CVE-2017-7482
Published: 27 June 2017
In the Linux kernel before version 4.12, Kerberos 5 tickets decoded when using the RXRPC keys incorrectly assumes the size of a field. This could lead to the size-remaining variable wrapping and the data pointer going over the end of the buffer. This could possibly lead to memory corruption and possible privilege escalation.
From the Ubuntu Security Team
石磊 discovered that the RxRPC Kerberos 5 ticket handling code in the Linux kernel did not properly verify metadata. A remote attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code.
Notes
| Author | Note |
|---|---|
| sbeattie |
RxRPC is used for AFS |
Priority
Status
| Package | Release | Status |
|---|---|---|
|
linux
Launchpad, Ubuntu, Debian |
artful |
Not vulnerable
(4.11.0-10.15)
|
| bionic |
Not vulnerable
(4.13.0-16.19)
|
|
| trusty |
Released
(3.13.0-126.175)
|
|
| upstream |
Released
(4.12~rc7)
|
|
| xenial |
Released
(4.4.0-89.112)
|
|
| yakkety |
Ignored
(end of life, was pending)
|
|
| zesty |
Released
(4.10.0-30.34)
|
|
|
Patches:
Introduced by
17926a79320afa9b95df6b977b40cca6d8713cea
|
||
|
linux-armadaxp
Launchpad, Ubuntu, Debian |
artful |
Does not exist
|
| bionic |
Does not exist
|
|
| trusty |
Does not exist
|
|
| upstream |
Released
(4.12~rc7)
|
|
| xenial |
Does not exist
|
|
| yakkety |
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 |
Not vulnerable
(4.4.0-1002.2)
|
|
| upstream |
Released
(4.12~rc7)
|
|
| xenial |
Released
(4.4.0-1028.37)
|
|
| yakkety |
Does not exist
|
|
| 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
(4.12~rc7)
|
|
| xenial |
Not vulnerable
(4.11.0-1009.9)
|
|
| yakkety |
Does not exist
|
|
| zesty |
Does not exist
|
|
|
linux-euclid
Launchpad, Ubuntu, Debian |
artful |
Does not exist
|
| bionic |
Does not exist
|
|
| trusty |
Does not exist
|
|
| upstream |
Released
(4.12~rc7)
|
|
| 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
(4.12~rc7)
|
|
| xenial |
Ignored
(abandoned)
|
|
| yakkety |
Ignored
(end of life)
|
|
| 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
(4.12~rc7)
|
|
| xenial |
Not vulnerable
(4.10.0-1004.4)
|
|
| yakkety |
Does not exist
|
|
| zesty |
Does not exist
|
|
|
linux-gke
Launchpad, Ubuntu, Debian |
artful |
Does not exist
|
| bionic |
Does not exist
|
|
| trusty |
Does not exist
|
|
| upstream |
Released
(4.12~rc7)
|
|
| xenial |
Released
(4.4.0-1024.24)
|
|
| yakkety |
Does not exist
|
|
| 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
(4.12~rc7)
|
|
| xenial |
Ignored
(end of life, was needed)
|
|
| yakkety |
Ignored
(end of life)
|
|
| 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
(4.12~rc7)
|
|
| xenial |
Does not exist
|
|
| yakkety |
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
(4.12~rc7)
|
|
| xenial |
Released
(4.10.0-30.34~16.04.1)
|
|
| yakkety |
Does not exist
|
|
| 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
(4.12~rc7)
|
|
| xenial |
Released
(4.10.0-30.34~16.04.1)
|
|
| yakkety |
Does not exist
|
|
| 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
(4.12~rc7)
|
|
| xenial |
Not vulnerable
(4.4.0-1004.9)
|
|
| zesty |
Does not exist
|
|
|
linux-linaro-omap
Launchpad, Ubuntu, Debian |
artful |
Does not exist
|
| bionic |
Does not exist
|
|
| trusty |
Does not exist
|
|
| upstream |
Released
(4.12~rc7)
|
|
| xenial |
Does not exist
|
|
| yakkety |
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
(4.12~rc7)
|
|
| xenial |
