| Title | Zimbra Collaboration Suite - Cross-site Scripting |
|---|---|
| Author | Sourabh-Sahu |
| Severity | Medium |
| Impact | Attackers can execute arbitrary JavaScript in victims' browsers via malicious email attachments, potentially stealing session cookies, credentials, or accessing sensitive email data. |
| Remediation | Upgrade to Zimbra Collaboration Suite version 8.7 Patch 1 or 8.8.7 or later. |
| CVSS Score | 6.8 |
| EPSS Score | 0.61776 |
| CVE ID | CVE-2018-6882 |
| CWE ID | CWE-79 |
| Tags | cve cve2018 smtp zimbra collaboration-server intrusive xss kev vkev |
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.
GET /js/zimbraMail/share/model/ZmSettings.js HTTP/1.1
Host: www.victim.com
User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/16.1 Mobile/15E148 Safari/604.1
Connection: close
Accept-Encoding: gzip
POST / HTTP/1.1
Host: www.victim.com
User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:1.9.5.20) Gecko/ Firefox/13.0
Connection: close
Content-Length: 64
Content-Type: application/x-www-form-urlencoded
Cookie: ZM_TEST=true
Accept-Encoding: gzip
loginOp=login&username=PmNsEP&password=l8lbKrML&client=preferred
🔗 Nuclei Template: https://github.com/packetinside/nuclei-templates/blob/main/http/cves/2018/CVE-2018-6882.yaml
🦈 Packet Capture: ⬇️ Download cve-2018-6882.pcap
N/AN/A