p9:*:*:*:*:*:* *cpe:2.3:a:synacor:zimbra_collaboration_suite:*:*:*:*:*:*:*:* versions from (including) 8.8.0 up to (excluding) 8.8.9 *cpe:2.3:a:synacor:zimbra_collaboration_suite:8.8.9:-:*:*:*:*:*:* *cpe:2.3:a:synacor:zimbra_collaboration_suite:8.8.9:p1:*:*:*:*:*:* *cpe:2.3:a:synacor:zimbra_collaboration_suite:8.8.9:p2:*:*:*:*:*:* *cpe:2.3:a:synacor:zimbra_collaboration_suite:8.8.9:p3:*:*:*:*:*:* *cpe:2.3:a:synacor:zimbra_collaboration_suite:8.8.9:p4:*:*:*:*:*:* *cpe:2.3:a:synacor:zimbra_collaboration_suite:8.8.9:p6:*:*:*:*:*:* *cpe:2.3:a:synacor:zimbra_collaboration_suite:8.8.9:p7:*:*:*:*:*:* *cpe:2.3:a:synacor:zimbra_collaboration_suite:8.8.9:p8:*:*:*:*:*:* *cpe:2.3:a:synacor:zimbra_collaboration_suite:8.8.10:-:*:*:*:*:*:* *cpe:2.3:a:synacor:zimbra_collaboration_suite:8.8.10:p2:*:*:*:*:*:* *cpe:2.3:a:synacor:zimbra_collaboration_suite:8.8.10:p3:*:*:*:*:*:* *cpe:2.3:a:synacor:zimbra_collaboration_suite:8.8.10:p4:*:*:*:*:*:* *cpe:2.3:a:synacor:zimbra_collaboration_suite:8.8.11:-:*:*:*:*:*:*
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2018-20160 is associated with the following CWEs:

Common Attack Pattern Enumeration and Classification (CAPEC)

Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2018-20160 weaknesses.

Exploit Prediction

EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.

0.38 }} 0.06%

score

0.72553

percentile

CVSS30 - Vulnerability Scoring System
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability