What is CVE-2023-4273?

CVE-2023-4273 is a Medium severity Linux kernel vulnerability with a CVSS score of 6.7 out of 10. CVE-2023-4273 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2023-4273?

CVE-2023-4273 has a CVSS score of 6.7 out of 10, rated Medium severity. The vector string is CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H.

Is there a patch available for CVE-2023-4273?

No patch is currently available for CVE-2023-4273. Monitor the NIST NVD and your Linux distribution's security advisories for updates.

Is CVE-2023-4273 actively exploited?

CVE-2023-4273 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

CVE-2023-4273

Medium

A flaw was found in the exFAT driver of the Linux kernel. The vulnerability exists in the implementation of the file name reconstruction function, which is responsible for reading file name entries from a directory index and merging file name parts belonging to one file into a single long file name. Since the file name characters are copied into a stack variable, a local privileged attacker could use this flaw to overflow the kernel stack.

Package Linux Kernel

Published 2023-08-09

Last modified 2024-11-21

CVSS version 3.1

Patch available

Awaiting data

CVSS 3.1 score

6.7

out of 10

Medium

Attack Vector

Local

Attack Complexity

Low

Privileges Required

High

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Vector string

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

Weakness type

CWE-121

CVE-2023-4273 is classified as CWE-121

See CWE-121 on MITRE CWE for full details on this weakness type.

References

The following references provide additional information about CVE-2023-4273 including vendor advisories, patch commits, exploit details, and third-party analysis. Links are sourced from the NIST NVD database.

Red Hat
https://access.redhat.com/errata/RHSA-2023:6583
Red Hat
https://access.redhat.com/security/cve/CVE-2023-4273

Third Party Advisory
Dfir
https://dfir.ru/2023/08/23/cve-2023-4273-a-vulnerability-in-the-linux-exfat-driver/

Exploit Third Party Advisory
Debian Security
https://lists.debian.org/debian-lts-announce/2023/10/msg00027.html
Lists
https://lists.fedoraproject.org/archives/list/[email protected]/message/344H6HO6SSC4KT7PDFXSDIXKMKHISSGF/
Lists
https://lists.fedoraproject.org/archives/list/[email protected]/message/3TYLSJ2SAI7RF56ZLQ5CQWCJLVJSD73Q/
Security
https://security.netapp.com/advisory/ntap-20231027-0002/
Debian Security
https://www.debian.org/security/2023/dsa-5480
Debian Security
https://www.debian.org/security/2023/dsa-5492
Kernel patch commit
https://bugzilla.redhat.com/show_bug.cgi?id=2221609
Patch

Details

CVE ID CVE-2023-4273

Severity Medium

CVSS score 6.7 / 10

CVSS version 3.1

Published 2023-08-09

Modified 2024-11-21

KEV No

Patch Awaiting data

Package linux

Frequently asked questions

What is CVE-2023-4273?

CVE-2023-4273 is a Medium severity Linux kernel vulnerability with a CVSS score of 6.7 out of 10 . CVE-2023-4273 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2023-4273?

CVE-2023-4273 has a CVSS score of 6.7 out of 10, rated Medium severity (CVSS 3.1). The vector string is CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H.
Is there a patch available for CVE-2023-4273?

No patch is currently available for CVE-2023-4273. Monitor the NIST NVD and your Linux distribution's security advisories for updates.
Is CVE-2023-4273 actively exploited?

No — CVE-2023-4273 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.