CVE-2017-8824
Published: 5 December 2017
The dccp_disconnect function in net/dccp/proto.c in the Linux kernel through 4.14.3 allows local users to gain privileges or cause a denial of service (use-after-free) via an AF_UNSPEC connect system call during the DCCP_LISTEN state.
From the Ubuntu Security Team
Mohamed Ghannam discovered a use-after-free vulnerability in the DCCP protocol implementation in the Linux kernel. A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code.
Mitigation
Blacklist the dccp ipv[46] autoloading aliases by adding the following lines to /etc/modprobe.d/blacklist-dccp.conf: alias net-pf-2-proto-0-type-6 off alias net-pf-2-proto-33-type-6 off alias net-pf-10-proto-0-type-6 off alias net-pf-10-proto-33-type-6 off
Priority
Status
Package | Release | Status |
---|---|---|
linux Launchpad, Ubuntu, Debian |
artful |
Released
(4.13.0-36.40)
|
trusty |
Released
(3.13.0-142.191)
|
|
xenial |
Released
(4.4.0-116.140)
|
|
zesty |
Ignored
(end of life, was pending)
|
|
bionic |
Not vulnerable
(4.15.0-10.11)
|
|
upstream |
Released
(4.15~rc3)
|
|
Patches: Introduced by 7c657876b63cb1d8a2ec06f8fc6c37bb8412e66c |
||
linux-armadaxp Launchpad, Ubuntu, Debian |
artful |
Does not exist
|
trusty |
Does not exist
|
|
xenial |
Does not exist
|
|
zesty |
Does not exist
|
|
bionic |
Does not exist
|
|
upstream |
Released
(4.15~rc3)
|
|
This package is not directly supported by the Ubuntu Security Team | ||
linux-flo Launchpad, Ubuntu, Debian |
artful |
Does not exist
|
trusty |
Does not exist
(trusty was ignored [abandoned])
|
|
xenial |
Ignored
(abandoned)
|
|
zesty |
Does not exist
|
|
bionic |
Does not exist
|
|
upstream |
Released
(4.15~rc3)
|
|
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
|
|
zesty |
Does not exist
|
|
bionic |
Does not exist
|
|
upstream |
Released
(4.15~rc3)
|
|
linux-lts-vivid Launchpad, Ubuntu, Debian |
artful |
Does not exist
|
trusty |
Ignored
(end of life, was needs-triage)
|
|
xenial |
Does not exist
|
|
zesty |
Does not exist
|
|
bionic |
Does not exist
|
|
upstream |
Released
(4.15~rc3)
|
|
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
|
|
zesty |
Does not exist
|
|
bionic |
Does not exist
|
|
upstream |
Released
(4.15~rc3)
|
|
linux-lts-xenial Launchpad, Ubuntu, Debian |
artful |
Does not exist
|
trusty |
Released
(4.4.0-116.140~14.04.1)
|
|
xenial |
Does not exist
|
|
zesty |
Does not exist
|
|
bionic |
Does not exist
|
|
upstream |
Released
(4.15~rc3)
|
|
linux-manta Launchpad, Ubuntu, Debian |
artful |
Does not exist
|
trusty |
Does not exist
(trusty was ignored [abandoned])
|
|
xenial |
Does not exist
|
|
zesty |
Does not exist
|
|
bionic |
Does not exist
|
|
upstream |
Released
(4.15~rc3)
|
|
linux-raspi2 Launchpad, Ubuntu, Debian |
artful |
Released
(4.13.0-1014.15)
|
trusty |
Does not exist
|
|
xenial |
Released
(4.4.0-1085.93)
|
|
zesty |
Ignored
(end of life, was pending)
|
|
bionic |
Not vulnerable
(4.15.0-1006.7)
|
|
upstream |
Released
(4.15~rc3)
|
|
linux-snapdragon Launchpad, Ubuntu, Debian |
trusty |
Does not exist
|
xenial |
Released
(4.4.0-1087.92)
|
|
zesty |
Ignored
(end of life)
|
|
artful |
Released
(4.4.0-1088.93)
|
|
bionic |
Not vulnerable
|
|
upstream |
Released
(4.15~rc3)
|
|
linux-aws Launchpad, Ubuntu, Debian |
artful |
Does not exist
|
trusty |
Released
(4.4.0-1014.14)
|
|
xenial |
Released
(4.4.0-1052.61)
|
|
zesty |
Does not exist
|
|
bionic |
Not vulnerable
(4.15.0-1001.1)
|
|
upstream |
Released
(4.15~rc3)
|
|
linux-azure Launchpad, Ubuntu, Debian |
artful |
Does not exist
|
trusty |
Not vulnerable
(4.15.0-1023.24~14.04.1)
|
|
xenial |
Released
(4.13.0-1011.14)
|
|
zesty |
Does not exist
|
|
bionic |
Not vulnerable
(4.15.0-1002.2)
|
|
upstream |
Released
(4.15~rc3)
|
|
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
(4.15~rc3)
|
|
linux-gcp Launchpad, Ubuntu, Debian |
artful |
Does not exist
|
trusty |
Does not exist
|
|
