CVE-2018-6882

MEDIUM KEV RANSOMWARE NUCLEI

Zimbra Collaboration Suite < 8.7.0 - Cross-Site Scripting via Email Attachment Content-Location Header

Title source: llm

Exploitation Summary

CVE-2018-6882 is actively exploited and listed in the CISA Known Exploited Vulnerabilities (KEV) catalog, added April 19, 2022, with confirmed use in ransomware campaigns. A Nuclei detection template is also available.

Description

Cross-site scripting (XSS) vulnerability in the ZmMailMsgView.getAttachmentLinkHtml function in Zimbra Collaboration Suite (ZCS) before 8.7 Patch 1 and 8.8.x before 8.8.7 might allow remote attackers to inject arbitrary web script or HTML via a Content-Location header in an email attachment.

Nuclei Templates (1)

Zimbra Collaboration Suite - Cross-site Scripting

MEDIUMVERIFIEDby Sourabh-Sahu

References (7)

Core 7

Core References

US Government Resource

https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2018-6882

Mailing List, Third Party Advisory mailing-list x_refsource_fulldisc

http://seclists.org/fulldisclosure/2018/Mar/52

Exploit, Third Party Advisory x_refsource_misc

https://www.securify.nl/advisory/SFY20180101/cross-site-scripting-vulnerability-in-zimbra-collaboration-suite-due-to-the-way-it-handles-attachment-links.html

Permissions Required x_refsource_confirm

https://wiki.zimbra.com/wiki/Zimbra_Releases/8.8.7

Broken Link, Issue Tracking, Permissions Required x_refsource_confirm

https://bugzilla.zimbra.com/show_bug.cgi?id=108786

Broken Link, Third Party Advisory, VDB Entry mailing-list x_refsource_bugtraq

http://www.securityfocus.com/archive/1/541891/100/0/threaded

Vendor Advisory x_refsource_confirm

https://wiki.zimbra.com/wiki/Zimbra_Security_Advisories

Scores

CVSS v3 6.1

EPSS 0.7702

EPSS Percentile 99.0%

Attack Vector NETWORK

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

CISA SSVC

Vulnrichment

Exploitation active

Automatable no

Technical Impact partial

Details

CISA KEV 2022-04-19

VulnCheck KEV 2022-04-14

InTheWild.io 2022-04-14

ENISA EUVD EUVD-2018-18627

Ransomware Use Confirmed

CWE

CWE-79

Status published

Products (9)

synacor/zimbra_collaboration_suite 8.7.0

synacor/zimbra_collaboration_suite 8.8.0

synacor/zimbra_collaboration_suite 8.8.1

synacor/zimbra_collaboration_suite 8.8.2

synacor/zimbra_collaboration_suite 8.8.3

synacor/zimbra_collaboration_suite 8.8.4

synacor/zimbra_collaboration_suite 8.8.5

synacor/zimbra_collaboration_suite 8.8.6

synacor/zimbra_collaboration_suite < 8.7.0

Published Mar 27, 2018

KEV Added Apr 19, 2022

Tracked Since Feb 18, 2026