CVE-2020-27858: Arcserve D2D getNews XML External Entity Processing Information Disclosure Vulnerability

Published Jan 20, 2021

Updated

This vulnerability allows remote attackers to disclose sensitive information on affected installations of CA Arcserve D2D 16.5. Authentication is not required to exploit this vulnerability. The specific flaw exists within the getNews method. Due to the improper restriction of XML External Entity (XXE) references, a specially-crafted document specifying a URI causes the XML parser to access the URI and embed the contents back into the XML document for further processing. An attacker can leverage this vulnerability to disclose information in the context of SYSTEM. Was ZDI-CAN-11103.

Other sources

This vulnerability allows remote attackers to disclose sensitive information on affected installations of CA Arcserve D2D. Authentication is not required to exploit this vulnerability. The specific flaw exists within the getNews method. Due to the improper restriction of XML External Entity (XXE) references, a specially-crafted document specifying a URI causes the XML parser to access the URI and embed the contents back into the XML document for further processing. An attacker can leverage this vulnerability to disclose information in the context of SYSTEM.

Affected Software

2 affected components

Arcserve D2D=16.5

Arcserve D2D

Event History

Jan 20, 2021

CVE Published

via MITRE·07:35 PM

Data Sourced

via MITRE·07:35 PM

DescriptionSeverityWeakness

Feb 21, 2025

Advisory Published

via ZDI·03:09 PM

Frequently Asked Questions

What is the vulnerability ID of this vulnerability?

The vulnerability ID is CVE-2020-27858.

What is the title of this vulnerability?

The title of this vulnerability is Arcserve D2D getNews XML External Entity Processing Information Disclosure Vulnerability.

What is the affected software?

The affected software is CA Arcserve D2D version 16.5.

How severe is this vulnerability?

This vulnerability has a severity score of 7.5 (high).

How can the vulnerability be exploited?

Remote attackers can exploit this vulnerability to disclose sensitive information on affected installations of CA Arcserve D2D 16.5.