GNCC GP5 Runtime Integrity Bypass Enables Temporary File System Tampering

A lack of runtime integrity in GNCC GP5 v7.1.76 allows physically-proximate attackers to bypass file system read-only protections and modify system files and binaries for the duration of a boot session via a bind-mount attack.

Weak Hashing Algorithm Allows Root Credential Compromise in GNCC GP5 v7.1.76

GNCC GP5 v7.1.76 was discovered to utilize a weak hashing algorithm to protect the root password, possibly allowing attackers to obtain root credentials and privileges via a bruteforce attack.

GNCC GP5 v7.1.76 was discovered to store sensitive wireless network information in plaintext during routine operations to the serial console. This issue allows physically-proximate attackers to obtain sensitive information, including network credentials, via monitoring the serial UART interface.

Physical proximity boot argument injection yields root access in GNCC GP5 firmware

An issue in the U-Boot component of GNCC GP5 v7.1.76 allows physically-proximate attackers to bypass authentication and gain root access via interrupting the boot sequence and injecting a crafted string into the kernel boot arguments.

Plaintext Exposure of Backblaze B2 Upload Tokens via Serial Console

GNCC GP5 v7.1.76 was discovered to store pre-signed Backblaze B2 upload URLs (PUT requests) in plaintext to the serial console. This allows physically-proximate attackers to extract these active tokens to perform unauthorized operations via monitoring the serial UART interface.

Residual Cryptographic Material After Factory Reset in GNCC GP5

The factory reset functionality in GNCC GP5 v7.1.76 fails to clear sensitive cryptographic material in the JFFS2 configuration partition, possibly allowing attackers to recover and obtain sensitive user data.