CVE-2018-1065

Description

The netfilter subsystem in the Linux kernel through 4.15.7 mishandles the case of a rule blob that contains a jump but lacks a user-defined chain, which allows local users to cause a denial of service (NULL pointer dereference) by leveraging the CAP_NET_RAW or CAP_NET_ADMIN capability, related to arpt_do_table in net/ipv4/netfilter/arp_tables.c, ipt_do_table in net/ipv4/netfilter/ip_tables.c, and ip6t_do_table in net/ipv6/netfilter/ip6_tables.c.

Category

4.7
CVSS
Severity: Medium
CVSS 3.0 •
CVSS 2.0 •
EPSS 0.02%
Vendor Advisory ubuntu.com Vendor Advisory debian.org Vendor Advisory redhat.com Vendor Advisory ubuntu.com Vendor Advisory ubuntu.com Vendor Advisory kernel.org
Affected: n/a Linux kernel 4.15.0-rc9
Published at:
Updated at:

References

Link Tags
http://www.securitytracker.com/id/1040446 vdb entry third party advisory
https://usn.ubuntu.com/3654-1/ vendor advisory
https://www.debian.org/security/2018/dsa-4188 vendor advisory
https://access.redhat.com/errata/RHSA-2018:2948 vendor advisory
https://bugzilla.redhat.com/show_bug.cgi?id=1547824 issue tracking third party advisory
https://usn.ubuntu.com/3654-2/ vendor advisory
http://lists.openwall.net/netdev/2018/01/27/46 third party advisory
https://usn.ubuntu.com/3656-1/ vendor advisory
http://patchwork.ozlabs.org/patch/870355/ third party advisory patch
https://github.com/torvalds/linux/commit/57ebd808a97d7c5b1e1afb937c2db22beba3c1f8 third party advisory patch
http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=57ebd808a97d7c5b1e1afb937c2db22beba3c1f8 patch vendor advisory

Frequently Asked Questions

What is the severity of CVE-2018-1065?
CVE-2018-1065 has been scored as a medium severity vulnerability.
How to fix CVE-2018-1065?
To fix CVE-2018-1065, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2018-1065 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2018-1065 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2018-1065?
CVE-2018-1065 affects n/a Linux kernel 4.15.0-rc9.
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