CVE-2023-0179: Buffer Overflow

Published Jan 13, 2023
·
Updated

A buffer overflow vulnerability was found in the Netfilter subsystem in the Linux Kernel. This issue could allow the leakage of both stack and heap addresses, and potentially allow Local Privilege Escalation to the root user via arbitrary code execution.

Other sources

An integer overflow vulnerability was found within the Netfilter (nftables) subsystem. The exploitation could allow the leakage of both stack and heap addresses and, potentially, a Local Privilege Escalation to the root user via arbitrary code execution.

Reference: https://seclists.org/oss-sec/2023/q1/20

Red Hat

Affected Software

42 affected componentsFixes available
redhat/kernel<0:5.14.0-162.18.1.el9_1
0:5.14.0-162.18.1.el9_1
redhat/kernel-rt<0:5.14.0-162.18.1.rt21.181.el9_1
0:5.14.0-162.18.1.rt21.181.el9_1
redhat/kernel<0:5.14.0-70.49.1.el9_0
0:5.14.0-70.49.1.el9_0
redhat/kernel-rt<0:5.14.0-70.49.1.rt21.120.el9_0
0:5.14.0-70.49.1.rt21.120.el9_0
redhat/kernel<5.10.164
5.10.164
redhat/kernel<5.15.89
5.15.89
redhat/kernel<6.1.7
6.1.7
Linux Linux kernel>=5.5.0<5.10.164
Linux Linux kernel>=5.11<5.15.89
Linux Linux kernel>=5.16<6.1.7
Canonical Ubuntu Linux=16.04
Canonical Ubuntu Linux=18.04
Canonical Ubuntu Linux=20.04
Canonical Ubuntu Linux=22.04
Fedoraproject Fedora=36
Fedoraproject Fedora=37
redhat Enterprise Linux=9.0
redhat Enterprise Linux Eus=9.0
redhat Enterprise Linux For Ibm Z Systems=9.0
redhat Enterprise Linux For Power Little Endian=9.0
redhat Enterprise Linux For Power Little Endian Eus=9.0
redhat Enterprise Linux For Real Time=9.0
redhat Enterprise Linux For Real Time For Nfv=9.0
redhat Enterprise Linux Server=9.0
redhat Enterprise Linux Server For Power Little Endian Update Services For Sap Solutions=9.0
redhat Codeready Linux Builder
redhat Enterprise Linux=9.0
redhat Enterprise Linux Eus=9.0
redhat Enterprise Linux For Ibm Z Systems=9.0
redhat Enterprise Linux For Ibm Z Systems Eus=9.0
redhat Enterprise Linux For Power Little Endian=9.0
redhat Enterprise Linux For Power Little Endian Eus=9.0
redhat Enterprise Linux Server=9.0
All of the following
redhat Codeready Linux Builder
Any of the following
redhat Enterprise Linux=9.0
redhat Enterprise Linux Eus=9.0
redhat Enterprise Linux For Ibm Z Systems=9.0
redhat Enterprise Linux For Ibm Z Systems Eus=9.0
redhat Enterprise Linux For Power Little Endian=9.0
redhat Enterprise Linux For Power Little Endian Eus=9.0
redhat Enterprise Linux Server=9.0
debian/linux
5.10.223-15.10.234-16.1.129-16.1.135-16.12.25-1

Remediation

Information

This flaw can be mitigated by disabling unprivileged user namespaces will prevent exploitation: ~~~ sysctl -w kernel.unprivileged_userns_clone = 0 ~~~

Mitigation

If not needed, disable the ability for unprivileged users to create namespaces. To do this temporarily, do: sudo sysctl -w kernel.unprivileged_userns_clone=0 To disable across reboots, do: echo kernel.unprivileged_userns_clone=0 | \ sudo tee /etc/sysctl.d/99-disable-unpriv-userns.conf

Event History

Jan 13, 2023
CVE Published
06:30 AM
Jan 17, 2023
Data Sourced
via Red Hat·05:10 PM
DescriptionSeverityAffected Software
Mar 27, 2023
CVE Published
via MITRE·12:00 AM
Data Sourced
via MITRE·12:00 AM
DescriptionWeakness
Jan 12, 2024
Data Sourced
via Launchpad·12:13 AM
Description
Dec 1, 2024
Data Sourced
via Ubuntu·03:59 AM
RemedyDescriptionSeverityAffected Software

Parent advisories

This vulnerability appears in the following advisories.

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Frequently Asked Questions

1

What is the severity of CVE-2023-0179?

CVE-2023-0179 is considered a high severity vulnerability due to its potential for local privilege escalation.

2

How do I fix CVE-2023-0179?

To fix CVE-2023-0179, update the kernel to the recommended versions specified in the vulnerability details.

3

What platforms are affected by CVE-2023-0179?

CVE-2023-0179 affects various versions of the Linux kernel across distributions such as Red Hat, Ubuntu, and Fedora.

4

What kind of exploitation is possible with CVE-2023-0179?

CVE-2023-0179 could lead to arbitrary code execution, allowing a local user to execute code as the root user.

5

Is there a workaround for CVE-2023-0179?

There are no specific workarounds for CVE-2023-0179; patching the kernel is the recommended approach to mitigate the vulnerability.

Contact

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