CVE-2017-18509 Detail

Current 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.


View Analysis Description

Severity



CVSS 3.x Severity and Metrics:

NIST CVSS score
NIST: NVD
Base Score:  7.8 HIGH
Vector:  CVSS:3.0/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

By selecting these links, you will be leaving NIST webspace. We have provided these links to other web sites because they may have information that would be of interest to you. No inferences should be drawn on account of other sites being referenced, or not, from this page. There may be other web sites that are more appropriate for your purpose. NIST does not necessarily endorse the views expressed, or concur with the facts presented on these sites. Further, NIST does not endorse any commercial products that may be mentioned on these sites. Please address comments about this page to nvd@nist.gov.

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 Patch  Third Party Advisory 
https://seclists.org/bugtraq/2019/Aug/26 Mailing List  Third Party Advisory 
https://support.f5.com/csp/article/K41582535
https://support.f5.com/csp/article/K41582535?utm_source=f5support&utm_medium=RSS
https://usn.ubuntu.com/4145-1/
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  

Known Affected Software Configurations Switch to CPE 2.2

CPEs loading, please wait.

Denotes Vulnerable Software
Are we missing a CPE here? Please let us know.

Change History

10 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2017-18509
NVD Published Date:
08/13/2019
NVD Last Modified:
09/26/2019
Source:
MITRE