CVE-2017-1000363

Published: 25 May 2017

Linux drivers/char/lp.c Out-of-Bounds Write. Due to a missing bounds check, and the fact that parport_ptr integer is static, a 'secure boot' kernel command line adversary (can happen due to bootloader vulns, e.g. Google Nexus 6's CVE-2016-10277, where due to a vulnerability the adversary has partial control over the command line) can overflow the parport_nr array in the following code, by appending many (>LP_NO) 'lp=none' arguments to the command line.

From the Ubuntu Security Team

Roee Hay discovered that the parallel port printer driver in the Linux kernel did not properly bounds check passed arguments. A local attacker with write access to the kernel command line arguments could use this to execute arbitrary code.

Priority

Cvss 3 Severity Score

7.8

Score breakdown

Status

Package	Release	Status
linux Launchpad, Ubuntu, Debian	artful	Not vulnerable (4.10.0-26.30)
	trusty	Released (3.13.0-123.172)
	xenial	Released (4.4.0-83.106)
	yakkety	Released (4.8.0-58.63)
	zesty	Released (4.10.0-26.30)
	bionic	Not vulnerable (4.13.0-16.19)
	upstream	Released (4.12~rc2)
	Patches: Introduced by 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 Fixed by 3e21f4af170bebf47c187c1ff8bf155583c9f3b1
linux-armadaxp Launchpad, Ubuntu, Debian	artful	Does not exist
	trusty	Does not exist
	xenial	Does not exist
	yakkety	Does not exist
	zesty	Does not exist
	bionic	Does not exist
	upstream	Released (4.12~rc2)
	This package is not directly supported by the Ubuntu Security Team
linux-aws Launchpad, Ubuntu, Debian	artful	Does not exist
	trusty	Not vulnerable (4.4.0-1002.2)
	xenial	Released (4.4.0-1022.31)
	yakkety	Does not exist
	zesty	Does not exist
	bionic	Not vulnerable (4.15.0-1001.1)
	upstream	Released (4.12~rc2)
linux-azure Launchpad, Ubuntu, Debian	artful	Does not exist
	trusty	Not vulnerable (4.15.0-1023.24~14.04.1)
	xenial	Not vulnerable (4.11.0-1009.9)
	yakkety	Does not exist
	zesty	Does not exist
	bionic	Not vulnerable (4.15.0-1002.2)
	upstream	Released (4.12~rc2)
linux-euclid Launchpad, Ubuntu, Debian	artful	Does not exist
	trusty	Does not exist
	xenial	Ignored (was needed ESM criteria)
	zesty	Does not exist
	bionic	Does not exist
	upstream	Released (4.12~rc2)
linux-flo Launchpad, Ubuntu, Debian	artful	Does not exist
	trusty	Does not exist (trusty was ignored [abandoned])
	xenial	Ignored (abandoned)
	yakkety	Ignored (end of life)
	zesty	Does not exist
	bionic	Does not exist
	upstream	Released (4.12~rc2)
linux-gcp Launchpad, Ubuntu, Debian	artful	Does not exist
	trusty	Does not exist
	xenial	Not vulnerable (4.10.0-1004.4)
	yakkety	Does not exist
	zesty	Does not exist
	bionic	Not vulnerable (4.15.0-1001.1)
	upstream	Released (4.12~rc2)
linux-gke Launchpad, Ubuntu, Debian	artful	Does not exist
	trusty	Does not exist
	xenial	Released (4.4.0-1018.18)
	yakkety	Does not exist
	zesty	Does not exist
	bionic	Does not exist
	upstream	Released (4.12~rc2)
linux-goldfish Launchpad, Ubuntu, Debian	artful	Does not exist
	trusty	Does not exist (trusty was ignored [abandoned])
	xenial	Ignored (end of life, was needed)
	yakkety	Ignored (end of life)
	zesty	Ignored (end of life)
	bionic	Does not exist
	upstream	Released (4.12~rc2)
linux-grouper Launchpad, Ubuntu, Debian	artful	Does not exist
	trusty	Does not exist (trusty was ignored [abandoned])
	xenial	Does not exist
	yakkety	Does not exist
	zesty	Does not exist
	bionic	Does not exist
	upstream	Released (4.12~rc2)
linux-hwe Launchpad, Ubuntu, Debian	artful	Does not exist
	trusty	Does not exist
	xenial	Released (4.8.0-58.63~16.04.1)
	yakkety	Does not exist
	zesty	Does not exist
	upstream	Released (4.12~rc2)
	bionic	Not vulnerable
linux-hwe-edge Launchpad, Ubuntu, Debian	artful	Does not exist
	trusty	Does not exist
	xenial	Released (4.8.0-58.63~16.04.1)
	yakkety	Does not exist
	zesty	Does not exist
	bionic	Released (4.18.0-8.9~18.04.1)
	upstream	Released (4.12~rc2)
linux-kvm Launchpad, Ubuntu, Debian	artful	Does not exist
	trusty	Does not exist
	xenial	Not vulnerable (4.4.0-1004.9)
	zesty	Does not exist
	bionic	Not vulnerable (4.15.0-1002.2)
	upstream	Released (4.12~rc2)
linux-linaro-omap Launchpad, Ubuntu, Debian	artful	Does not exist
	trusty	Does not exist
	xenial	Does not exist
	yakkety	Does not exist
	zesty	Does not exist
	bionic	Does not exist
	upstream	Released (4.12~rc2)
linux-linaro-shared Launchpad, Ubuntu, Debian	artful	Does not exist
