Advisory Details

June 20th, 2019

Phoenix Contact Automationworx BCP File Parsing Out-Of-Bounds Read Information Disclosure Vulnerability

ZDI-19-579
ZDI-CAN-7781

CVE ID CVE-2019-12869
CVSS SCORE 3.3, (AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N)
AFFECTED VENDORS Phoenix Contact
AFFECTED PRODUCTS Automationworx
VULNERABILITY DETAILS

This vulnerability allows remote attackers to disclose sensitive information on vulnerable installations of Phoenix Contact Automationworx. 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 parsing of BCP files. The issue results from the lack of proper validation of user-supplied data, which can result in a read past the end of an allocated buffer. An attacker can leverage this in conjunction with other vulnerabilities to execute code in the context of the current process.

ADDITIONAL DETAILS Phoenix Contact has issued an update to correct this vulnerability. More details can be found at:
https://cert.vde.com/en-us/advisories/vde-2019-014
DISCLOSURE TIMELINE
  • 2019-03-06 - Vulnerability reported to vendor
  • 2019-06-20 - Coordinated public release of advisory
CREDIT 9sg Security Team
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