Synacor Zimbra Collaboration up to 8.7.3 xml external entity reference
CVSS Meta Temp Score | Current Exploit Price (≈) | CTI Interest Score |
---|---|---|
8.2 | $0-$5k | 0.00 |
A vulnerability classified as critical was found in Synacor Zimbra Collaboration up to 8.7.3 (Groupware Software). Affected by this vulnerability is an unknown code block. The manipulation with an unknown input leads to a xml external entity reference vulnerability. The CWE definition for the vulnerability is 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. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:
Zimbra Collaboration Suite (ZCS) before 8.7.4 allows remote attackers to conduct XML External Entity (XXE) attacks.
The bug was discovered 03/29/2017. The weakness was published 03/29/2017 by Alastair Gray as Bug 106811 as confirmed news (Website). It is possible to read the advisory at wiki.zimbra.com. The public release has been coordinated with Synacor. This vulnerability is known as CVE-2016-9924 since 12/11/2016. The exploitation appears to be easy. The attack can be launched remotely. The exploitation doesn't need any form of authentication. The technical details are unknown and an exploit is not publicly available.
Upgrading to version 8.7.4 eliminates this vulnerability.
Additional details are provided at bugzilla.zimbra.com. Similar entries are available at 101652 and 101653.
Product
Type
Vendor
Name
Version
License
CPE 2.3
CPE 2.2
CVSSv4
VulDB CVSS-B Score: 🔍VulDB CVSS-BT Score: 🔍
VulDB Vector: 🔍
VulDB Reliability: 🔍
CVSSv3
VulDB Meta Base Score: 8.5VulDB Meta Temp Score: 8.4
VulDB Base Score: 7.3
VulDB Temp Score: 7.0
VulDB Vector: 🔍
VulDB Reliability: 🔍
NVD Base Score: 9.8
NVD Vector: 🔍
CVSSv2
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VulDB Base Score: 🔍
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Exploiting
Class: Xml external entity referenceCWE: CWE-611 / CWE-610
ATT&CK: Unknown
Local: No
Remote: Yes
Availability: 🔍
Status: Not defined
EPSS Score: 🔍
EPSS Percentile: 🔍
Price Prediction: 🔍
Current Price Estimation: 🔍
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OpenVAS ID: 800201
OpenVAS Name: Zimbra Collaboration Multiple Vulnerabilities
OpenVAS File: 🔍
OpenVAS Family: 🔍
Threat Intelligence
Interest: 🔍Active Actors: 🔍
Active APT Groups: 🔍
Countermeasures
Recommended: UpgradeStatus: 🔍
0-Day Time: 🔍
Upgrade: Zimbra Collaboration 8.7.4
Timeline
12/11/2016 🔍03/27/2017 🔍
03/29/2017 🔍
03/29/2017 🔍
03/29/2017 🔍
03/30/2017 🔍
02/03/2020 🔍
Sources
Vendor: synacor.comAdvisory: Bug 106811
Researcher: Alastair Gray
Status: Confirmed
Confirmation: 🔍
Coordinated: 🔍
CVE: CVE-2016-9924 (🔍)
SecurityFocus: 97121 - Zimbra Collaboration Suite CVE-2016-9924 XML External Entity Injection Vulnerability
Misc.: 🔍
See also: 🔍
Entry
Created: 03/30/2017 09:22Updated: 02/03/2020 20:06
Changes: 03/30/2017 09:22 (70), 02/03/2020 20:06 (4)
Complete: 🔍
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