Ubuntu.comUB:CVE-2017-18509CVE-2017-18509
7.2 High
CVSS2
Attack Vector
LOCAL
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
COMPLETE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
AV:L/AC:L/Au:N/C:C/I:C/A:C
7.8 High
CVSS3
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
0.002 Low
EPSS
Percentile
57.7%
An issue was discovered in net/ipv6/ip6mr.c in the Linux kernel before
4.11. By setting a specific socket option, an attacker can control a
pointer in kernel land and cause an inet_csk_listen_stop general protection
fault, or potentially execute arbitrary code under certain circumstances.
The issue can be triggered as root (e.g., inside a default LXC container or
with the CAP_NET_ADMIN capability) or after namespace unsharing. This
occurs because sk_type and protocol are not checked in the appropriate part
of the ip6_mroute_* functions. NOTE: this affects Linux distributions that
use 4.9.x longterm kernels before 4.9.187.
| OS | Version | Architecture | Package | Version | Filename |
|---|---|---|---|---|---|
| ubuntu | 16.04 | noarch | linux | < 4.4.0-165.193 | UNKNOWN |
| ubuntu | 16.04 | noarch | linux-aws | < 4.4.0-1095.106 | UNKNOWN |
| ubuntu | 16.04 | noarch | linux-gcp | < 4.13.0-1002.5 | UNKNOWN |
| ubuntu | 16.04 | noarch | linux-hwe | < 4.13.0-26.29~16.04.2 | UNKNOWN |
| ubuntu | 16.04 | noarch | linux-hwe-edge | < 4.13.0-26.29~16.04.2 | UNKNOWN |
| ubuntu | 16.04 | noarch | linux-kvm | < 4.4.0-1059.66 | UNKNOWN |
| ubuntu | 16.04 | noarch | linux-raspi2 | < 4.4.0-1123.132 | UNKNOWN |
| ubuntu | 18.04 | noarch | linux-snapdragon | < 4.15.0-1053.57 | UNKNOWN |
| ubuntu | 16.04 | noarch | linux-snapdragon | < 4.4.0-1127.135 | UNKNOWN |
References
git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=99253eb750fda6a644d5188fb26c43bad8d5a745
git.kernel.org/linus/99253eb750fda6a644d5188fb26c43bad8d5a745
github.com/torvalds/linux/commit/99253eb750fda6a644d5188fb26c43bad8d5a745
launchpad.net/bugs/cve/CVE-2017-18509
lists.debian.org/debian-lts-announce/2019/08/msg00016.html
lists.openwall.net/netdev/2017/12/04/40
nvd.nist.gov/vuln/detail/CVE-2017-18509
pulsesecurity.co.nz/advisories/linux-kernel-4.9-inetcsklistenstop-gpf
salsa.debian.org/kernel-team/linux/commit/baefcdc2f29923e7325ce4e1a72c3ff0a9800f32
security-tracker.debian.org/tracker/CVE-2017-18509
ubuntu.com/security/notices/USN-4145-1
www.cve.org/CVERecord?id=CVE-2017-18509
www.debian.org/security/2019/dsa-4497
Related
7.2 High
CVSS2
Attack Vector
LOCAL
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
COMPLETE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
AV:L/AC:L/Au:N/C:C/I:C/A:C
7.8 High
CVSS3
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
0.002 Low
EPSS
Percentile
57.7%