CVE-2021-26731 | Nozomi Networks Labs

Summary

Command injection and multiple stack-based buffer overflows vulnerabilities in the modifyUserb_func function of spx_restservice allow an authenticated attacker to execute arbitrary code with the same privileges as the server user (root).

Impact

An authenticated remote attacker would be able to execute arbitrary code with root privileges on the BMC and, potentially, abuse it to also compromise the managed host.

Issue Date

October 21, 2022

Affects

The vulnerability affects: Lanner Inc IAC-AST2500A standard firmware version 1.10.0

CVE Name

CVE-2021-26731

CVSS Details

CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H

CVSS Score

9.1

Solution

Updated BMC firmware versions that fix the issue are available from Lanner technical support

Mitigations

Acknowledgements

Andrea Palanca of Nozomi Networks

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