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NOTICE UPDATE

NIST has updated the NVD program announcement page with additional information regarding recent concerns and the temporary delays in enrichment efforts.

CVE-2017-18509 Detail

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.


Severity



CVSS 3.x Severity and Metrics:

NIST CVSS score
NIST: NVD
Base Score:  7.8 HIGH
Vector:  CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H


NVD Analysts use publicly available information to associate vector strings and CVSS scores. We also display any CVSS information provided within the CVE List from the CNA.

Note: NVD Analysts have published a CVSS score for this CVE based on publicly available information at the time of analysis. The CNA has not provided a score within the CVE List.

References to Advisories, Solutions, and Tools

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Hyperlink Resource
http://packetstormsecurity.com/files/154059/Slackware-Security-Advisory-Slackware-14.2-kernel-Updates.html Third Party Advisory  VDB Entry 
https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=99253eb750fda6a644d5188fb26c43bad8d5a745 Patch  Vendor Advisory 
https://github.com/torvalds/linux/commit/99253eb750fda6a644d5188fb26c43bad8d5a745 Patch  Third Party Advisory 
https://lists.debian.org/debian-lts-announce/2019/08/msg00016.html Mailing List  Third Party Advisory 
https://lists.debian.org/debian-lts-announce/2019/08/msg00017.html Mailing List  Third Party Advisory 
https://lists.openwall.net/netdev/2017/12/04/40 Mailing List  Third Party Advisory 
https://pulsesecurity.co.nz/advisories/linux-kernel-4.9-inetcsklistenstop-gpf Exploit  Third Party Advisory 
https://salsa.debian.org/kernel-team/linux/commit/baefcdc2f29923e7325ce4e1a72c3ff0a9800f32 Third Party Advisory 
https://seclists.org/bugtraq/2019/Aug/26 Mailing List  Third Party Advisory 
https://support.f5.com/csp/article/K41582535 Third Party Advisory 
https://support.f5.com/csp/article/K41582535?utm_source=f5support&amp%3Butm_medium=RSS
https://usn.ubuntu.com/4145-1/ Third Party Advisory 
https://www.debian.org/security/2019/dsa-4497 Third Party Advisory 

Weakness Enumeration

CWE-ID CWE Name Source
CWE-20 Improper Input Validation cwe source acceptance level NIST  

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Change History

13 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2017-18509
NVD Published Date:
08/13/2019
NVD Last Modified:
11/06/2023
Source:
MITRE