Synacor Zimbra Collaboration up to 8.7.11 Patch 3/8.8.8 Patch 3 Web Client Persistent cross site scripting

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

Summaryinfo

A vulnerability was found in Synacor Zimbra Collaboration up to 8.7.11 Patch 3/8.8.8 Patch 3. It has been rated as problematic. The affected element is an unknown function of the component Web Client. Performing a manipulation results in cross site scripting (Persistent). This vulnerability is reported as CVE-2018-10939. The attack is possible to be carried out remotely. No exploit exists. It is suggested to install a patch to address this issue.

Detailsinfo

A vulnerability classified as problematic has been found in Synacor Zimbra Collaboration up to 8.7.11 Patch 3/8.8.8 Patch 3 (Groupware Software). This affects an unknown function of the component Web Client. 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:

Zimbra Web Client (ZWC) in Zimbra Collaboration Suite 8.8 before 8.8.8.Patch4 and 8.7 before 8.7.11.Patch4 has Persistent XSS via a contact group.

The bug was discovered 05/09/2018. The weakness was disclosed 05/30/2018 (Website). The advisory is shared at blog.zimbra.com. This vulnerability is uniquely identified as CVE-2018-10939 since 05/09/2018. 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. Neither technical details nor an exploit are publicly available. MITRE ATT&CK project uses the attack technique T1059.007 for this issue.

The vulnerability was handled as a non-public zero-day exploit for at least 21 days. During that time the estimated underground price was around $0-$5k.

Applying the patch 8.7.11 Patch 4/8.8.8 Patch 4 is able to eliminate this problem.

The entry VDB-118375 is pretty similar. Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Type

Vendor

Name

Version

License

Website

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

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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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: 🔍

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Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Patch
Status: 🔍

0-Day Time: 🔍

Patch: 8.7.11 Patch 4/8.8.8 Patch 4

Timelineinfo

05/09/2018 🔍
05/09/2018 +0 days 🔍
05/30/2018 +20 days 🔍
05/30/2018 +0 days 🔍
05/31/2018 +1 days 🔍
06/05/2020 +736 days 🔍

Sourcesinfo

Vendor: synacor.com

Advisory: blog.zimbra.com
Status: Not defined
Confirmation: 🔍

CVE: CVE-2018-10939 (🔍)
GCVE (CVE): GCVE-0-2018-10939
GCVE (VulDB): GCVE-100-118377
See also: 🔍

Entryinfo

Created: 05/31/2018 11:37
Updated: 06/05/2020 08:15
Changes: 05/31/2018 11:37 (64), 06/05/2020 08:15 (2)
Complete: 🔍
Cache ID: 216::103

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

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