CVE-2017-17807
Published: 20 December 2017
The KEYS subsystem in the Linux kernel before 4.14.6 omitted an access-control check when adding a key to the current task's "default request-key keyring" via the request_key() system call, allowing a local user to use a sequence of crafted system calls to add keys to a keyring with only Search permission (not Write permission) to that keyring, related to construct_get_dest_keyring() in security/keys/request_key.c.
From the Ubuntu Security Team
It was discovered that the keyring implementation in the Linux kernel did not properly check permissions when a key request was performed on a task's default keyring. A local attacker could use this to add keys to unauthorized keyrings.
Priority
Status
Package | Release | Status |
---|---|---|
linux
Launchpad, Ubuntu, Debian |
artful |
Released
(4.13.0-38.43)
|
bionic |
Not vulnerable
(4.15.0-10.11)
|
|
trusty |
Released
(3.13.0-144.193)
|
|
upstream |
Released
(4.15~rc3)
|
|
xenial |
Released
(4.4.0-119.143)
|
|
zesty |
Ignored
(end of life)
|
|
Patches:
Introduced by
3e30148c3d524a9c1c63ca28261bc24c457eb07a
|
||
linux-armadaxp
Launchpad, Ubuntu, Debian |
artful |
Does not exist
|
bionic |
Does not exist
|
|
trusty |
Does not exist
|
|
upstream |
Released
(4.15~rc3)
|
|
xenial |
Does not exist
|
|
zesty |
Does not exist
|
|
This package is not directly supported by the Ubuntu Security Team | ||
linux-aws
Launchpad, Ubuntu, Debian |
artful |
Does not exist
|
bionic |
Not vulnerable
(4.15.0-1001.1)
|
|
trusty |
Released
(4.4.0-1016.16)
|
|
upstream |
Released
(4.15~rc3)
|
|
xenial |
Released
(4.4.0-1054.63)
|
|
zesty |
Does not exist
|
|
linux-azure
Launchpad, Ubuntu, Debian |
artful |
Does not exist
|
bionic |
Not vulnerable
(4.15.0-1002.2)
|
|
trusty |
Not vulnerable
(4.15.0-1023.24~14.04.1)
|
|
upstream |
Released
(4.15~rc3)
|
|
xenial |
Released
(4.13.0-1014.17)
|
|
zesty |
Does not exist
|
|
linux-euclid
Launchpad, Ubuntu, Debian |
artful |
Does not exist
|
bionic |
Does not exist
|
|
trusty |
Does not exist
|
|
upstream |
Released
(4.15~rc3)
|
|
xenial |
Ignored
(was needed ESM criteria)
|
|
zesty |
Does not exist
|
|
linux-flo
Launchpad, Ubuntu, Debian |
artful |
Does not exist
|
bionic |
Does not exist
|
|
trusty |
Does not exist
(trusty was ignored [abandoned])
|
|
upstream |
Released
(4.15~rc3)
|
|
xenial |
Ignored
(abandoned)
|
|
zesty |
Does not exist
|
|
linux-gcp
Launchpad, Ubuntu, Debian |
artful |
Does not exist
|
bionic |
Not vulnerable
(4.15.0-1001.1)
|
|
trusty |
Does not exist
|
|
upstream |
Released
(4.15~rc3)
|
|
xenial |
Released
(4.13.0-1012.16)
|
|
zesty |
Does not exist
|
|
linux-gke
Launchpad, Ubuntu, Debian |
artful |
Does not exist
|
bionic |
Does not exist
|
|
trusty |
Does not exist
|
|
upstream |
Released
(4.15~rc3)
|
|
xenial |
Ignored
(end of standard support, was needed)
|
|
zesty |
Does not exist
|
|
linux-goldfish
Launchpad, Ubuntu, Debian |
artful |
Does not exist
|
bionic |
Does not exist
|
|
trusty |
Does not exist
(trusty was ignored [abandoned])
|
|
upstream |
Released
(4.15~rc3)
|
|
xenial |
Ignored
(end of life, was needed)
|
|
zesty |
Ignored
(end of life)
|
|
linux-grouper
Launchpad, Ubuntu, Debian |
