VDB-177935 · CVE-2021-35209 · GCVE-0-2021-35209

Synacor Zimbra Collaboration Suite up to 8.8.15 Patch 22/9.0.0 Patch 15 Header ProxyServlet.java X-Host access control

CVSS Meta Temp Score CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.	Current Exploit Price (≈) Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.	CTI Interest Score Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
5.3	$0-$5k	0.00

Summaryinfo

A vulnerability identified as critical has been detected in Synacor Zimbra Collaboration Suite up to 8.8.15 Patch 22/9.0.0 Patch 15. Affected is an unknown function of the file ProxyServlet.java of the component Header Handler. The manipulation of the argument X-Host leads to access control. This vulnerability is referenced as CVE-2021-35209. No exploit is available. It is recommended to apply a patch to fix this issue.

Detailsinfo

A vulnerability was found in Synacor Zimbra Collaboration Suite up to 8.8.15 Patch 22/9.0.0 Patch 15 (Groupware Software) and classified as critical. This issue affects some unknown functionality of the file ProxyServlet.java of the component Header Handler. The manipulation of the argument X-Host with an unknown input leads to a access control vulnerability. Using CWE to declare the problem leads to CWE-264. Impacted is confidentiality, integrity, and availability.

The weakness was published 07/03/2021. It is possible to read the advisory at wiki.zimbra.com. The identification of this vulnerability is CVE-2021-35209. Technical details of the vulnerability are known, but there is no available exploit. The attack technique deployed by this issue is T1068 according to MITRE ATT&CK.

Applying the patch 8.8.15 Patch 23/9.0.0 Patch 16 is able to eliminate this problem. The bugfix is ready for download at wiki.zimbra.com.

Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

Type

Groupware Software

Vendor

Synacor

Name

Zimbra Collaboration Suite

Version

License

free

Website

Vendor: https://synacor.com/

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.5
VulDB Meta Temp Score: 5.3

VulDB Base Score: 5.5
VulDB Temp Score: 5.3
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

AV	AC	Au	C	I	A
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳

Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock

VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

Class: Access control
CWE: CWE-264
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Partially

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-Day	Unlock	Unlock	Unlock	Unlock
Today	Unlock	Unlock	Unlock	Unlock

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Patch
Status: 🔍

0-Day Time: 🔍

Patch: 8.8.15 Patch 23/9.0.0 Patch 16

Timelineinfo

06/22/2021 🔍
07/03/2021 +11 days 🔍
07/03/2021 +0 days 🔍
07/09/2021 +6 days 🔍

Sourcesinfo

Vendor: synacor.com

Advisory: wiki.zimbra.com
Status: Confirmed

CVE: CVE-2021-35209 (🔍)
GCVE (CVE): GCVE-0-2021-35209
GCVE (VulDB): GCVE-100-177935

Entryinfo

Created: 07/03/2021 08:39
Updated: 07/09/2021 15:18
Changes: 07/03/2021 08:39 (42), 07/09/2021 15:18 (5)
Complete: 🔍
Cache ID: 216::103