VDB-112803 · CVE-2017-17703 · Bug 108265

Synacor Zimbra Collaboration up to 8.8.2 Persistent cross site scripting

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.
4.9	$0-$5k	0.00

Summaryinfo

A vulnerability was found in Synacor Zimbra Collaboration up to 8.8.2. It has been classified as problematic. This impacts an unknown function. Performing a manipulation results in cross site scripting (Persistent). This vulnerability was named CVE-2017-17703. The attack may be initiated remotely. There is no available exploit. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability was found in Synacor Zimbra Collaboration up to 8.8.2 (Groupware Software). It has been classified as problematic. This affects an unknown code block. The manipulation with an unknown input leads to a cross site scripting vulnerability (Persistent). CWE is classifying the issue as CWE-79. The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users. This is going to have an impact on integrity. The summary by CVE is:

Synacor Zimbra Collaboration Suite (ZCS) before 8.8.3 has Persistent XSS.

The bug was discovered 05/04/2017. The weakness was presented 02/04/2018 as Bug 108265 as not defined bug report (Bugzilla). It is possible to read the advisory at bugzilla.zimbra.com. This vulnerability is uniquely identified as CVE-2017-17703 since 12/15/2017. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. It demands that the victim is doing some kind of user interaction. The technical details are unknown and an exploit is not publicly available. The attack technique deployed by this issue is T1059.007 according to MITRE ATT&CK.

The vulnerability was handled as a non-public zero-day exploit for at least 275 days. During that time the estimated underground price was around $0-$5k.

Upgrading to version 8.8.3 eliminates this vulnerability.

See VDB-112805 for similar entry. Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

Type

Groupware Software

Vendor

Synacor

Name

Zimbra Collaboration

Version

License

free

Website

Vendor: https://synacor.com/

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.2
VulDB Meta Temp Score: 5.1

VulDB Base Score: 4.3
VulDB Temp Score: 4.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 6.1
NVD Vector: 🔍

CVSSv2info

AV	AC	Au	C	I	A
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💳	💳	💳	💳	💳	💳
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Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
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Unlock	Unlock	Unlock	Unlock	Unlock	Unlock

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

NVD Base Score: 🔍

Exploitinginfo

Name: Persistent
Class: Cross site scripting / Persistent
CWE: CWE-79 / CWE-94 / CWE-74
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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

OpenVAS ID: 902639
OpenVAS Name: Zimbra Collaboration Suite Persistent XSS Vulnerability-02 Feb18
OpenVAS File: 🔍
OpenVAS Family: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Zimbra Collaboration 8.8.3

Timelineinfo

05/04/2017 🔍
12/15/2017 +225 days 🔍
02/03/2018 +50 days 🔍
02/04/2018 +1 days 🔍
02/05/2018 +1 days 🔍
02/03/2020 +728 days 🔍

Sourcesinfo

Vendor: synacor.com

Advisory: Bug 108265
Status: Not defined
Confirmation: 🔍

CVE: CVE-2017-17703 (🔍)
GCVE (CVE): GCVE-0-2017-17703
GCVE (VulDB): GCVE-100-112803
See also: 🔍

Entryinfo

Created: 02/05/2018 14:55
Updated: 02/03/2020 17:50
Changes: 02/05/2018 14:55 (66), 02/03/2020 17:50 (2)
Complete: 🔍
Cache ID: 216::103

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.