CVE-2024-41996

Fixed in a distro release EPSS 1%CVSS 7.5

Validating the order of the public keys in the Diffie-Hellman Key Agreement Protocol, when an approved safe prime is used, allows remote attackers (from the client side) to trigger unnecessarily expensive server-side DHE modular-exponentiation calculations. The client may cause asymmetric resource consumption. The basic attack scenario is that the client must claim that it can only communicate with DHE, and the server must be configured to allow DHE and validate the order of the public key.

Published 2024-08-26 · CVE record · OSV

Products: diffie-hellman_key_exchange_project diffie-hellman_key_exchange, Siemens RUGGEDCOM RST2428P, Siemens SCALANCE XC-300/XR-300/XC-400/XR-500WG/XR-500 family, Siemens SCALANCE XCH328, Siemens SCALANCE XCM324, Siemens SCALANCE XCM328, Siemens SCALANCE XCM332, Siemens SCALANCE XRH334 (24 V DC, 8xFO, CC), Siemens SCALANCE XRM334 (230 V AC, 12xFO), Siemens SCALANCE XRM334 (230 V AC, 8xFO), Siemens SCALANCE XRM334 (230V AC, 2x10G, 24xSFP, 8xSFP+), Siemens SCALANCE XRM334 (24 V DC, 12xFO), Siemens SCALANCE XRM334 (24 V DC, 8xFO), Siemens SCALANCE XRM334 (24V DC, 2x10G, 24xSFP, 8xSFP+), Siemens SCALANCE XRM334 (2x230 V AC, 12xFO), Siemens SCALANCE XRM334 (2x230 V AC, 8xFO), Siemens SCALANCE XRM334 (2x230V AC, 2x10G, 24xSFP, 8xSFP+), Siemens SIDIS Prime, Siemens SIMATIC S7-1500 TM MFP - GNU/Linux subsystem

Distro releases