CVE-2017-18509: Input Validation
First published: Tue Aug 13 2019(Updated: )
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.
Credit: cve@mitre.org cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Linux Linux kernel | <3.16.72 | |
| Linux Linux kernel | >=3.17<4.4.187 | |
| Linux Linux kernel | >=4.5<4.9.187 | |
| Linux Linux kernel | >=4.10<4.11 | |
| Canonical Ubuntu Linux | =16.04 | |
| Debian Debian Linux | =8.0 | |
| Debian Debian Linux | =9.0 | |
| Debian Debian Linux | =10.0 | |
| Google Android | ||
| debian/linux | 5.10.223-1 5.10.226-1 6.1.115-1 6.1.119-1 6.11.10-1 6.12.5-1 |
Never miss a vulnerability like this again
Sign up to SecAlerts for real-time vulnerability data matched to your software, aggregated from hundreds of sources.
Reference Links
- http://packetstormsecurity.com/files/154059/Slackware-Security-Advisory-Slackware-14.2-kernel-Updates.html
- https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=99253eb750fda6a644d5188fb26c43bad8d5a745
- https://github.com/torvalds/linux/commit/99253eb750fda6a644d5188fb26c43bad8d5a745
- https://lists.debian.org/debian-lts-announce/2019/08/msg00016.html
- https://lists.debian.org/debian-lts-announce/2019/08/msg00017.html
- https://lists.openwall.net/netdev/2017/12/04/40
- https://pulsesecurity.co.nz/advisories/linux-kernel-4.9-inetcsklistenstop-gpf
- https://salsa.debian.org/kernel-team/linux/commit/baefcdc2f29923e7325ce4e1a72c3ff0a9800f32
- https://seclists.org/bugtraq/2019/Aug/26
- 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
- https://support.f5.com/csp/article/K41582535?utm_source=f5support&amp;utm_medium=RSS
- https://launchpad.net/bugs/cve/CVE-2017-18509
- https://support.f5.com/csp/article/K41582535?utm_source=f5support&%3Butm_medium=RSS
- https://android.googlesource.com/kernel/common/+/99253eb750fda6a644d5188fb26c43bad8d5a745
- https://source.android.com/docs/security/bulletin/2021-02-01 (Advisory)
- https://git.kernel.org/linus/99253eb750fda6a644d5188fb26c43bad8d5a745
- https://security-tracker.debian.org/tracker/CVE-2017-18509
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-18509
- https://nvd.nist.gov/vuln/detail/CVE-2017-18509
- https://ubuntu.com/security/CVE-2017-18509
Frequently Asked Questions
What is the vulnerability ID for this issue?
The vulnerability ID for this issue is CVE-2017-18509.
What is the severity level of CVE-2017-18509?
CVE-2017-18509 has a severity level of high.
Which software is affected by CVE-2017-18509?
CVE-2017-18509 affects various versions of the Linux kernel, including linux-gcp, linux-gcp-edge, linux-gke-4.15, linux, linux-aws, linux-aws-hwe, linux-azure, linux-azure-edge, linux-gke-5.0, linux-hwe, linux-hwe-edge, linux-kvm, linux-lts-trusty, linux-lts-xenial, linux-oem, linux-oracle, linux-raspi2, linux-snapdragon, and Google Android.
How can an attacker exploit CVE-2017-18509?
An attacker can exploit CVE-2017-18509 by setting a specific socket option, which allows them to control a pointer in the kernel and potentially execute arbitrary code.
Are there any patches or remedies available for CVE-2017-18509?
Yes, there are patches available to fix CVE-2017-18509. Please refer to the relevant sources for more information and updates.
- collector/nvd-index
- agent/type
- collector/launchpad-cve
- source/Launchpad
- agent/author
- collector/nvd-cve
- source/NVD
- agent/software-canonical-lookup
- agent/weakness
- agent/severity
- collector/mitre-cve
- source/MITRE
- collector/android-source
- source/Android
- agent/last-modified-date
- agent/references
- agent/remedy
- agent/first-publish-date
- agent/tags
- collector/usn-cve
- source/Ubuntu
- agent/description
- agent/event
- collector/security-tracker-debian
- source/Debian
- agent/softwarecombine
- agent/trending
- vendor/linux
- canonical/linux linux kernel
- version/linux linux kernel/3.17
- version/linux linux kernel/4.5
- version/linux linux kernel/4.10
- vendor/canonical
- canonical/canonical ubuntu linux
- version/canonical ubuntu linux/16.04
- vendor/debian
- canonical/debian debian linux
- version/debian debian linux/8.0
- version/debian debian linux/9.0
- version/debian debian linux/10.0
- vendor/google
- canonical/google android
- package-manager/debian