CVE-2020-6994: belden hirschmann_hios

Vulnerability summary

CVE-2020-6994 is a critical (CVSS 9.8) vulnerability in belden hirschmann_hios. EPSS estimates a 1.65% chance of exploitation in the next 30 days, higher than 76.1% of scored vulnerabilities.

Timeline

1. 03-04-2020
   PublishedVulnerability first disclosed.
2. 04-08-2024
   Last modifiedVulnerability information updated.

Description

A buffer overflow vulnerability was found in some devices of Hirschmann Automation and Control HiOS and HiSecOS. The vulnerability is due to improper parsing of URL arguments. An attacker could exploit this vulnerability by specially crafting HTTP requests to overflow an internal buffer. The following devices using HiOS Version 07.0.02 and lower are affected: RSP, RSPE, RSPS, RSPL, MSP, EES, EES, EESX, GRS, OS, RED. The following devices using HiSecOS Version 03.2.00 and lower are affected: EAGLE20/30.

• CWE-12ASP.NET Misconfiguration: Missing Custom Error PageAn ASP .NET application must enable custom error pages in order to prevent attackers from mining information from the framework's built-in responses.
• CWE-120Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')The product copies an input buffer to an output buffer without verifying that the size of the input buffer is less than the size of the output buffer.