CVE-2019-17056

Published: 1 October 2019

llcp_sock_create in net/nfc/llcp_sock.c in the AF_NFC network module in the Linux kernel through 5.3.2 does not enforce CAP_NET_RAW, which means that unprivileged users can create a raw socket, aka CID-3a359798b176.

From the Ubuntu Security Team

Ori Nimron discovered that the Near field Communication (NFC) network protocol implementation in the Linux kernel did not properly perform permissions checks. A local attacker could use this to create a raw socket.

Priority

Cvss 3 Severity Score

3.3

Score breakdown

Status

Package	Release	Status
linux-aws-hwe Launchpad, Ubuntu, Debian	upstream	Released (5.4~rc1)
	trusty	Does not exist
	xenial	Released (4.15.0-1054.56~16.04.1)
	bionic	Does not exist
	disco	Does not exist
	eoan	Does not exist
	focal	Does not exist
linux-azure Launchpad, Ubuntu, Debian	bionic	Released (5.0.0-1025.27~18.04.1)
	disco	Released (5.0.0-1025.27)
	eoan	Not vulnerable (5.3.0-1002.2)
	focal	Not vulnerable (5.4.0-1006.6)
	trusty	Released (4.15.0-1063.68~14.04.1) Available with Ubuntu Pro or Ubuntu Pro (Infra-only)
	upstream	Released (5.4~rc1)
	xenial	Released (4.15.0-1063.68)
linux-aws-5.0 Launchpad, Ubuntu, Debian	upstream	Released (5.4~rc1)
	trusty	Does not exist
	xenial	Does not exist
	bionic	Not vulnerable (5.0.0-1021.24~18.04.1)
	disco	Does not exist
	eoan	Does not exist
	focal	Does not exist
linux-azure-5.3 Launchpad, Ubuntu, Debian	disco	Does not exist
	bionic	Not vulnerable (5.3.0-1007.8~18.04.1)
	eoan	Does not exist
	focal	Does not exist
	trusty	Does not exist
	upstream	Released (5.4~rc1)
	xenial	Does not exist
linux Launchpad, Ubuntu, Debian	bionic	Released (4.15.0-69.78)
	disco	Released (5.0.0-35.38)
	eoan	Not vulnerable (5.3.0-17.18)
	focal	Not vulnerable (5.4.0-9.12)
	trusty	Ignored (was needs-triage ESM criteria)
	upstream	Released (5.4~rc1)
	xenial	Released (4.4.0-168.197)
	Patches: Introduced by 4463523bef98ff827a89cf8219db7dfac4350241 Fixed by 3a359798b176183ef09efb7a3dc59abad1cc7104
linux-aws Launchpad, Ubuntu, Debian	bionic	Released (4.15.0-1054.56)
	disco	Released (5.0.0-1021.24)
	eoan	Not vulnerable (5.3.0-1003.3)
	focal	Not vulnerable (5.4.0-1005.5)
	trusty	Released (4.4.0-1058.62) Available with Ubuntu Pro or Ubuntu Pro (Infra-only)
	upstream	Released (5.4~rc1)
	xenial	Released (4.4.0-1098.109)
linux-azure-edge Launchpad, Ubuntu, Debian	bionic	Ignored (end of life, was pending)
	disco	Does not exist
	eoan	Does not exist
	focal	Does not exist
	trusty	Does not exist
	upstream	Released (5.4~rc1)
	xenial	Released (4.15.0-1063.68)
linux-gcp Launchpad, Ubuntu, Debian	bionic	Released (5.0.0-1025.26~18.04.1)
	disco	Released (5.0.0-1025.26)
	eoan	Not vulnerable (5.3.0-1004.4)
	focal	Not vulnerable (5.4.0-1005.5)
	trusty	Does not exist
	upstream	Released (5.4~rc1)
	xenial	Released (4.15.0-1049.52)
linux-gcp-5.3 Launchpad, Ubuntu, Debian	bionic	Not vulnerable (5.3.0-1008.9~18.04.1)
	disco	Does not exist
	eoan	Does not exist
	focal	Does not exist
	trusty	Does not exist
	upstream	Released (5.4~rc1)
	xenial	Does not exist
linux-gcp-edge Launchpad, Ubuntu, Debian	bionic	Ignored (end of life, was pending)
	disco	Does not exist
	eoan	Does not exist
	focal	Does not exist
	trusty	Does not exist
	upstream	Released (5.4~rc1)
	xenial	Does not exist
linux-gke-4.15 Launchpad, Ubuntu, Debian	bionic	Released (4.15.0-1048.51)
	disco	Does not exist
	eoan	Does not exist
	focal	Does not exist
	trusty	Does not exist
	upstream	Released (5.4~rc1)
	xenial	Does not exist
linux-gke-5.0 Launchpad, Ubuntu, Debian	bionic	Released (5.0.0-1025.26~18.04.1)
	disco	Does not exist
	eoan	Does not exist
	focal	Does not exist
	trusty	Does not exist
	upstream	Released (5.4~rc1)
	xenial	Does not exist
linux-gke-5.3 Launchpad, Ubuntu, Debian	bionic	Not vulnerable (5.3.0-1011.12~18.04.1)
