CVE-2019-15983 : Security Advisory and Response

A security flaw in the SOAP API of Cisco Data Center Network Manager (DCNM) allows an authorized remote hacker to gain unauthorized access to confidential information by exploiting XML External Entity (XXE) entries.

Understanding CVE-2019-15983

This CVE involves a vulnerability in the SOAP API of Cisco DCNM that could lead to unauthorized access to sensitive data stored on compromised systems.

What is CVE-2019-15983?

The vulnerability arises due to incorrect handling of XXE entries during the parsing of specific XML files within the SOAP API, enabling attackers with administrative privileges to read arbitrary files on affected devices.

The Impact of CVE-2019-15983

Successful exploitation could grant attackers unauthorized access to confidential information, intensifying the risk due to associated vulnerabilities in the Cisco DCNM Authentication Bypass advisory.

Technical Details of CVE-2019-15983

This section provides detailed technical information about the vulnerability.

Vulnerability Description

The vulnerability in the SOAP API of Cisco DCNM allows attackers to insert malicious XML content into API requests, exploiting XXE entries to read arbitrary files on affected devices.

Affected Systems and Versions

Product: Cisco Data Center Network Manager
Vendor: Cisco
Versions: Unspecified

Exploitation Mechanism

Attack Complexity: Low
Attack Vector: Network
Privileges Required: High
Confidentiality Impact: High
Integrity Impact: None
User Interaction: None
Vector String: CVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N

Mitigation and Prevention

Protecting systems from CVE-2019-15983 requires immediate actions and long-term security practices.

Immediate Steps to Take

Apply vendor-provided patches promptly.
Restrict access to the SOAP API to authorized users only.
Monitor network traffic for any suspicious activity.

Long-Term Security Practices

Regularly update and patch all software and applications.
Conduct security assessments and audits periodically.
Educate users on safe computing practices.

Patching and Updates

Cisco has released patches to address this vulnerability. Ensure timely installation of these patches to mitigate the risk of exploitation.