CVE-2020-35123 : Security Advisory and Response
Learn about CVE-2020-35123, an XXE vulnerability in Zimbra Collaboration Suite Network Edition < 9.0.0 P10 and 8.8.15 P17. Discover impact, affected systems, exploitation, and mitigation steps.
Zimbra Collaboration Suite Network Edition versions < 9.0.0 P10 and 8.8.15 P17 are affected by an XXE vulnerability in the saml consumer store extension.
Understanding CVE-2020-35123
This CVE identifies an XXE vulnerability in specific versions of Zimbra Collaboration Suite Network Edition.
What is CVE-2020-35123?
CVE-2020-35123 is an XML External Entity (XXE) vulnerability found in Zimbra Collaboration Suite Network Edition versions < 9.0.0 P10 and 8.8.15 P17. This vulnerability is present in the saml consumer store extension, making it susceptible to XXE attacks.
The Impact of CVE-2020-35123
The vulnerability allows attackers to exploit the XML parsing capabilities of the affected software, potentially leading to unauthorized access to sensitive data or server-side request forgery (SSRF) attacks.
Technical Details of CVE-2020-35123
This section provides more technical insights into the vulnerability.
Vulnerability Description
The XXE vulnerability in Zimbra Collaboration Suite Network Edition versions < 9.0.0 P10 and 8.8.15 P17 allows malicious actors to manipulate XML input to access sensitive information or execute arbitrary code.
Affected Systems and Versions
- Zimbra Collaboration Suite Network Edition < 9.0.0 P10
- Zimbra Collaboration Suite Network Edition 8.8.15 P17
Exploitation Mechanism
Attackers can exploit this vulnerability by injecting malicious XML content into the application, tricking it into processing the crafted input and executing unauthorized actions.
Mitigation and Prevention
Protecting systems from CVE-2020-35123 requires immediate actions and long-term security measures.
Immediate Steps to Take
- Apply the necessary patches provided by Zimbra Collaboration Suite to mitigate the vulnerability.
- Monitor network traffic for any suspicious activities that could indicate exploitation attempts.
Long-Term Security Practices
- Regularly update and patch software to address known vulnerabilities.
- Implement strict input validation mechanisms to prevent XXE attacks and other injection vulnerabilities.
Patching and Updates
Ensure that Zimbra Collaboration Suite Network Edition is updated to version 9.0.0 Patch 10 or 8.8.15 Patch 17 to eliminate the XXE vulnerability.