Vulnerability CVE-2018-1065
Published: 2018-03-02

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.

Type:

CWE-476

 (NULL Pointer Dereference)

CVSS2 => (AV:L/AC:M/Au:N/C:N/I:N/A:C)

CVSS Base Score
Impact Subscore
Exploitability Subscore
4.7/10
6.9/10
3.4/10
Exploit range
Attack complexity
Authentication
Local
Medium
No required
Confidentiality impact
Integrity impact
Availability impact
None
None
Complete
Affected software
Linux -> Linux kernel 

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