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CVE-2018-6882

6.1 · MEDIUMActively Exploited

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 attacke…

Published Mar 27, 2018CWE-79EPSS 29.76%

Overview

CVE-2018-6882 is a medium-severity vulnerability. It was published on March 27, 2018 and has a CVSS 3.1 base score of 6.1 (MEDIUM). This vulnerability is listed in CISA's Known Exploited Vulnerabilities catalog, indicating active exploitation in the wild.

This vulnerability has a CVSS 3.1 base score of 6.1, rated MEDIUM. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical 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.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

Refseclists.org/fulldisclosure/2018/Mar/52Refwww.securityfocus.com/archive/1/541891/100/0/threadedRefbugzilla.zimbra.com/show_bug.cgi?id=108786Refwiki.zimbra.com/wiki/Zimbra_Releases/8.8.7Refwiki.zimbra.com/wiki/Zimbra_Security_AdvisoriesRefwww.securify.nl/advisory/SFY20180101/cross-site-scripting-vulnerability-in-zimbra-collaboration-suite-due-to-the-way-it-handles-attachment-links.htmlRefseclists.org/fulldisclosure/2018/Mar/52Refwww.securityfocus.com/archive/1/541891/100/0/threadedRefbugzilla.zimbra.com/show_bug.cgi?id=108786Refwiki.zimbra.com/wiki/Zimbra_Releases/8.8.7

How CyberStrike helps

Frequently asked questions

What is CVE-2018-6882?

CVE-2018-6882 is a medium-severity vulnerability. It was published on March 27, 2018 and has a CVSS 3.1 base score of 6.1 (MEDIUM). This vulnerability is listed in CISA's Known Exploited Vulnerabilities catalog, indicating active exploitation in the wild.

How severe is CVE-2018-6882?

This vulnerability has a CVSS 3.1 base score of 6.1, rated MEDIUM. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2018-6882?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2018-6882?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2018-6882 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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