PT-2018-10028 · Linux+3 · Linux Kernel+3

Published 2018-03-02 · Updated 2023-02-13 · CVE-2018-1065

Positive Technologies (AI Summary)

CVSS v3.1

4.7

Medium

Base vector

AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H

Name of the Vulnerable Software and Affected Versions Linux kernel versions through 4.15.7

Description The netfilter subsystem in the Linux kernel 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. This issue is related to functions such as 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.

Recommendations For Linux kernel versions through 4.15.7, consider updating to a version that contains a fix for this issue to prevent exploitation. As a temporary workaround, consider restricting the use of the CAP NET RAW or CAP NET ADMIN capability to minimize the risk of denial of service attacks.

Fix

DoS

NULL Pointer Dereference

Weakness Enumeration

CWE-476

Related Identifiers

ALT-PU-2018-1557

ALT-PU-2019-1433

CVE-2018-1065

DSA-4188-1

MGASA-2018-0172

MGASA-2018-0264

MGASA-2018-0265

OPENSUSE-SU-2018_1418-1

RHSA-2018:2948

SUSE-SU-2018:1366-1

SUSE-SU-2018:1816-1

SUSE-SU-2018:1855-1

SUSE-SU-2018:1855-2

USN-3654-1

USN-3654-2

USN-3656-1

Affected Products

Alt Linux

Linux Kernel

Suse

Ubuntu

References · 262

• https://github.com/torvalds/linux/commit/57ebd808a97d7c5b1e1afb937c2db22beba3c1f8 · Patch
• https://osv.dev/vulnerability/SUSE-SU-2018:1816-1 · Vendor Advisory
• https://osv.dev/vulnerability/USN-3654-2 · Vendor Advisory
• https://osv.dev/vulnerability/MGASA-2018-0172 · Vendor Advisory
• https://ubuntu.com/security/CVE-2018-7480 · Vendor Advisory
• https://usn.ubuntu.com/3656-1 · Vendor Advisory
• https://ubuntu.com/security/notices/USN-3656-1 · Vendor Advisory
• https://ubuntu.com/security/notices/USN-3654-2 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2018-1065 · Security Note
• https://ubuntu.com/security/CVE-2018-1130 · Vendor Advisory
• https://ubuntu.com/security/CVE-2017-18222 · Vendor Advisory
• https://osv.dev/vulnerability/DSA-4188-1 · Vendor Advisory
• https://ubuntu.com/security/CVE-2018-7757 · Vendor Advisory
• http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=57ebd808a97d7c5b1e1afb937c2db22beba3c1f8 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2018:1366-1 · Vendor Advisory