artful |
Does not exist
|
bionic |
Does not exist
|
|
trusty |
Does not exist
(trusty was ignored [abandoned])
|
|
upstream |
Released
(4.15~rc3)
|
|
xenial |
Does not exist
|
|
zesty |
Does not exist
|
|
linux-hwe
Launchpad, Ubuntu, Debian |
artful |
Does not exist
|
bionic |
Not vulnerable
|
|
trusty |
Does not exist
|
|
upstream |
Released
(4.15~rc3)
|
|
xenial |
Released
(4.13.0-38.43~16.04.1)
|
|
zesty |
Does not exist
|
|
linux-hwe-edge
Launchpad, Ubuntu, Debian |
artful |
Does not exist
|
bionic |
Released
(4.18.0-8.9~18.04.1)
|
|
trusty |
Does not exist
|
|
upstream |
Released
(4.15~rc3)
|
|
xenial |
Released
(4.13.0-38.43~16.04.1)
|
|
zesty |
Does not exist
|
|
linux-kvm
Launchpad, Ubuntu, Debian |
artful |
Does not exist
|
bionic |
Not vulnerable
(4.15.0-1002.2)
|
|
trusty |
Does not exist
|
|
upstream |
Released
(4.15~rc3)
|
|
xenial |
Released
(4.4.0-1020.25)
|
|
zesty |
Does not exist
|
|
linux-linaro-omap
Launchpad, Ubuntu, Debian |
artful |
Does not exist
|
bionic |
Does not exist
|
|
trusty |
Does not exist
|
|
upstream |
Released
(4.15~rc3)
|
|
xenial |
Does not exist
|
|
zesty |
Does not exist
|
|
linux-linaro-shared
Launchpad, Ubuntu, Debian |
artful |
Does not exist
|
bionic |
Does not exist
|
|
trusty |
Does not exist
|
|
upstream |
Released
(4.15~rc3)
|
|
xenial |
Does not exist
|
|
zesty |
Does not exist
|
|
linux-linaro-vexpress
Launchpad, Ubuntu, Debian |
artful |
Does not exist
|
bionic |
Does not exist
|
|
trusty |
Does not exist
|
|
upstream |
Released
(4.15~rc3)
|
|
xenial |
Does not exist
|
|
zesty |
Does not exist
|
|
linux-lts-quantal
Launchpad, Ubuntu, Debian |
artful |
Does not exist
|
bionic |
Does not exist
|
|
trusty |
Does not exist
|
|
upstream |
Released
(4.15~rc3)
|
|
xenial |
Does not exist
|
|
zesty |
Does not exist
|
|
This package is not directly supported by the Ubuntu Security Team | ||
linux-lts-raring
Launchpad, Ubuntu, Debian |
artful |
Does not exist
|
bionic |
Does not exist
|
|
trusty |
Does not exist
|
|
upstream |
Released
(4.15~rc3)
|
|
xenial |
Does not exist
|
|
zesty |
Does not exist
|
|
linux-lts-saucy
Launchpad, Ubuntu, Debian |
artful |
Does not exist
|
bionic |
Does not exist
|
|
trusty |
Does not exist
|
|
upstream |
Released
(4.15~rc3)
|
|
xenial |
Does not exist
|
|
zesty |
Does not exist
|
|
This package is not directly supported by the Ubuntu Security Team | ||
linux-lts-trusty
Launchpad, Ubuntu, Debian |
artful |
Does not exist
|
bionic |
Does not exist
|
|
trusty |
Does not exist
|
|
upstream |
Released
(4.15~rc3)
|
|
xenial |
Does not exist
|
|
zesty |
Does not exist
|
|
linux-lts-utopic
Launchpad, Ubuntu, Debian |
artful |
Does not exist
|
bionic |
Does not exist
|
|
trusty |
Does not exist
(trusty was ignored [end of standard support])
|
|
upstream |
Released
(4.15~rc3)
|
|
xenial |
Does not exist
|
|
zesty |
Does not exist
|
|
linux-lts-vivid
Launchpad, Ubuntu, Debian |
artful |
Does not exist
|
bionic |
Does not exist
|
|
trusty |
Ignored
(end of life, was needs-triage)
|
|
upstream |
Released
(4.15~rc3)
|
|
xenial |
Does not exist
|
|
zesty |
Does not exist
|
|
linux-lts-wily
Launchpad, Ubuntu, Debian |
artful |
Does not exist
|
