CVE-2018-9518

Published: 10 September 2018

In nfc_llcp_build_sdreq_tlv of llcp_commands.c, there is a possible out of bounds write due to a missing bounds check. This could lead to local escalation of privilege with System execution privileges needed. User interaction is not needed for exploitation. Product: Android. Versions: Android kernel. Android ID: A-73083945.

From the Ubuntu Security Team

It was discovered that a buffer overflow existed in the NFC Logical Link Control Protocol (llcp) implementation in the Linux kernel. An attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code.

Priority

Cvss 3 Severity Score

7.8

Score breakdown

Status

Package	Release	Status
linux Launchpad, Ubuntu, Debian	bionic	Released (4.15.0-34.37)
	cosmic	Not vulnerable (4.17.0-6.7)
	trusty	Released (3.13.0-161.211)
	upstream	Released (4.16~rc3)
	xenial	Released (4.4.0-130.156)
	Patches: Introduced by d9b8d8e19b073096d3609bbd60f82148d128b555 Fixed by fe9c842695e26d8116b61b80bfb905356f07834b
linux-aws Launchpad, Ubuntu, Debian	bionic	Released (4.15.0-1021.21)
	cosmic	Not vulnerable (4.15.0-1021.21)
	trusty	Released (4.4.0-1024.25)
	upstream	Released (4.16~rc3)
	xenial	Released (4.4.0-1062.71)
linux-azure Launchpad, Ubuntu, Debian	bionic	Released (4.15.0-1023.24)
	cosmic	Not vulnerable (4.18.0-1003.3)
	trusty	Not vulnerable (4.15.0-1023.24~14.04.1)
	upstream	Released (4.16~rc3)
	xenial	Released (4.15.0-1023.24~16.04.1)
linux-azure-edge Launchpad, Ubuntu, Debian	bionic	Not vulnerable (4.18.0-1003.3~18.04.1)
	cosmic	Does not exist
	trusty	Does not exist
	upstream	Released (4.16~rc3)
	xenial	Released (4.15.0-1023.24)
linux-euclid Launchpad, Ubuntu, Debian	bionic	Does not exist
	cosmic	Does not exist
	trusty	Does not exist
	upstream	Released (4.16~rc3)
	xenial	Ignored (was needed ESM criteria)
linux-flo Launchpad, Ubuntu, Debian	bionic	Does not exist
	cosmic	Does not exist
	trusty	Does not exist (trusty was ignored [abandoned])
	upstream	Released (4.16~rc3)
	xenial	Ignored (abandoned)
linux-gcp Launchpad, Ubuntu, Debian	bionic	Released (4.15.0-1019.20)
	cosmic	Not vulnerable (4.15.0-1019.20)
	trusty	Does not exist
	upstream	Released (4.16~rc3)
	xenial	Released (4.15.0-1019.20~16.04.1)
linux-gke Launchpad, Ubuntu, Debian	bionic	Does not exist
	cosmic	Does not exist
	trusty	Does not exist
	upstream	Released (4.16~rc3)
	xenial	Ignored (end of standard support)
linux-goldfish Launchpad, Ubuntu, Debian	bionic	Does not exist
	cosmic	Does not exist
	trusty	Does not exist (trusty was ignored [abandoned])
	upstream	Released (4.16~rc3)
	xenial	Ignored (end of life)
linux-grouper Launchpad, Ubuntu, Debian	bionic	Does not exist
	cosmic	Does not exist
	trusty	Does not exist (trusty was ignored [abandoned])
	upstream	Released (4.16~rc3)
	xenial	Does not exist
linux-hwe Launchpad, Ubuntu, Debian	bionic	Not vulnerable
	cosmic	Does not exist
	trusty	Does not exist
	upstream	Released (4.16~rc3)
	xenial	Released (4.15.0-34.37~16.04.1)
linux-hwe-edge Launchpad, Ubuntu, Debian	bionic	Not vulnerable (4.18.0-11.12~18.04.1)
	cosmic	Does not exist
	trusty	Does not exist
	upstream	Released (4.16~rc3)
	xenial	Released (4.15.0-34.37~16.04.1)
linux-kvm Launchpad, Ubuntu, Debian	bionic	Released (4.15.0-1021.21)
	cosmic	Not vulnerable (4.15.0-1021.21)
	trusty	Does not exist
	upstream	Released (4.16~rc3)
	xenial	Released (4.4.0-1029.34)
linux-lts-trusty Launchpad, Ubuntu, Debian	bionic	Does not exist
	cosmic	Does not exist
	trusty	Does not exist
	upstream	Released (4.16~rc3)
	xenial	Does not exist
linux-lts-utopic Launchpad, Ubuntu, Debian	bionic	Does not exist
	cosmic	Does not exist
	trusty	Does not exist (trusty was ignored [end of standard support])
	upstream	Released (4.16~rc3)
	xenial	Does not exist
linux-lts-vivid Launchpad, Ubuntu, Debian	bionic	Does not exist
	cosmic	Does not exist
	trusty	Does not exist (trusty was ignored [end of standard support])
	upstream	Released (4.16~rc3)
	xenial	Does not exist
linux-lts-wily Launchpad, Ubuntu, Debian	bionic	Does not exist
	cosmic	Does not exist
	trusty	Does not exist (trusty was ignored [end of standard support])
	upstream	Released (4.16~rc3)
	xenial	Does not exist
linux-lts-xenial Launchpad, Ubuntu, Debian	bionic	Does not exist
	cosmic	Does not exist
	trusty	Released (4.4.0-130.156~14.04.1)
	upstream	Released (4.16~rc3)
	xenial	Does not exist
linux-maguro Launchpad, Ubuntu, Debian	bionic	Does not exist
	cosmic	Does not exist
	trusty	Does not exist (trusty was ignored [abandoned])
	upstream	Released (4.16~rc3)
	xenial	Does not exist
linux-mako Launchpad, Ubuntu, Debian	bionic	Does not exist
	cosmic	Does not exist
	trusty	Does not exist (trusty was ignored [abandoned])
	upstream	Released (4.16~rc3)
	xenial	Ignored (abandoned)
linux-manta Launchpad, Ubuntu, Debian	bionic	Does not exist
	cosmic	Does not exist
	trusty	Does not exist (trusty was ignored [abandoned])
	upstream	Released (4.16~rc3)
	xenial	Does not exist
linux-oem Launchpad, Ubuntu, Debian	bionic	Released (4.15.0-1018.21)
	cosmic	Not vulnerable (4.15.0-1018.21)
	trusty	Does not exist
	upstream	Released (4.16~rc3)
	xenial	Ignored (end of standard support, was needed)
linux-raspi2 Launchpad, Ubuntu, Debian	bionic	Released (4.15.0-1022.24)
	cosmic	Not vulnerable (4.15.0-1022.24)
	trusty	Does not exist
	upstream	Released (4.16~rc3)
	xenial	Released (4.4.0-1092.100)
linux-snapdragon Launchpad, Ubuntu, Debian	bionic	Not vulnerable
	cosmic	Does not exist
	trusty	Does not exist
	upstream	Released (4.16~rc3)
	xenial	Released (4.4.0-1095.100)

Severity score breakdown

Parameter	Value
Base score	7.8
Attack vector	Local
Attack complexity	Low
Privileges required	Low
User interaction	None
Scope	Unchanged
Confidentiality	High
Integrity impact	High
Availability impact	High
Vector	CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

References

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