CVE-2020-12846
8.0 · HIGHOverview
CVE-2020-12846 is a high-severity vulnerability affecting synacor zimbra_collaboration_suite. It was published on June 3, 2020 and has a CVSS 3.1 base score of 8.0 (HIGH).
This vulnerability has a CVSS 3.1 base score of 8.0, rated HIGH. It can be exploited remotely over the network. Some level of privileges is required for exploitation.
Technical Description
Zimbra before 8.8.15 Patch 10 and 9.x before 9.0.0 Patch 3 allows remote code execution via an avatar file. There is potential abuse of /service/upload servlet in the webmail subsystem. A user can upload executable files (exe,sh,bat,jar) in the Contact section of the mailbox as an avatar image for a contact. A user will receive a "Corrupt File" error, but the file is still uploaded and stored locally in /opt/zimbra/data/tmp/upload/, leaving it open to possible remote execution.
Remediation
Check the references section for vendor advisories and patches from synacor. Update zimbra_collaboration_suite to the latest patched version. 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.
Affected Products
| Vendor | Product | Versions | Status |
|---|---|---|---|
| synacor | zimbra_collaboration_suite | >= 0, < 8.8.15 | Affected |
Frequently Asked Questions
What is CVE-2020-12846?
CVE-2020-12846 is a high-severity vulnerability affecting synacor zimbra_collaboration_suite. It was published on June 3, 2020 and has a CVSS 3.1 base score of 8.0 (HIGH).
How severe is CVE-2020-12846?
This vulnerability has a CVSS 3.1 base score of 8.0, rated HIGH. It can be exploited remotely over the network. Some level of privileges is required for exploitation.
How do I fix or remediate CVE-2020-12846?
Check the references section for vendor advisories and patches from synacor. Update zimbra_collaboration_suite to the latest patched version. 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-2020-12846?
CyberStrike's AI-powered security agents can automatically detect CVE-2020-12846 across your infrastructure using autonomous pentesting, DAST scanning, and HackBrowser. The platform continuously monitors for known vulnerabilities and provides actionable remediation guidance prioritized by real-world exploitability.
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