IGEL OS 12 before 12.9.0, 12.8.3 LTS and IGEL OS 11 before 11.11.150 contain a secure boot bypass vulnerability in the GRUB boot stage that allows physically present attackers to gain unauthorized root access by placing an unsigned empty file named igel.conf on a partition. Attackers can exploit GRUB's fail-open signature verification behavior to drop into an interactive GRUB prompt, then boot the device's own kernel with additional command-line arguments to obtain a root shell with the disk unlocked while leaving TPM PCR values unaltered.

IGEL OS 12 before 12.7.6 and IGEL OS 11 before 11.11.150 contain a boot registry parameter injection vulnerability that allows attackers with physical access to execute arbitrary Linux loader parameters by writing to an unencrypted and unsigned configuration area read by the signed bootloader. Attackers can inject malicious kernel command line parameters that execute with boot environment privileges without triggering TPM PCR measurement failures, as the attack does not modify the measured boot code.

IGEL OS contains a use of a key past its expiration date vulnerability that allows for Secure Boot bypass. The igel-flash-driver module improperly verifies a cryptographic signature. Ultimately, a crafted root filesystem can be mounted from an unverified SquashFS image.

A command injection vulnerability exists in IGEL OS versions prior to 11.04.270 within the Secure Terminal and Secure Shadow services. The flaw arises due to improper input sanitization in the handling of specially crafted PROXYCMD commands on TCP ports 30022 and 5900. An unauthenticated attacker with network access to a vulnerable device can inject arbitrary commands, leading to remote code execution with elevated privileges.

NOTE: IGEL OS v10.x has reached end-of-life (EOL) status.

An issue was discovered in the IGEL Universal Management Suite (UMS) 6.07.100. A hardcoded DES key in the PrefDBCredentials class allows an attacker, who has discovered encrypted superuser credentials, to decrypt those credentials using a static 8-byte DES key.

An issue was discovered in the IGEL Universal Management Suite (UMS) 6.07.100. The transmission of cleartext LDAP bind credentials by the cmdmgtloadmgttree command allows an attacker (who can intercept or inspect traffic between an authenticated UMS client and server) to compromise those LDAP bind credentials.

An issue was discovered in the IGEL Universal Management Suite (UMS) 6.07.100. A hardcoded DES key in the LDAPDesPWEncrypter class allows an attacker, who has discovered encrypted LDAP bind credentials, to decrypt those credentials using a static 8-byte DES key.

An issue was discovered in the IGEL Universal Management Suite (UMS) 6.07.100. Insecure permissions for the serverconfig registry key (under JavaSoft\Prefs\de\igel\rm\config in HKEYLOCALMACHINE\SOFTWARE) allow an unprivileged local attacker to read the encrypted dbuser and dbpassword values for the UMS superuser.