Cve20207796 Zimbra Collaboration Suite Full _top_ 【OFFICIAL】

To secure your environment, the following actions are recommended:

Attackers can bypass firewalls to access sensitive internal resources or metadata services.

| CVE | Type | Auth Required | Impact | |-----|------|---------------|--------| | CVE-2020-27988 | Path traversal to mail read | No | Unauthenticated mail fetch | | CVE-2020-28016 | SSRF via proxy | No | Internal port scanning, limited info leak | | | RCE via extension/proxy | No | Full system compromise |

If patching cannot be executed immediately, administrators can remove the specific exposed file manually to stop the exploit vector: cve20207796 zimbra collaboration suite full

To secure your Zimbra Collaboration Suite installation, consider the following:

While 2020 saw several high-profile vulnerabilities in Zimbra (notably CVE-2020-27988 and CVE-2020-28016), one flaw stands out for its severity and the chilling simplicity of its exploitation: . This vulnerability, rated Critical (CVSS 9.8) , allows an unauthenticated attacker to achieve full Remote Code Execution (RCE) on the underlying Zimbra server, leading to complete compromise of the email infrastructure.

Massive scanning activity has been tracked by global security firms. To secure your environment, the following actions are

| ZCS Version | Vulnerable? | Patch Level | |-------------|--------------|----------------| | | Yes | < Patch 12 | | 9.0.0 | Yes | < Patch 4 | | 8.8.15 P12+ | No | Fixed | | 9.0.0 P4+ | No | Fixed | | 10.x | Not affected (different architecture) | N/A |

. This vulnerability allows an unauthenticated, remote attacker to coerce the targeted mail server into executing arbitrary HTTP requests to internal or external infrastructure. Because enterprise mail servers sit on a highly trusted boundary within a corporate network, exploiting this security flaw can lead directly to cloud credential theft, internal network mapping, and further remote code execution. 🔍 Technical Analysis of the Vulnerability The Root Cause: Insufficient Input Validation

The permanent fix is to apply Zimbra Collaboration 8.8.15 Patch 7 or a later supported version. The patch handles the removal of the vulnerable JSP file. Massive scanning activity has been tracked by global

: If you cannot patch immediately, consider disabling the WebEx zimlet or zimlet JSP functionality if they are not critical to your operations. For more details on official patches, refer to the Zimbra Wiki Security Center for Zimbra 8.8.15? Zimbra Collaboration Suite SSRF (CVE-2020-7796) - Acunetix

The path traversal vulnerability is considered due to its potentially catastrophic impact. The ability to write arbitrary files to a server is, in many ways, the precursor to a complete system takeover. For an organization, a successful exploit can lead to:

: An attacker does not need a username or password to exploit this flaw; it can be triggered remotely by anyone with access to the server’s web interface. High Severity : With a CVSS score often rated as 9.8 (Critical)

She crafts a SOAP request to localhost:7071 asking for an auth token for admin@logi-core.local . The SSRF replies with a valid admin session key.