CVE-2012-2123

Published: 19 April 2012

The cap_bprm_set_creds function in security/commoncap.c in the Linux kernel before 3.3.3 does not properly handle the use of file system capabilities (aka fcaps) for implementing a privileged executable file, which allows local users to bypass intended personality restrictions via a crafted application, as demonstrated by an attack that uses a parent process to disable ASLR.

From the Ubuntu Security Team

Steve Grubb reported a flaw with Linux fscaps (file system base capabilities) when used to increase the permissions of a process. For application on which fscaps are in use a local attacker can disable address space randomization to make attacking the process with raised privileges easier.

Priority

Status

Package	Release	Status
linux Launchpad, Ubuntu, Debian	hardy	Not vulnerable
	lucid	Released (2.6.32-41.89)
	natty	Released (2.6.38-15.60)
	oneiric	Released (3.0.0-20.34)
	precise	Released (3.2.0-24.38)
	quantal	Not vulnerable (3.4.0-1.1)
	raring	Not vulnerable (3.7.0-0.5)
	saucy	Not vulnerable (3.9.0-0.2)
	trusty	Not vulnerable (3.11.0-12.19)
	upstream	Released (3.4~rc4)
	utopic	Not vulnerable (3.13.0-24.46)
	vivid	Not vulnerable (3.16.0-23.31)
	wily	Not vulnerable (3.19.0-15.15)
	xenial	Not vulnerable (4.2.0-16.19)
	yakkety	Not vulnerable (4.4.0-21.37)
	zesty	Not vulnerable (4.8.0-22.24)
	Patches: Introduced by 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 Fixed by d52fc5dde171f030170a6cb78034d166b13c9445
linux-armadaxp Launchpad, Ubuntu, Debian	hardy	Does not exist
	lucid	Does not exist
	natty	Does not exist
	oneiric	Does not exist
	precise	Does not exist (precise was released [3.2.0-1603.6])
	quantal	Not vulnerable (3.2.0-1603.6)
	raring	Does not exist
	saucy	Does not exist
	trusty	Does not exist
	upstream	Released (3.4~rc4)
	utopic	Does not exist
	vivid	Does not exist
	wily	Does not exist
	xenial	Does not exist
	yakkety	Does not exist
	zesty	Does not exist
linux-aws Launchpad, Ubuntu, Debian	precise	Does not exist
	trusty	Not vulnerable (4.4.0-1002.2)
	upstream	Released (3.4~rc4)
	xenial	Not vulnerable (4.4.0-1001.10)
	yakkety	Does not exist
	zesty	Does not exist
linux-ec2 Launchpad, Ubuntu, Debian	hardy	Does not exist
	lucid	Released (2.6.32-345.48)
	natty	Does not exist
	oneiric	Does not exist
	precise	Does not exist
	quantal	Does not exist
	raring	Does not exist
	saucy	Does not exist
	trusty	Does not exist
	upstream	Released (3.4~rc4)
	utopic	Does not exist
	vivid	Does not exist
	wily	Does not exist
	xenial	Does not exist
	yakkety	Does not exist
	zesty	Does not exist
linux-flo Launchpad, Ubuntu, Debian	lucid	Does not exist
	precise	Does not exist
	quantal	Does not exist
	saucy	Does not exist
	trusty	Does not exist (trusty was not-affected [3.4.0-1.3])
	upstream	Released (3.4~rc4)
	utopic	Not vulnerable (3.4.0-3.10)
	vivid	Not vulnerable (3.4.0-3.15)
	wily	Not vulnerable (3.4.0-4.18)
	xenial	Not vulnerable (3.4.0-5.22)
	yakkety	Not vulnerable (3.4.0-3.15)
	zesty	Does not exist
linux-fsl-imx51 Launchpad, Ubuntu, Debian	hardy	Does not exist
	lucid	Ignored (reached end-of-life)
	natty	Does not exist
	oneiric	Does not exist
	precise	Does not exist
	quantal	Does not exist
	raring	Does not exist
	saucy	Does not exist
	trusty	Does not exist
	upstream	Released (3.4~rc4)
	utopic	Does not exist
	vivid	Does not exist
	wily	Does not exist
	xenial	Does not exist
	yakkety	Does not exist
	zesty	Does not exist
linux-gke Launchpad, Ubuntu, Debian	precise	Does not exist
	trusty	Does not exist
	upstream	Released (3.4~rc4)
	xenial	Not vulnerable (4.4.0-1003.3)
	yakkety	Does not exist
	zesty	Does not exist
linux-goldfish Launchpad, Ubuntu, Debian	lucid	Does not exist
	precise	Does not exist
	quantal	Does not exist
	saucy	Ignored
