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Advisories

Johnson Controls TL280 < 5.63 Weak Encryption and Replay Attack via ITv2 Protocol

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severity
medium
date
Affecting

  • TL280 firmware < 5.63

CWE
  • CWE-798 Use of Hard-coded Credentials
CVSS
6.3
CVSS V4 Vector
CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N
Credit
z
Description
Johnson Controls TL280 firmware before 5.63 contains a weak cryptographic implementation vulnerability that allows network attackers to decrypt sensitive communications by exploiting AES-ECB mode with a fixed default key and no replay protection in the ITv2 protocol. Attackers who observe the initial handshake can recover the negotiated session key to decrypt arm/disarm PIN codes, installer programming codes, and sensor events, and can replay captured disarm commands to silently disarm the panel without any credentials.

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