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CVE-2017-18509

HIGH

7.8

Description

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.

CVE Details

CVSS v3.1 Score7.8

SeverityHIGH

CVSS VectorCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Attack VectorLOCAL

ComplexityLOW

Privileges RequiredLOW

User InteractionNONE

Published8/13/2019

Last Modified11/21/2024

Sourcenvd

Honeypot Sightings0

Affected Products

canonical:ubuntu_linuxdebian:debian_linuxlinux:linux_kernel

Weaknesses (CWE)

CWE-20

References

http://packetstormsecurity.com/files/154059/Slackware-Security-Advisory-Slackware-14.2-kernel-Updates.html(cve@mitre.org)

https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=99253eb750fda6a644d5188fb26c43bad8d5a745(cve@mitre.org)

https://github.com/torvalds/linux/commit/99253eb750fda6a644d5188fb26c43bad8d5a745(cve@mitre.org)

https://lists.debian.org/debian-lts-announce/2019/08/msg00016.html(cve@mitre.org)

https://lists.debian.org/debian-lts-announce/2019/08/msg00017.html(cve@mitre.org)

https://lists.openwall.net/netdev/2017/12/04/40(cve@mitre.org)

https://pulsesecurity.co.nz/advisories/linux-kernel-4.9-inetcsklistenstop-gpf(cve@mitre.org)

https://salsa.debian.org/kernel-team/linux/commit/baefcdc2f29923e7325ce4e1a72c3ff0a9800f32(cve@mitre.org)

https://seclists.org/bugtraq/2019/Aug/26(cve@mitre.org)

https://support.f5.com/csp/article/K41582535(cve@mitre.org)

https://support.f5.com/csp/article/K41582535?utm_source=f5support&amp%3Butm_medium=RSS(cve@mitre.org)

https://usn.ubuntu.com/4145-1/(cve@mitre.org)

https://www.debian.org/security/2019/dsa-4497(cve@mitre.org)

http://packetstormsecurity.com/files/154059/Slackware-Security-Advisory-Slackware-14.2-kernel-Updates.html(af854a3a-2127-422b-91ae-364da2661108)

https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=99253eb750fda6a644d5188fb26c43bad8d5a745(af854a3a-2127-422b-91ae-364da2661108)

https://github.com/torvalds/linux/commit/99253eb750fda6a644d5188fb26c43bad8d5a745(af854a3a-2127-422b-91ae-364da2661108)

https://lists.debian.org/debian-lts-announce/2019/08/msg00016.html(af854a3a-2127-422b-91ae-364da2661108)

https://lists.debian.org/debian-lts-announce/2019/08/msg00017.html(af854a3a-2127-422b-91ae-364da2661108)

https://lists.openwall.net/netdev/2017/12/04/40(af854a3a-2127-422b-91ae-364da2661108)

https://pulsesecurity.co.nz/advisories/linux-kernel-4.9-inetcsklistenstop-gpf(af854a3a-2127-422b-91ae-364da2661108)

https://salsa.debian.org/kernel-team/linux/commit/baefcdc2f29923e7325ce4e1a72c3ff0a9800f32(af854a3a-2127-422b-91ae-364da2661108)

https://seclists.org/bugtraq/2019/Aug/26(af854a3a-2127-422b-91ae-364da2661108)

https://support.f5.com/csp/article/K41582535(af854a3a-2127-422b-91ae-364da2661108)

https://support.f5.com/csp/article/K41582535?utm_source=f5support&amp%3Butm_medium=RSS(af854a3a-2127-422b-91ae-364da2661108)

https://usn.ubuntu.com/4145-1/(af854a3a-2127-422b-91ae-364da2661108)

https://www.debian.org/security/2019/dsa-4497(af854a3a-2127-422b-91ae-364da2661108)

IOC Correlations

No correlations recorded

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