	trusty	Does not exist (trusty was not-affected [3.4.0-1.9])
	upstream	Released (3.4~rc4)
	utopic	Not vulnerable (3.4.0-3.14)
	vivid	Not vulnerable (3.4.0-4.23)
	wily	Not vulnerable (3.4.0-4.24)
	xenial	Not vulnerable (3.4.0-4.27)
	yakkety	Not vulnerable (3.4.0-4.27)
	zesty	Not vulnerable (3.4.0-4.27)
linux-grouper Launchpad, Ubuntu, Debian	lucid	Does not exist
	precise	Does not exist
	quantal	Does not exist
	saucy	Ignored
	trusty	Does not exist (trusty was ignored [abandoned])
	upstream	Released (3.4~rc4)
	utopic	Ignored (reached end-of-life)
	vivid	Does not exist
	wily	Does not exist
	xenial	Does not exist
	yakkety	Does not exist
	zesty	Does not exist
linux-hwe Launchpad, Ubuntu, Debian	precise	Does not exist
	trusty	Does not exist
	upstream	Released (3.4~rc4)
	xenial	Not vulnerable (4.8.0-36.36~16.04.1)
	yakkety	Does not exist
	zesty	Does not exist
linux-hwe-edge Launchpad, Ubuntu, Debian	precise	Does not exist
	trusty	Does not exist
	upstream	Released (3.4~rc4)
	xenial	Not vulnerable (4.8.0-36.36~16.04.1)
	yakkety	Does not exist
	zesty	Does not exist
linux-lts-backport-maverick Launchpad, Ubuntu, Debian	hardy	Does not exist
	lucid	Ignored (reached end-of-life)
	natty	Does not exist
	oneiric	Does not exist
	precise	Does not exist
	quantal	Does not exist
	raring	Does not exist
	saucy	Does not exist
	trusty	Does not exist
	upstream	Released (3.4~rc4)
	utopic	Does not exist
	vivid	Does not exist
	wily	Does not exist
	xenial	Does not exist
	yakkety	Does not exist
	zesty	Does not exist
linux-lts-backport-natty Launchpad, Ubuntu, Debian	hardy	Does not exist
	lucid	Released (2.6.38-15.60~lucid1)
	natty	Does not exist
	oneiric	Does not exist
	precise	Does not exist
	quantal	Does not exist
	raring	Does not exist
	saucy	Does not exist
	trusty	Does not exist
	upstream	Released (3.4~rc4)
	utopic	Does not exist
	vivid	Does not exist
	wily	Does not exist
	xenial	Does not exist
	yakkety	Does not exist
	zesty	Does not exist
linux-lts-backport-oneiric Launchpad, Ubuntu, Debian	hardy	Does not exist
	lucid	Released (3.0.0-20.34~lucid1)
	natty	Does not exist
	oneiric	Does not exist
	precise	Does not exist
	quantal	Does not exist
	raring	Does not exist
	saucy	Does not exist
	trusty	Does not exist
	upstream	Released (3.4~rc4)
	utopic	Does not exist
	vivid	Does not exist
	wily	Does not exist
	xenial	Does not exist
	yakkety	Does not exist
	zesty	Does not exist
linux-lts-quantal Launchpad, Ubuntu, Debian	hardy	Does not exist
	lucid	Does not exist
	oneiric	Does not exist
	precise	Does not exist (precise was not-affected [3.5.0-18.29~precise1])
	quantal	Does not exist
	raring	Does not exist
	saucy	Does not exist
	trusty	Does not exist
	upstream	Released (3.4~rc4)
	utopic	Does not exist
	vivid	Does not exist
	wily	Does not exist
	xenial	Does not exist
	yakkety	Does not exist
	zesty	Does not exist
linux-lts-raring Launchpad, Ubuntu, Debian	hardy	Does not exist
	lucid	Does not exist
	oneiric	Does not exist
	precise	Does not exist (precise was not-affected [3.8.0-19.30~precise1])
	quantal	Does not exist
	raring	Does not exist
	saucy	Does not exist
	trusty	Does not exist
	upstream	Released (3.4~rc4)
	utopic	Does not exist
	vivid	Does not exist
	wily	Does not exist
	xenial	Does not exist
	yakkety	Does not exist
	zesty	Does not exist
linux-lts-trusty Launchpad, Ubuntu, Debian	lucid	Does not exist
	precise	Not vulnerable (3.13.0-24.46~precise1)
	saucy	Does not exist
	trusty	Does not exist
	upstream	Released (3.4~rc4)
	utopic	Does not exist
	vivid	Does not exist
	wily	Does not exist
	xenial	Does not exist
	yakkety	Does not exist
	zesty	Does not exist
linux-lts-utopic Launchpad, Ubuntu, Debian	lucid	Does not exist
	precise	Does not exist
	trusty	Does not exist (trusty was not-affected [3.16.0-25.33~14.04.2])
