CVE-2023-7192

2024-01-0200:00:00

ubuntu.com

linux kernel

netfilter

local attacker

cap_net_admin

denial of service

bugzilla

redhat

suse

user namespaces

local privilege escalation

CVSS3

5.5

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

AI Score

5.3

Confidence

High

EPSS

Percentile

10.1%

JSON

A memory leak problem was found in ctnetlink_create_conntrack in
net/netfilter/nf_conntrack_netlink.c in the Linux Kernel. This issue may
allow a local attacker with CAP_NET_ADMIN privileges to cause a denial of
service (DoS) attack due to a refcount overflow.

Bugs

Notes

Author	Note
	Priority reason: By using unprivileged user namespaces, this can be exploited to achieve local privilege escalation.

OSVersionArchitecturePackageVersionFilename
ubuntu18.04noarchlinux< 4.15.0-222.233UNKNOWN
ubuntu20.04noarchlinux< 5.4.0-152.169UNKNOWN
ubuntu22.04noarchlinux< 5.15.0-79.86UNKNOWN
ubuntu14.04noarchlinux< 3.13.0-196.247UNKNOWN
ubuntu16.04noarchlinux< 4.4.0-251.285UNKNOWN
ubuntu18.04noarchlinux-aws< 4.15.0-1165.178UNKNOWN
ubuntu20.04noarchlinux-aws< 5.4.0-1104.112UNKNOWN
ubuntu22.04noarchlinux-aws< 5.15.0-1042.47UNKNOWN
ubuntu14.04noarchlinux-aws< 4.4.0-1128.134UNKNOWN
ubuntu16.04noarchlinux-aws< 4.4.0-1166.181UNKNOWN

OS	Version	Architecture	Package	Version	Filename
ubuntu	18.04	noarch	linux	< 4.15.0-222.233	UNKNOWN
ubuntu	20.04	noarch	linux	< 5.4.0-152.169	UNKNOWN
ubuntu	22.04	noarch	linux	< 5.15.0-79.86	UNKNOWN
ubuntu	14.04	noarch	linux	< 3.13.0-196.247	UNKNOWN
ubuntu	16.04	noarch	linux	< 4.4.0-251.285	UNKNOWN
ubuntu	18.04	noarch	linux-aws	< 4.15.0-1165.178	UNKNOWN
ubuntu	20.04	noarch	linux-aws	< 5.4.0-1104.112	UNKNOWN
ubuntu	22.04	noarch	linux-aws	< 5.15.0-1042.47	UNKNOWN
ubuntu	14.04	noarch	linux-aws	< 4.4.0-1128.134	UNKNOWN
ubuntu	16.04	noarch	linux-aws	< 4.4.0-1166.181	UNKNOWN