CVE-2019-5153: moxa awk-3131a_firmware Stack-based Buffer Overflow

Vulnerability summary

CVE-2019-5153 is a critical (CVSS 9.9) Stack-based Buffer Overflow vulnerability in moxa awk-3131a_firmware. EPSS estimates a 4.38% chance of exploitation in the next 30 days, higher than 91.2% of scored vulnerabilities. 1 public exploit is recorded.

Timeline

1. 25-02-2020
   PublishedVulnerability first disclosed.
2. 04-08-2024
   Last modifiedVulnerability information updated.

Description

An exploitable remote code execution vulnerability exists in the iw_webs configuration parsing functionality of the Moxa AWK-3131A firmware version 1.13. A specially crafted user name entry can cause an overflow of an error message buffer, resulting in remote code execution. An attacker can send commands while authenticated as a low privilege user to trigger this vulnerability.

• CWE-121Stack-based Buffer OverflowA stack-based buffer overflow condition is a condition where the buffer being overwritten is allocated on the stack (i.e., is a local variable or, rarely, a parameter to a function).
• CWE-787Out-of-bounds WriteThe product writes data past the end, or before the beginning, of the intended buffer.