Synacor Zimbra Collaboration Suite 8.7/8.8 zimbra-chat/zimbra-talk XML Request xml external entity reference

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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8.5$0-$5k0.00

Summaryinfo

A vulnerability was found in Synacor Zimbra Collaboration Suite 8.7/8.8. It has been rated as critical. The impacted element is an unknown function of the component zimbra-chat/zimbra-talk. Performing a manipulation as part of XML Request results in xml external entity reference. This vulnerability is identified as CVE-2018-20160. The attack can be initiated remotely. There is not any exploit available.

Detailsinfo

A vulnerability was found in Synacor Zimbra Collaboration Suite 8.7/8.8 (Groupware Software). It has been classified as critical. This affects an unknown function of the component zimbra-chat/zimbra-talk. The manipulation as part of a XML Request leads to a xml external entity reference vulnerability. CWE is classifying the issue as CWE-611. The product processes an XML document that can contain XML entities with URIs that resolve to documents outside of the intended sphere of control, causing the product to embed incorrect documents into its output. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

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.

The weakness was released 05/29/2019. This vulnerability is uniquely identified as CVE-2018-20160 since 12/15/2018. The exploitability is told to be easy. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. Neither technical details nor an exploit are publicly available.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

Entry connected to this vulnerability is available at VDB-135678. Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

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Version

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Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 8.5
VulDB Meta Temp Score: 8.5

VulDB Base Score: 7.3
VulDB Temp Score: 7.3
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 9.8
NVD Vector: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Xml external entity reference
CWE: CWE-611 / CWE-610
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

12/15/2018 🔍
05/29/2019 +165 days 🔍
05/30/2019 +1 days 🔍
09/25/2023 +1579 days 🔍

Sourcesinfo

Vendor: synacor.com

Advisory: bugzilla.zimbra.com
Status: Not defined

CVE: CVE-2018-20160 (🔍)
GCVE (CVE): GCVE-0-2018-20160
GCVE (VulDB): GCVE-100-135681
See also: 🔍

Entryinfo

Created: 05/30/2019 08:56
Updated: 09/25/2023 07:22
Changes: 05/30/2019 08:56 (37), 06/17/2020 06:33 (18), 09/25/2023 07:22 (3)
Complete: 🔍
Cache ID: 216::103

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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