CVE-2020-12846
High
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.
SeverityHigh
CVSS8.0
Exploit probability—
Product
Synacor Zimbra Collaboration Suite
PublishedJun 3, 2020
First seenJun 3, 2020
How to fix
Update
- synacor zimbra_collaboration_suite8.8.15 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| synacor zimbra_collaboration_suite | v < 8.8.15, 8.8.15, 9.0.0 | 8.8.15 |
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