bionic |
Does not exist
|
|
trusty |
Does not exist
(trusty was ignored [end of standard support])
|
|
upstream |
Released
(4.15~rc3)
|
|
xenial |
Does not exist
|
|
zesty |
Does not exist
|
|
linux-lts-xenial
Launchpad, Ubuntu, Debian |
artful |
Does not exist
|
bionic |
Does not exist
|
|
trusty |
Released
(4.4.0-119.143~14.04.1)
|
|
upstream |
Released
(4.15~rc3)
|
|
xenial |
Does not exist
|
|
zesty |
Does not exist
|
|
linux-maguro
Launchpad, Ubuntu, Debian |
artful |
Does not exist
|
bionic |
Does not exist
|
|
trusty |
Does not exist
(trusty was ignored [abandoned])
|
|
upstream |
Released
(4.15~rc3)
|
|
xenial |
Does not exist
|
|
zesty |
Does not exist
|
|
linux-mako
Launchpad, Ubuntu, Debian |
artful |
Does not exist
|
bionic |
Does not exist
|
|
trusty |
Does not exist
(trusty was ignored [abandoned])
|
|
upstream |
Released
(4.15~rc3)
|
|
xenial |
Ignored
(abandoned)
|
|
zesty |
Does not exist
|
|
linux-manta
Launchpad, Ubuntu, Debian |
artful |
Does not exist
|
bionic |
Does not exist
|
|
trusty |
Does not exist
(trusty was ignored [abandoned])
|
|
upstream |
Released
(4.15~rc3)
|
|
xenial |
Does not exist
|
|
zesty |
Does not exist
|
|
linux-oem
Launchpad, Ubuntu, Debian |
artful |
Does not exist
|
bionic |
Not vulnerable
(4.15.0-1002.3)
|
|
trusty |
Does not exist
|
|
upstream |
Released
(4.15~rc3)
|
|
xenial |
Released
(4.13.0-1022.24)
|
|
zesty |
Does not exist
|
|
linux-qcm-msm
Launchpad, Ubuntu, Debian |
artful |
Does not exist
|
bionic |
Does not exist
|
|
trusty |
Does not exist
|
|
upstream |
Released
(4.15~rc3)
|
|
xenial |
Does not exist
|
|
zesty |
Does not exist
|
|
linux-raspi2
Launchpad, Ubuntu, Debian |
artful |
Released
(4.13.0-1016.17)
|
bionic |
Not vulnerable
(4.15.0-1006.7)
|
|
trusty |
Does not exist
|
|
upstream |
Released
(4.15~rc3)
|
|
xenial |
Released
(4.4.0-1086.94)
|
|
zesty |
Ignored
(end of life)
|
|
linux-snapdragon
Launchpad, Ubuntu, Debian |
artful |
Released
(4.4.0-1088.93)
|
bionic |
Not vulnerable
|
|
trusty |
Does not exist
|
|
upstream |
Released
(4.15~rc3)
|
|
xenial |
Released
(4.4.0-1088.93)
|
|
zesty |
Ignored
(end of life)
|
|
linux-ti-omap4
Launchpad, Ubuntu, Debian |
artful |
Does not exist
|
bionic |
Does not exist
|
|
trusty |
Does not exist
|
|
upstream |
Released
(4.15~rc3)
|
|
xenial |
Does not exist
|
|
zesty |
Does not exist
|
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:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N |
References
- http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=4dca6ea1d9432052afb06baf2e3ae78188a4410b
- https://github.com/torvalds/linux/commit/4dca6ea1d9432052afb06baf2e3ae78188a4410b
- https://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.14.6
- https://ubuntu.com/security/notices/USN-3617-1
- https://ubuntu.com/security/notices/USN-3617-2
- https://ubuntu.com/security/notices/USN-3617-3
- https://ubuntu.com/security/notices/USN-3619-1
- https://ubuntu.com/security/notices/USN-3620-1
- https://ubuntu.com/security/notices/USN-3620-2
- https://ubuntu.com/security/notices/USN-3619-2
- https://ubuntu.com/security/notices/USN-3632-1
- https://www.cve.org/CVERecord?id=CVE-2017-17807
- NVD
- Launchpad
- Debian