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.
This vulnerability carries a HIGH severity rating with a CVSS v3.1 score of 8.0, indicating it can be exploited remotely over the network with relatively low complexity though user interaction is required requiring only low-level privileges . The vulnerability impacts confidentiality (data exposure), integrity (unauthorized modifications), and availability (service disruption) for affected systems. Impacting 1 product from synacor organizations running these solutions should prioritize assessment and patching.
Reported in 2020, this vulnerability emerged during an era marked by increased sophistication in supply chain attacks, cloud infrastructure vulnerabilities, and software-as-a-service (SaaS) security challenges. Security practices during this period emphasized zero-trust architectures, container security, and API protection.
2020-06-03T17:15:24.793
2024-11-21T05:00:23.700
Modified
CVSSv3.1: 8.0 (HIGH)
AV:N/AC:M/Au:S/C:P/I:P/A:P
6.8
6.4
| Type | Vendor | Product | Version/Range | Vulnerable? |
|---|---|---|---|---|
| Application | synacor | zimbra_collaboration_suite | < 8.8.15 | Yes |
| Application | synacor | zimbra_collaboration_suite | 8.8.15 | Yes |
| Application | synacor | zimbra_collaboration_suite | 8.8.15 | Yes |
| Application | synacor | zimbra_collaboration_suite | 8.8.15 | Yes |
| Application | synacor | zimbra_collaboration_suite | 8.8.15 | Yes |
| Application | synacor | zimbra_collaboration_suite | 8.8.15 | Yes |
| Application | synacor | zimbra_collaboration_suite | 8.8.15 | Yes |
| Application | synacor | zimbra_collaboration_suite | 8.8.15 | Yes |
| Application | synacor | zimbra_collaboration_suite | 8.8.15 | Yes |
| Application | synacor | zimbra_collaboration_suite | 8.8.15 | Yes |
| Application | synacor | zimbra_collaboration_suite | 8.8.15 | Yes |
| Application | synacor | zimbra_collaboration_suite | 9.0.0 | Yes |
| Application | synacor | zimbra_collaboration_suite | 9.0.0 | Yes |
| Application | synacor | zimbra_collaboration_suite | 9.0.0 | Yes |
SecUtils normalizes and enriches National Vulnerability Database (NVD) records by standardizing vendor and product identifiers, aggregating vulnerability metadata from both NVD and MITRE sources, and providing structured context for security teams. For synacor's affected products, we extract Common Platform Enumeration (CPE) data, Common Weakness Enumeration (CWE) classifications, CVSS severity metrics, and reference data to enable rapid vulnerability prioritization and asset correlation. This record contains no exploit code, proof-of-concept instructions, or attack methodologies—only defensive intelligence necessary for patch management, risk assessment, and security operations.