CVE-2019-9506 PUBLISHED

The Bluetooth BR/EDR specification up to and including version 5.1 permits sufficiently low encryption key length and does not prevent an attacker from influencing the key length negotiation. This allows practical brute-force attacks (aka "KNOB") that can decrypt traffic and inject arbitrary ciphertext without the victim noticing.

EPSS 4.46% · 89.0th percentile

Risk Scores

EPSS Score
4.46%
89.0th percentile

Affected Products

VendorProductVersions
Ubuntu:16.04:LTSlinux-hwe4.10.0-30.34~16.04.1, 4.10.0-27.30~16.04.2, 4.10.0-28.32~16.04.2
Ubuntu:18.04:LTSlinux-gke-5.05.0.0-1015.15~18.04.1, 5.0.0-1013.13~18.04.1, 5.0.0-1011.11~18.04.1
Ubuntu:18.04:LTSlinux-oracle4.15.0-1007.9, 4.15.0-1017.19, 4.15.0-1008.10
Ubuntu:18.04:LTSlinux-hwe0, 4.18.0-25.26~18.04.1, 5.0.0-23.24~18.04.1
Ubuntu:16.04:LTSlinux-oracle4.15.0-1015.17~16.04.1, 4.15.0-1014.16~16.04.1, 4.15.0-1013.15~16.04.1
Ubuntu:16.04:LTSlinux-gcp4.15.0-1024.25~16.04.2, 4.15.0-1023.24~16.04.1, 4.15.0-1021.22~16.04.1
Ubuntu:Pro:14.04:LTSlinux-aws4.4.0-1002.2, 4.4.0-1052.56, 4.4.0-1050.54
Ubuntu:Pro:FIPS-updates:18.04:LTSlinux-azure-fips4.15.0-1002.2, 0
Ubuntu:18.04:LTSlinux4.15.0-12.13, 4.15.0-13.14, 4.15.0-15.16
Ubuntu:18.04:LTSlinux-aws4.15.0-1029.30, 4.15.0-1025.25, 4.15.0-1023.23
Ubuntu:20.04:LTSlinux-gke5.4.0-1041.43, 5.4.0-1105.112, 5.4.0-1104.111
Ubuntu:Pro:FIPS:18.04:LTSlinux-azure-fips4.15.0-1002.2, 0
Ubuntu:Pro:14.04:LTSlinux-azure4.15.0-1040.44~14.04.1, 4.15.0-1041.45~14.04.1, 4.15.0-1042.46~14.04.1
Ubuntu:18.04:LTSlinux-oem-osp15.0.0-1020.22, 5.0.0-1022.24, 5.0.0-1015.16
Ubuntu:18.04:LTSlinux-gcp4.15.0-1040.42, 4.15.0-1014.14, 4.15.0-1015.15
Ubuntu:Pro:FIPS:18.04:LTSlinux-gcp-fips4.15.0-1001.1, 0
Ubuntu:Pro:14.04:LTSlinux3.13.0-65.105, 3.13.0-63.103, 3.13.0-62.102
Ubuntu:18.04:LTSlinux-snapdragon0, 4.4.0-1077.82, 4.4.0-1078.83
Ubuntu:18.04:LTSlinux-raspi24.15.0-1034.36, 4.15.0-1036.38, 4.15.0-1037.39
Ubuntu:Pro:FIPS:16.04:LTSlinux-fips4.4.0-1005.5, 4.4.0-1003.3, 0

…and 18 more

Timeline

References

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