CVE-2020-27858 : Security Advisory and Response

CA Arcserve D2D 16.5 is affected by a vulnerability that allows remote attackers to disclose sensitive information. This CVE details the impact, technical aspects, and mitigation strategies.

Understanding CVE-2020-27858

This CVE identifies a vulnerability in CA Arcserve D2D 16.5 that enables unauthorized disclosure of information without requiring authentication.

What is CVE-2020-27858?

The vulnerability in CA Arcserve D2D 16.5 allows remote attackers to access sensitive information due to improper handling of XML External Entity (XXE) references.

The Impact of CVE-2020-27858

The vulnerability has a CVSS base score of 7.5, indicating a high severity level with a significant impact on confidentiality.

Technical Details of CVE-2020-27858

CA Arcserve D2D 16.5 vulnerability technical specifics.

Vulnerability Description

The flaw exists in the getNews method, where a specially-crafted document with a URI can manipulate the XML parser to access and embed external content, leading to information disclosure.

Affected Systems and Versions

Product: D2D
Vendor: Arcserve
Version: 16.5

Exploitation Mechanism

Attack Complexity: Low
Attack Vector: Network
Privileges Required: None
User Interaction: None
Scope: Unchanged
Confidentiality Impact: High
Integrity Impact: None
Availability Impact: None

Mitigation and Prevention

Protecting systems from CVE-2020-27858.

Immediate Steps to Take

Apply security patches promptly
Monitor network traffic for suspicious activities
Implement network segmentation to limit exposure

Long-Term Security Practices

Regular security training for employees
Conduct vulnerability assessments and penetration testing
Keep software and systems updated

Patching and Updates

Check for vendor patches and apply them as soon as they are available
Follow best practices for secure coding and configuration