CVE-2018-3926: samsung sth-eth-250_firmware Integer Underflow (Wrap or Wraparound)

Vulnerability summary

CVE-2018-3926 is a medium (CVSS 5.5) Integer Underflow (Wrap or Wraparound) vulnerability in samsung sth-eth-250_firmware. EPSS estimates a 0.42% chance of exploitation in the next 30 days, higher than 35% of scored vulnerabilities. 1 public exploit is recorded.

Timeline

1. 28-08-2018
   PublishedVulnerability first disclosed.
2. 17-09-2024
   Last modifiedVulnerability information updated.

Description

An exploitable integer underflow vulnerability exists in the ZigBee firmware update routine of the hubCore binary of the Samsung SmartThings Hub STH-ETH-250 - Firmware version 0.20.17. The hubCore process incorrectly handles malformed files existing in its data directory, leading to an infinite loop, which eventually causes the process to crash. An attacker can send an HTTP request to trigger this vulnerability.

• CWE-191Integer Underflow (Wrap or Wraparound)The product subtracts one value from another, such that the result is less than the minimum allowable integer value, which produces a value that is not equal to the correct result.