CVE-2018-6882
What it is
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.
At a glance
- Exploitability
- Can be exploited over the network without logging in, but needs a user to act. Limited direct impact.
- In the wild
- CISA lists this as exploited in real attacks. Treat as urgent.
- Fix
- A patch, advisory or fixed version is referenced. Upgrade or apply it.
Timeline
- ReservedThe CVE id was reserved by its CNA
- PublishedDisclosed publicly on CVE.org and NVD
- 2022-04-19 Exploited in the wildAdded to CISA's Known Exploited Vulnerabilities list
- 2022-05-10 Remediation deadlineCISA's due date for federal agencies to fix it
- Last updatedMost recent change to the record
Why it ranks here
- Exploited in the wild: yes, CISA lists it. This puts it above everything that is not.
- Exploit odds: 29.8% in the next 30 days (EPSS).
- Severity: 6.1 MEDIUM (CVSS).
- Fix: a patch or advisory is linked.
Details
- Published
- Last modified
- Added to CISA KEV
- 2022-04-19
- Exploit probability
- 29.8% · EPSS, next 30 days
- Weakness
- CWE-79 · Cross-site scripting
- Record status
- Analyzed
Affected
- Synacor Zimbra Collaboration Suite < 8.7.0
- 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
Attack profile CVSS 3.1 · 6.1
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- Required
- Scope
- Changed
- Confidentiality
- Low
- Integrity
- Low
- Availability
- None
Raw vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Is it in your code?
Hand this to your coding agent. It searches your project for the affected products and checks versions. Nothing leaves your machine.
Read https://cve-list.com/agent/cve/CVE-2018-6882.md and follow it. Check whether this project is affected by CVE-2018-6882. Read only. Don't change anything and don't upload my code. Tell me yes, no or not sure, with the file as proof.
Fix and advisories
- https://wiki.zimbra.com/wiki/Zimbra_Security_Advisories
- https://wiki.zimbra.com/wiki/Zimbra_Security_Advisories
References
- http://seclists.org/fulldisclosure/2018/Mar/52
- http://www.securityfocus.com/archive/1/541891/100/0/threaded
- https://bugzilla.zimbra.com/show_bug.cgi?id=108786
- https://wiki.zimbra.com/wiki/Zimbra_Releases/8.8.7
- https://wiki.zimbra.com/wiki/Zimbra_Security_Advisories
- https://www.securify.nl/advisory/SFY20180101/cross-site-scripting-vulnerability-in-zimbra-collaboration-suite-due-to-the-way-it-handles-attachment-links.html
- http://seclists.org/fulldisclosure/2018/Mar/52
- http://www.securityfocus.com/archive/1/541891/100/0/threaded
- https://bugzilla.zimbra.com/show_bug.cgi?id=108786
- https://wiki.zimbra.com/wiki/Zimbra_Releases/8.8.7
- https://wiki.zimbra.com/wiki/Zimbra_Security_Advisories
- https://www.securify.nl/advisory/SFY20180101/cross-site-scripting-vulnerability-in-zimbra-collaboration-suite-due-to-the-way-it-handles-attachment-links.html
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2018-6882