	eoan	Does not exist
	focal	Does not exist
	trusty	Does not exist
	upstream	Released (5.4~rc1)
	xenial	Does not exist
linux-hwe Launchpad, Ubuntu, Debian	bionic	Released (5.0.0-35.38~18.04.1)
	disco	Does not exist
	eoan	Does not exist
	focal	Does not exist
	trusty	Does not exist
	upstream	Released (5.4~rc1)
	xenial	Released (4.15.0-69.78~16.04.1)
linux-hwe-edge Launchpad, Ubuntu, Debian	bionic	Ignored (end of life, was pending)
	disco	Does not exist
	eoan	Does not exist
	focal	Does not exist
	trusty	Does not exist
	upstream	Released (5.4~rc1)
	xenial	Released (4.15.0-69.78~16.04.1)
linux-kvm Launchpad, Ubuntu, Debian	bionic	Released (4.15.0-1050.50)
	disco	Released (5.0.0-1022.24)
	eoan	Not vulnerable (5.3.0-1003.3)
	focal	Not vulnerable (5.4.0-1004.4)
	trusty	Does not exist
	upstream	Released (5.4~rc1)
	xenial	Released (4.4.0-1062.69)
linux-lts-trusty Launchpad, Ubuntu, Debian	bionic	Does not exist
	disco	Does not exist
	eoan	Does not exist
	focal	Does not exist
	trusty	Does not exist
	upstream	Released (5.4~rc1)
	xenial	Does not exist
linux-lts-xenial Launchpad, Ubuntu, Debian	bionic	Does not exist
	disco	Does not exist
	eoan	Does not exist
	focal	Does not exist
	trusty	Released (4.4.0-168.197~14.04.1) Available with Ubuntu Pro or Ubuntu Pro (Infra-only)
	upstream	Released (5.4~rc1)
	xenial	Does not exist
linux-oem Launchpad, Ubuntu, Debian	bionic	Released (4.15.0-1063.72)
	disco	Ignored (end of life)
	eoan	Released (4.15.0-1063.72)
	focal	Does not exist
	trusty	Does not exist
	upstream	Released (5.4~rc1)
	xenial	Ignored (end of standard support, was needs-triage)
linux-oem-5.6 Launchpad, Ubuntu, Debian	bionic	Does not exist
	eoan	Does not exist
	focal	Not vulnerable (5.4.0-1002.4)
	trusty	Does not exist
	upstream	Released (5.4~rc1)
	xenial	Does not exist
linux-oem-osp1 Launchpad, Ubuntu, Debian	bionic	Released (5.0.0-1027.31)
	disco	Ignored (end of life)
	eoan	Released (5.0.0-1027.31)
	focal	Does not exist
	trusty	Does not exist
	upstream	Released (5.4~rc1)
	xenial	Does not exist
linux-oracle Launchpad, Ubuntu, Debian	bionic	Released (4.15.0-1029.32)
	disco	Released (5.0.0-1007.12)
	eoan	Not vulnerable (5.3.0-1002.2)
	focal	Not vulnerable (5.4.0-1005.5)
	trusty	Does not exist
	upstream	Released (5.4~rc1)
	xenial	Released (4.15.0-1029.32~16.04.1)
linux-oracle-5.0 Launchpad, Ubuntu, Debian	bionic	Not vulnerable (5.0.0-1007.12~18.04.1)
	disco	Does not exist
	eoan	Does not exist
	focal	Does not exist
	trusty	Does not exist
	upstream	Released (5.4~rc1)
	xenial	Does not exist
linux-oracle-5.3 Launchpad, Ubuntu, Debian	bionic	Not vulnerable (5.3.0-1011.12~18.04.1)
	eoan	Does not exist
	focal	Does not exist
	trusty	Does not exist
	upstream	Released (5.4~rc1)
	xenial	Does not exist
linux-raspi2 Launchpad, Ubuntu, Debian	bionic	Released (4.15.0-1050.54)
	disco	Released (5.0.0-1022.23)
	eoan	Not vulnerable (5.3.0-1007.8)
	focal	Not vulnerable (5.4.0-1004.4)
	trusty	Does not exist
	upstream	Released (5.4~rc1)
	xenial	Released (4.4.0-1125.134)
linux-raspi2-5.3 Launchpad, Ubuntu, Debian	bionic	Not vulnerable (5.3.0-1017.19~18.04.1)
	eoan	Does not exist
	focal	Does not exist
	trusty	Does not exist
	upstream	Released (5.4~rc1)
	xenial	Does not exist
linux-snapdragon Launchpad, Ubuntu, Debian	bionic	Released (4.15.0-1067.74)
	disco	Ignored (end of life, was pending)
	eoan	Does not exist
	focal	Does not exist
	trusty	Does not exist
	upstream	Released (5.4~rc1)
	xenial	Released (4.4.0-1129.137)

Severity score breakdown

Parameter	Value
Base score	3.3
Attack vector	Local
Attack complexity	Low
Privileges required	Low
User interaction	None
Scope	Unchanged
Confidentiality	None
Integrity impact	Low
Availability impact	None
Vector	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N

References

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