Vulnerability Details : CVE-2018-1065
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.
Vulnerability category: Memory CorruptionDenial of service
Products affected by CVE-2018-1065
- cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2018-1065
0.04%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 6 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2018-1065
Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
---|---|---|---|---|---|---|
4.7
|
MEDIUM | AV:L/AC:M/Au:N/C:N/I:N/A:C |
3.4
|
6.9
|
NIST | |
4.7
|
MEDIUM | CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H |
1.0
|
3.6
|
NIST |
CWE ids for CVE-2018-1065
-
The product dereferences a pointer that it expects to be valid but is NULL.Assigned by: nvd@nist.gov (Primary)
References for CVE-2018-1065
-
https://usn.ubuntu.com/3654-1/
USN-3654-1: Linux kernel vulnerabilities | Ubuntu security notices
-
http://lists.openwall.net/netdev/2018/01/27/46
netdev - general protection fault in ip6t_do_tableThird Party Advisory
-
https://usn.ubuntu.com/3656-1/
USN-3656-1: Linux kernel (Raspberry Pi 2, Snapdragon) vulnerabilities | Ubuntu security notices
-
https://access.redhat.com/errata/RHSA-2018:2948
RHSA-2018:2948 - Security Advisory - Red Hat Customer Portal
-
https://usn.ubuntu.com/3654-2/
USN-3654-2: Linux kernel (Xenial HWE) vulnerabilities | Ubuntu security notices
-
https://www.debian.org/security/2018/dsa-4188
Debian -- Security Information -- DSA-4188-1 linux
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http://patchwork.ozlabs.org/patch/870355/
[nf] netfilter: add back stackpointer size checks - PatchworkPatch;Third Party Advisory
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https://bugzilla.redhat.com/show_bug.cgi?id=1547824
1547824 – (CVE-2018-1065) CVE-2018-1065 kernel: netfilter: xtables NULL pointer dereference in ip6_tables.c:ip6t_do_table() leading to a crashIssue Tracking;Third Party Advisory
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http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=57ebd808a97d7c5b1e1afb937c2db22beba3c1f8
kernel/git/torvalds/linux.git - Linux kernel source treePatch;Vendor Advisory
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http://www.securitytracker.com/id/1040446
Linux Kernel Netfilter jumpstack Allocation Error Lets Local Users Cause Denial of Service Conditions on the Target System - SecurityTrackerThird Party Advisory;VDB Entry
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https://github.com/torvalds/linux/commit/57ebd808a97d7c5b1e1afb937c2db22beba3c1f8
netfilter: add back stackpointer size checks · torvalds/linux@57ebd80 · GitHubPatch;Third Party Advisory
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