xenial |
Released
(4.13.0-1011.15)
|
|
zesty |
Does not exist
|
|
bionic |
Not vulnerable
(4.15.0-1001.1)
|
|
upstream |
Released
(4.15~rc3)
|
|
linux-gke Launchpad, Ubuntu, Debian |
artful |
Does not exist
|
trusty |
Does not exist
|
|
xenial |
Ignored
(end of standard support, was needed)
|
|
zesty |
Does not exist
|
|
bionic |
Does not exist
|
|
upstream |
Released
(4.15~rc3)
|
|
linux-hwe Launchpad, Ubuntu, Debian |
artful |
Does not exist
|
bionic |
Not vulnerable
|
|
upstream |
Released
(4.15~rc3)
|
|
trusty |
Does not exist
|
|
xenial |
Released
(4.13.0-36.40~16.04.1)
|
|
zesty |
Does not exist
|
|
linux-linaro-omap Launchpad, Ubuntu, Debian |
bionic |
Does not exist
|
upstream |
Released
(4.15~rc3)
|
|
artful |
Does not exist
|
|
trusty |
Does not exist
|
|
xenial |
Does not exist
|
|
zesty |
Does not exist
|
|
linux-ti-omap4 Launchpad, Ubuntu, Debian |
bionic |
Does not exist
|
upstream |
Released
(4.15~rc3)
|
|
artful |
Does not exist
|
|
trusty |
Does not exist
|
|
xenial |
Does not exist
|
|
zesty |
Does not exist
|
|
linux-linaro-shared Launchpad, Ubuntu, Debian |
bionic |
Does not exist
|
upstream |
Released
(4.15~rc3)
|
|
artful |
Does not exist
|
|
trusty |
Does not exist
|
|
xenial |
Does not exist
|
|
zesty |
Does not exist
|
|
linux-goldfish Launchpad, Ubuntu, Debian |
bionic |
Does not exist
|
upstream |
Released
(4.15~rc3)
|
|
artful |
Does not exist
|
|
trusty |
Does not exist
(trusty was ignored [abandoned])
|
|
xenial |
Ignored
(end of life, was needed)
|
|
zesty |
Ignored
(end of life)
|
|
linux-grouper Launchpad, Ubuntu, Debian |
bionic |
Does not exist
|
upstream |
Released
(4.15~rc3)
|
|
artful |
Does not exist
|
|
trusty |
Does not exist
(trusty was ignored [abandoned])
|
|
xenial |
Does not exist
|
|
zesty |
Does not exist
|
|
linux-hwe-edge Launchpad, Ubuntu, Debian |
bionic |
Released
(4.18.0-8.9~18.04.1)
|
upstream |
Released
(4.15~rc3)
|
|
artful |
Does not exist
|
|
trusty |
Does not exist
|
|
xenial |
Released
(4.13.0-36.40~16.04.1)
|
|
zesty |
Does not exist
|
|
linux-linaro-vexpress Launchpad, Ubuntu, Debian |
bionic |
Does not exist
|
upstream |
Released
(4.15~rc3)
|
|
artful |
Does not exist
|
|
trusty |
Does not exist
|
|
xenial |
Does not exist
|
|
zesty |
Does not exist
|
|
linux-lts-quantal Launchpad, Ubuntu, Debian |
bionic |
Does not exist
|
upstream |
Released
(4.15~rc3)
|
|
artful |
Does not exist
|
|
trusty |
Does not exist
|
|
xenial |
Does not exist
|
|
zesty |
Does not exist
|
|
This package is not directly supported by the Ubuntu Security Team | ||
linux-kvm Launchpad, Ubuntu, Debian |
bionic |
Not vulnerable
(4.15.0-1002.2)
|
upstream |
Released
(4.15~rc3)
|
|
artful |
Does not exist
|
|
trusty |
Does not exist
|
|
xenial |
Released
(4.4.0-1019.24)
|
|
zesty |
Does not exist
|
|
linux-oem Launchpad, Ubuntu, Debian |
bionic |
Not vulnerable
(4.15.0-1002.3)
|
upstream |
Released
(4.15~rc3)
|
|
artful |
Does not exist
|
|
trusty |
Does not exist
|
|
xenial |
Released
(4.13.0-1021.23)
|
|
zesty |
Does not exist
|
|
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-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-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
|
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://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-8824
- http://lists.openwall.net/netdev/2017/12/04/224
- http://www.openwall.com/lists/oss-security/2017/12/05/1
- https://git.kernel.org/pub/scm/linux/kernel/git/davem/net.git/commit/?id=69c64866ce072dea1d1e59a0d61e0f66c0dffb76
- https://ubuntu.com/security/notices/USN-3581-1
- https://ubuntu.com/security/notices/USN-3581-2
- https://ubuntu.com/security/notices/USN-3582-1
- https://ubuntu.com/security/notices/USN-3582-2
- https://ubuntu.com/security/notices/USN-3581-3
- https://ubuntu.com/security/notices/USN-3583-1
- https://ubuntu.com/security/notices/USN-3583-2
- NVD
- Launchpad
- Debian