	upstream	Released (3.4~rc4)
	utopic	Does not exist
	vivid	Does not exist
	wily	Does not exist
	xenial	Does not exist
	yakkety	Does not exist
	zesty	Does not exist
linux-lts-vivid Launchpad, Ubuntu, Debian	lucid	Does not exist
	precise	Does not exist
	trusty	Does not exist (trusty was not-affected [3.19.0-18.18~14.04.1])
	upstream	Released (3.4~rc4)
	utopic	Does not exist
	vivid	Does not exist
	wily	Does not exist
	xenial	Does not exist
	yakkety	Does not exist
	zesty	Does not exist
linux-lts-wily Launchpad, Ubuntu, Debian	precise	Does not exist
	trusty	Does not exist (trusty was not-affected [4.2.0-18.22~14.04.1])
	upstream	Released (3.4~rc4)
	vivid	Does not exist
	wily	Does not exist
	xenial	Does not exist
	yakkety	Does not exist
	zesty	Does not exist
linux-lts-xenial Launchpad, Ubuntu, Debian	precise	Does not exist
	trusty	Not vulnerable (4.4.0-13.29~14.04.1)
	upstream	Released (3.4~rc4)
	vivid	Does not exist
	wily	Does not exist
	xenial	Does not exist
	yakkety	Does not exist
	zesty	Does not exist
linux-maguro Launchpad, Ubuntu, Debian	lucid	Does not exist
	precise	Does not exist
	quantal	Does not exist
	saucy	Ignored
	trusty	Does not exist (trusty was ignored [abandoned])
	upstream	Released (3.4~rc4)
	utopic	Does not exist
	vivid	Does not exist
	wily	Does not exist
	xenial	Does not exist
	yakkety	Does not exist
	zesty	Does not exist
linux-mako Launchpad, Ubuntu, Debian	lucid	Does not exist
	precise	Does not exist
	quantal	Does not exist
	saucy	Ignored
	trusty	Does not exist (trusty was not-affected [3.4.0-3.21])
	upstream	Released (3.4~rc4)
	utopic	Not vulnerable (3.4.0-5.28)
	vivid	Not vulnerable (3.4.0-5.34)
	wily	Not vulnerable (3.4.0-6.37)
	xenial	Not vulnerable (3.4.0-7.40)
	yakkety	Not vulnerable (3.4.0-5.34)
	zesty	Does not exist
linux-manta Launchpad, Ubuntu, Debian	lucid	Does not exist
	precise	Does not exist
	quantal	Does not exist
	saucy	Ignored
	trusty	Does not exist (trusty was not-affected [3.4.0-4.19])
	upstream	Released (3.4~rc4)
	utopic	Not vulnerable (3.4.0-6.25)
	vivid	Not vulnerable (3.4.0-6.29)
	wily	Not vulnerable (3.4.0-7.32)
	xenial	Does not exist
	yakkety	Does not exist
	zesty	Does not exist
linux-mvl-dove Launchpad, Ubuntu, Debian	hardy	Does not exist
	lucid	Ignored (reached end-of-life)
	natty	Does not exist
	oneiric	Does not exist
	precise	Does not exist
	quantal	Does not exist
	raring	Does not exist
	saucy	Does not exist
	trusty	Does not exist
	upstream	Released (3.4~rc4)
	utopic	Does not exist
	vivid	Does not exist
	wily	Does not exist
	xenial	Does not exist
	yakkety	Does not exist
	zesty	Does not exist
linux-raspi2 Launchpad, Ubuntu, Debian	precise	Does not exist
	trusty	Does not exist
	upstream	Released (3.4~rc4)
	vivid	Does not exist
	wily	Not vulnerable (4.2.0-1008.12)
	xenial	Not vulnerable (4.2.0-1013.19)
	yakkety	Not vulnerable (4.4.0-1009.10)
	zesty	Not vulnerable (4.8.0-1013.15)
linux-snapdragon Launchpad, Ubuntu, Debian	precise	Does not exist
	trusty	Does not exist
	upstream	Released (3.4~rc4)
	wily	Does not exist
	xenial	Not vulnerable (4.4.0-1012.12)
	yakkety	Not vulnerable (4.4.0-1012.12)
	zesty	Not vulnerable (4.4.0-1029.32)
linux-ti-omap4 Launchpad, Ubuntu, Debian	hardy	Does not exist
	lucid	Does not exist
	natty	Released (2.6.38-1209.25)
	oneiric	Released (3.0.0-1210.22)
	precise	Does not exist (precise was released [3.2.0-1413.17])
	quantal	Not vulnerable (3.4.0-201.3)
	raring	Not vulnerable (3.4.0-201.3)
	saucy	Not vulnerable (3.5.0-223.34)
	trusty	Does not exist
	upstream	Released (3.4~rc4)
	utopic	Does not exist
	vivid	Does not exist
	wily	Does not exist
	xenial	Does not exist
	yakkety	Does not exist
	zesty	Does not exist

References

Bugs

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