CVE-2024-45518
Published: 22 October 2024
Summary
CVE-2024-45518 is a high-severity SSRF (CWE-918) vulnerability in Zimbra Collaboration. Its CVSS base score is 8.8 (High).
Operationally, ranked in the top 3.6% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog.
Deeper analysis
CVE-2024-45518 is a server-side request forgery vulnerability in Zimbra Collaboration (ZCS) that stems from improper input sanitization and misconfigured domain whitelisting. It affects versions 10.1.x prior to 10.1.1, 10.0.x prior to 10.0.9, 9.0.0 prior to Patch 41, and 8.8.15 prior to Patch 46. The flaw permits authenticated users to issue unauthorized HTTP requests against internal services and can be chained with command injection or existing cross-site scripting issues to achieve remote code execution.
An attacker with valid credentials can leverage the SSRF to reach internal endpoints, execute commands on affected systems, or escalate to full remote code execution. The CVSS 3.1 base score of 8.8 reflects network-accessible exploitation with low attack complexity and no user interaction required, resulting in high impact to confidentiality, integrity, and availability.
Zimbra security advisories and release notes direct administrators to apply the fixed builds listed above, which address the SSRF through improved input handling and corrected domain controls. The referenced wiki pages at wiki.zimbra.com provide the specific patch details for each affected branch.
EPSS scores for the CVE have reached a peak of 0.2817 with a current value of 0.2558, indicating moderate and sustained exploitation interest following disclosure.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2024-41519
Vulnerability details
An issue was discovered in Zimbra Collaboration (ZCS) 10.1.x before 10.1.1, 10.0.x before 10.0.9, 9.0.0 before Patch 41, and 8.8.15 before Patch 46. It allows authenticated users to exploit Server-Side Request Forgery (SSRF) due to improper input sanitization and misconfigured…
more
domain whitelisting. This issue permits unauthorized HTTP requests to be sent to internal services, which can lead to Remote Code Execution (RCE) by chaining Command Injection within the internal service. When combined with existing XSS vulnerabilities, this SSRF issue can further facilitate Remote Code Execution (RCE).
- CWE(s)
Related Threats
No named actor attribution yet. ATT&CK technique mapping in progress for this CVE.
Affected Assets
Mitigating Controls
Likely Mitigating Controls AI
Per-CVE control mapping for this CVE has not run yet; the list below is derived from the weakness types (CWEs) cited in the NVD entry.
Penetration testing attempts server-side requests to internal resources, identifying SSRF weaknesses for remediation.
Outbound connections to external resources can be monitored and limited at the boundary, reducing SSRF impact.
Validates server-side URLs and resource references to block SSRF attempts.
Detects server-side request forgery through monitoring of unexpected outbound connections.