Grandstream HT800 series firmware version 1.0.17.5 and below contain a backdoor in the SSH service. An authenticated remote attacker can obtain a root shell by correctly answering a challenge prompt.
The product is deployed to unauthorized actors with debugging code still enabled or active, which can create unintended entry points or expose sensitive information.
The product stores or transmits sensitive data using an encryption scheme that is theoretically sound, but is not strong enough for the level of protection required.
Link | Tags |
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https://www.tenable.com/security/research/tra-2020-43 | third party advisory exploit |
https://www.tenable.com/security/research/tra-2020-47 | vdb entry third party advisory |