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Advisories

Lantronix Autonomous Out-of-Band Devices Stack-Based Buffer Overflow via mfc eeprom write

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severity
critical
date
Affecting

  • SLC8000 < 9.7.0.2

  • EMG8500 < 9.7.0.1

  • EMG7500 < 9.7.0.1

  • SLB882 - all versions

  • SLCx-03 - all versions

  • SLCx-02 - all versions

CWE
  • CWE-121 Stack-based Buffer Overflow
CVSS
9.4
CVSS V4 Vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H
Credit
RE/VRb
Description
Lantronix SLC8000 before firmware v9.7.0.2, EMG8500/EMG7500 before firmware v9.7.0.1, and all firmware versions of SLB882/SLCx-03/SLCx-02 contain a stack-based buffer overflow vulnerability that allows authenticated attackers to potentially execute arbitrary code by exploiting an undocumented mfc eeprom write command that copies unbounded user input into a bounded stack buffer before passing it to a system() call. Attackers can authenticate as any user to the terminal or CLI interface and supply an oversized input to trigger the overflow, potentially achieving complete loss of confidentiality, integrity, and availability on the affected device and impacting downstream serial-attached devices.

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