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Vulnerability CVE-2020-12846
Published: 2020-06-03
| 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. |
Type:
CWE-434 (Unrestricted Upload of File with Dangerous Type)
CVSS2 => (AV:N/AC:M/Au:S/C:P/I:P/A:P)
| CVSS Base Score |
Impact Subscore |
Exploitability Subscore |
6/10 |
6.4/10 |
6.8/10 |
| Exploit range |
Attack complexity |
Authentication |
Remote |
Medium |
Single time |
| Confidentiality impact |
Integrity impact |
Availability impact |
Partial |
Partial |
Partial |
References: |
https://wiki.zimbra.com/wiki/Security_Center
https://wiki.zimbra.com/wiki/Zimbra_Releases/9.0.0/P3
https://wiki.zimbra.com/wiki/Zimbra_Security_Advisories
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