Advisory Details

April 28th, 2022

Delta Industrial Automation DMARS ScopeConfig File Parsing XML External Entity Processing Information Disclosure Vulnerability

ZDI-22-697
ZDI-CAN-14650

CVE ID CVE-2022-1331
CVSS SCORE 5.5, (AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N)
AFFECTED VENDORS Delta Industrial Automation
AFFECTED PRODUCTS DMARS
VULNERABILITY DETAILS

This vulnerability allows remote attackers to disclose sensitive information on affected installations of Delta Industrial Automation DMARS. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file.

The specific flaw exists within the handling of XML files within Scope Configuration processing. Due to the improper restriction of XML External Entity (XXE) references, a 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 files in the context of the current process.

ADDITIONAL DETAILS Delta Industrial Automation has issued an update to correct this vulnerability. More details can be found at:
https://www.cisa.gov/uscert/ics/advisories/icsa-22-104-01
DISCLOSURE TIMELINE
  • 2021-11-24 - Vulnerability reported to vendor
  • 2022-04-28 - Coordinated public release of advisory
CREDIT kimiya
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