Does not exist
|
|
| yakkety |
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
(4.12~rc7)
|
|
| xenial |
Does not exist
|
|
| yakkety |
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
(4.12~rc7)
|
|
| xenial |
Does not exist
|
|
| yakkety |
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
(4.12~rc7)
|
|
| xenial |
Does not exist
|
|
| yakkety |
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
(4.12~rc7)
|
|
| xenial |
Does not exist
|
|
| yakkety |
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
(4.12~rc7)
|
|
| xenial |
Does not exist
|
|
| yakkety |
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
(4.12~rc7)
|
|
| xenial |
Does not exist
|
|
| yakkety |
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 needed)
|
|
| upstream |
Released
(4.12~rc7)
|
|
| xenial |
Does not exist
|
|
| yakkety |
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
(4.12~rc7)
|
|
| xenial |
Does not exist
|
|
| yakkety |
Does not exist
|
|
| zesty |
Does not exist
|
|
|
linux-lts-xenial
Launchpad, Ubuntu, Debian |
artful |
Does not exist
|
| bionic |
Does not exist
|
|
| trusty |
Released
(4.4.0-89.112~14.04.1)
|
|
| upstream |
Released
(4.12~rc7)
|
|
| xenial |
Does not exist
|
|
| yakkety |
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
(4.12~rc7)
|
|
| xenial |
Does not exist
|
|
| yakkety |
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
(4.12~rc7)
|
|
| xenial |
Ignored
(abandoned)
|
|
| yakkety |
Ignored
(end of life)
|
|
| 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
(4.12~rc7)
|
|
| xenial |
Does not exist
|
|
| yakkety |
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
(4.12~rc7)
|
|
| xenial |
Not vulnerable
(4.13.0-1008.9)
|
|
| zesty |
Does not exist
|
|
|
linux-qcm-msm
Launchpad, Ubuntu, Debian |
artful |
Does not exist
|
| bionic |
Does not exist
|
|
| trusty |
Does not exist
|
|
| upstream |
Released
(4.12~rc7)
|
|
| xenial |
Does not exist
|
|
| yakkety |
Does not exist
|
|
| zesty |
Does not exist
|
|
|
linux-raspi2
Launchpad, Ubuntu, Debian |
artful |
Not vulnerable
(4.10.0-1013.16)
|
| bionic |
Not vulnerable
(4.13.0-1005.5)
|
|
| trusty |
Does not exist
|
|
| upstream |
Released
(4.12~rc7)
|
|
| xenial |
Released
(4.4.0-1067.75)
|
|
| yakkety |
Ignored
(end of life)
|
|
| zesty |
Released
(4.10.0-1013.16)
|
|
|
linux-snapdragon
Launchpad, Ubuntu, Debian |
artful |
Not vulnerable
(4.4.0-1069.74)
|
| bionic |
Not vulnerable
|
|
| trusty |
Does not exist
|
|
| upstream |
Released
(4.12~rc7)
|
|
| xenial |
Released
(4.4.0-1069.74)
|
|
| yakkety |
Ignored
(end of life)
|
|
| zesty |
Released
(4.4.0-1069.74)
|
|
|
linux-ti-omap4
Launchpad, Ubuntu, Debian |
artful |
Does not exist
|
| bionic |
Does not exist
|
|
| trusty |
Does not exist
|
|
| upstream |
Released
(4.12~rc7)
|
|
| xenial |
Does not exist
|
|
| yakkety |
Does not exist
|
|
| zesty |
Does not exist
|
|
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
- https://git.kernel.org/torvalds/c/5f2f97656ada8d811d3c1bef503ced266fcd53a0
- http://seclists.org/oss-sec/2017/q2/602
- https://ubuntu.com/security/notices/USN-3377-1
- https://ubuntu.com/security/notices/USN-3377-2
- https://ubuntu.com/security/notices/USN-3378-1
- https://ubuntu.com/security/notices/USN-3378-2
- https://ubuntu.com/security/notices/USN-3381-1
- https://ubuntu.com/security/notices/USN-3381-2
- https://www.cve.org/CVERecord?id=CVE-2017-7482
- NVD
- Launchpad
- Debian