	trusty	Does not exist
	xenial	Does not exist
	yakkety	Does not exist
	zesty	Does not exist
	bionic	Does not exist
	upstream	Released (4.12~rc2)
linux-linaro-vexpress Launchpad, Ubuntu, Debian	artful	Does not exist
	trusty	Does not exist
	xenial	Does not exist
	yakkety	Does not exist
	zesty	Does not exist
	bionic	Does not exist
	upstream	Released (4.12~rc2)
linux-lts-quantal Launchpad, Ubuntu, Debian	artful	Does not exist
	trusty	Does not exist
	xenial	Does not exist
	yakkety	Does not exist
	zesty	Does not exist
	bionic	Does not exist
	upstream	Released (4.12~rc2)
	This package is not directly supported by the Ubuntu Security Team
linux-lts-raring Launchpad, Ubuntu, Debian	artful	Does not exist
	trusty	Does not exist
	xenial	Does not exist
	yakkety	Does not exist
	zesty	Does not exist
	bionic	Does not exist
	upstream	Released (4.12~rc2)
linux-lts-saucy Launchpad, Ubuntu, Debian	artful	Does not exist
	trusty	Does not exist
	xenial	Does not exist
	yakkety	Does not exist
	zesty	Does not exist
	bionic	Does not exist
	upstream	Released (4.12~rc2)
	This package is not directly supported by the Ubuntu Security Team
linux-lts-trusty Launchpad, Ubuntu, Debian	artful	Does not exist
	trusty	Does not exist
	xenial	Does not exist
	yakkety	Does not exist
	zesty	Does not exist
	bionic	Does not exist
	upstream	Released (4.12~rc2)
linux-lts-utopic Launchpad, Ubuntu, Debian	artful	Does not exist
	trusty	Does not exist (trusty was ignored [end of standard support])
	xenial	Does not exist
	yakkety	Does not exist
	zesty	Does not exist
	bionic	Does not exist
	upstream	Released (4.12~rc2)
linux-lts-vivid Launchpad, Ubuntu, Debian	artful	Does not exist
	trusty	Ignored (end of life, was needed)
	xenial	Does not exist
	yakkety	Does not exist
	zesty	Does not exist
	bionic	Does not exist
	upstream	Released (4.12~rc2)
linux-lts-wily Launchpad, Ubuntu, Debian	artful	Does not exist
	trusty	Does not exist (trusty was ignored [end of standard support])
	xenial	Does not exist
	yakkety	Does not exist
	zesty	Does not exist
	bionic	Does not exist
	upstream	Released (4.12~rc2)
linux-lts-xenial Launchpad, Ubuntu, Debian	artful	Does not exist
	trusty	Released (4.4.0-83.106~14.04.1)
	xenial	Does not exist
	yakkety	Does not exist
	zesty	Does not exist
	bionic	Does not exist
	upstream	Released (4.12~rc2)
linux-maguro Launchpad, Ubuntu, Debian	artful	Does not exist
	trusty	Does not exist (trusty was ignored [abandoned])
	xenial	Does not exist
	yakkety	Does not exist
	zesty	Does not exist
	bionic	Does not exist
	upstream	Released (4.12~rc2)
linux-mako Launchpad, Ubuntu, Debian	artful	Does not exist
	trusty	Does not exist (trusty was ignored [abandoned])
	xenial	Ignored (abandoned)
	yakkety	Ignored (end of life)
	zesty	Does not exist
	bionic	Does not exist
	upstream	Released (4.12~rc2)
linux-manta Launchpad, Ubuntu, Debian	artful	Does not exist
	trusty	Does not exist (trusty was ignored [abandoned])
	xenial	Does not exist
	yakkety	Does not exist
	zesty	Does not exist
	bionic	Does not exist
	upstream	Released (4.12~rc2)
linux-oem Launchpad, Ubuntu, Debian	artful	Does not exist
	trusty	Does not exist
	xenial	Not vulnerable (4.13.0-1008.9)
	zesty	Does not exist
	bionic	Not vulnerable (4.15.0-1002.3)
	upstream	Released (4.12~rc2)
linux-qcm-msm Launchpad, Ubuntu, Debian	artful	Does not exist
	trusty	Does not exist
	xenial	Does not exist
	yakkety	Does not exist
	zesty	Does not exist
	upstream	Released (4.12~rc2)
	bionic	Does not exist
linux-raspi2 Launchpad, Ubuntu, Debian	artful	Not vulnerable (4.10.0-1010.13)
	trusty	Does not exist
	xenial	Released (4.4.0-1061.69)
	yakkety	Released (4.8.0-1042.46)
	zesty	Released (4.10.0-1010.13)
	bionic	Not vulnerable (4.13.0-1005.5)
	upstream	Released (4.12~rc2)
linux-snapdragon Launchpad, Ubuntu, Debian	artful	Not vulnerable (4.4.0-1063.68)
	trusty	Does not exist
	xenial	Released (4.4.0-1063.68)
	yakkety	Ignored (end of life, was pending)
	zesty	Released (4.4.0-1063.68)
	bionic	Not vulnerable
	upstream	Released (4.12~rc2)
linux-ti-omap4 Launchpad, Ubuntu, Debian	artful	Does not exist
	trusty	Does not exist
	xenial	Does not exist
	yakkety	Does not exist
	zesty	Does not exist
	bionic	Does not exist
	upstream	Released (4.12~rc2)

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:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

References

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