CVE-2023-42753

2023-09-2500:00:00

ubuntu.com

7.8 High

CVSS3

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

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

4.3 Medium

CVSS2

Access Vector

LOCAL

Access Complexity

LOW

Authentication

SINGLE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

PARTIAL

AV:L/AC:L/Au:S/C:P/I:P/A:P

0.0004 Low

EPSS

Percentile

9.4%

JSON

An array indexing vulnerability was found in the netfilter subsystem of the
Linux kernel. A missing macro could lead to a miscalculation of the
h->nets array offset, providing attackers with the primitive to
arbitrarily increment/decrement a memory buffer out-of-bound. This issue
may allow a local user to crash the system or potentially escalate their
privileges on the system.

Bugs

Notes

Author	Note
	Priority reason: By using unprivileged user namespaces, this can be exploited to achieve denial of service or code execution.

OSVersionArchitecturePackageVersionFilename
ubuntu18.04noarchlinux< 4.15.0-219.230) Available with Ubuntu Pro or Ubuntu Pro (Infra-onlyUNKNOWN
ubuntu20.04noarchlinux< 5.4.0-165.182UNKNOWN
ubuntu22.04noarchlinux< 5.15.0-87.97UNKNOWN
ubuntu23.04noarchlinux< 6.2.0-35.35UNKNOWN
ubuntu24.04noarchlinux< anyUNKNOWN
ubuntu16.04noarchlinux< 4.4.0-246.280) Available with Ubuntu Pro or Ubuntu Pro (Infra-onlyUNKNOWN
ubuntu18.04noarchlinux-aws< 4.15.0-1162.175) Available with Ubuntu Pro or Ubuntu Pro (Infra-onlyUNKNOWN
ubuntu20.04noarchlinux-aws< 5.4.0-1112.121UNKNOWN
ubuntu22.04noarchlinux-aws< 5.15.0-1048.53UNKNOWN
ubuntu23.04noarchlinux-aws< 6.2.0-1014.14UNKNOWN

OS	Version	Architecture	Package	Version	Filename
ubuntu	18.04	noarch	linux	< 4.15.0-219.230) Available with Ubuntu Pro or Ubuntu Pro (Infra-only	UNKNOWN
ubuntu	20.04	noarch	linux	< 5.4.0-165.182	UNKNOWN
ubuntu	22.04	noarch	linux	< 5.15.0-87.97	UNKNOWN
ubuntu	23.04	noarch	linux	< 6.2.0-35.35	UNKNOWN
ubuntu	24.04	noarch	linux	< any	UNKNOWN
ubuntu	16.04	noarch	linux	< 4.4.0-246.280) Available with Ubuntu Pro or Ubuntu Pro (Infra-only	UNKNOWN
ubuntu	18.04	noarch	linux-aws	< 4.15.0-1162.175) Available with Ubuntu Pro or Ubuntu Pro (Infra-only	UNKNOWN
ubuntu	20.04	noarch	linux-aws	< 5.4.0-1112.121	UNKNOWN
ubuntu	22.04	noarch	linux-aws	< 5.15.0-1048.53	UNKNOWN
ubuntu	23.04	noarch	linux-aws	< 6.2.0-1014.14	UNKNOWN