Vulnerability · Published May 3, 2024 · Assigned by zdi

CVE-2023-39480Softing Secure Integration Server FileDirectory OPC UA Object Arbitrary File Creation Vulnerability

Medium 4.4

In plain English

A medium-severity security flaw in Secure Integration Server from Softing. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 1.2% (higher than 69% of all known vulnerabilities).

Severity (CVSS 3.0)4.4Medium

Exploit odds (30 days)1.2%top 31.4% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official description

Softing Secure Integration Server FileDirectory OPC UA Object Arbitrary File Creation Vulnerability. This vulnerability allows remote attackers to create arbitrary files on affected installations of Softing Secure Integration Server. Although authentication is required to exploit this vulnerability, the existing authentication mechanism can be bypassed. The specific flaw exists within the handling of FileDirectory OPC UA Objects. The issue results from allowing unauthorized access to the filesystem. An attacker can leverage this in conjunction with other vulnerabilities to execute arbitrary code in the context of root. Was ZDI-CAN-20549.

Affected products (as reported)

Vendor	Product	Versions
Softing	Secure Integration Server	1.22.0.8686

Weakness: CWE-552 · Vector: CVSS:3.0/AV:N/AC:H/PR:H/UI:N/S:U/C:N/I:H/A:N

References

ZDI-23-1062 x_research-advisory