CVE-2023-32233

kernel: netfilter: use-after-free in nf_tables when processing batch requests can lead to privilege escalation

Severity Score

7.8

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

NVD
RedHat

In the Linux kernel through 6.3.1, a use-after-free in Netfilter nf_tables when processing batch requests can be abused to perform arbitrary read and write operations on kernel memory. Unprivileged local users can obtain root privileges. This occurs because anonymous sets are mishandled.

A use-after-free vulnerability was found in the Netfilter subsystem of the Linux kernel when processing batch requests to update nf_tables configuration. This vulnerability can be abused to perform arbitrary reads and writes in kernel memory. A local user (with CAP_NET_ADMIN capability) could use this flaw to crash the system or potentially escalate their privileges on the system.

*Credits: N/A

CVSS Scores

NISTv3.1 7.8

Attack Vector

Local

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2023-05-05 CVE Reserved
2023-05-08 CVE Published
2023-05-16 EPSS Updated
2023-05-16 First Exploit
2024-08-02 CVE Updated
---------- Exploited in Wild
---------- KEV Due Date

CWE

CWE-416: Use After Free

CAPEC

References (17)

URL	Tag	Source
http://www.openwall.com/lists/oss-security/2023/05/15/5	Mailing List
https://lists.debian.org/debian-lts-announce/2023/06/msg00008.html	Mailing List
https://lists.debian.org/debian-lts-announce/2023/07/msg00030.html	Mailing List
https://news.ycombinator.com/item?id=35879660	Issue Tracking
https://security.netapp.com/advisory/ntap-20230616-0002	Mailing List

URL	Date	SRC
https://github.com/oferchen/POC-CVE-2023-32233	2023-06-20
https://github.com/PIDAN-HEIDASHUAI/CVE-2023-32233	2023-05-16
https://github.com/Liuk3r/CVE-2023-32233	2023-05-16
https://github.com/RogelioPumajulca/TEST-CVE-2023-32233	2024-02-04
https://github.com/void0red/CVE-2023-32233	2024-04-01

URL	Date	SRC
http://packetstormsecurity.com/files/173087/Kernel-Live-Patch-Security-Notice-LSN-0095-1.html	2023-09-28
https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=c1592a89942e9678f7d9c8030efa777c0d57edab	2023-09-28
https://github.com/torvalds/linux/commit/c1592a89942e9678f7d9c8030efa777c0d57edab	2023-09-28
https://www.openwall.com/lists/oss-security/2023/05/08/4	2023-09-28

URL	Date	SRC
https://bugzilla.redhat.com/show_bug.cgi?id=2196105	2023-09-28
https://www.debian.org/security/2023/dsa-5402	2023-09-28
https://access.redhat.com/security/cve/CVE-2023-32233	2023-10-10

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				>= 3.13 < 4.14.315 Search vendor "Linux" for product "Linux Kernel" and version " >= 3.13 < 4.14.315"		-		Affected
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				>= 4.15 < 4.19.283 Search vendor "Linux" for product "Linux Kernel" and version " >= 4.15 < 4.19.283"		-		Affected
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				>= 4.20 < 5.4.243 Search vendor "Linux" for product "Linux Kernel" and version " >= 4.20 < 5.4.243"		-		Affected
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				>= 5.5 < 5.10.180 Search vendor "Linux" for product "Linux Kernel" and version " >= 5.5 < 5.10.180"		-		Affected
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				>= 5.11 < 5.15.111 Search vendor "Linux" for product "Linux Kernel" and version " >= 5.11 < 5.15.111"		-		Affected
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				>= 5.16 < 6.1.28 Search vendor "Linux" for product "Linux Kernel" and version " >= 5.16 < 6.1.28"		-		Affected
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				>= 6.2 < 6.2.15 Search vendor "Linux" for product "Linux Kernel" and version " >= 6.2 < 6.2.15"		-		Affected
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				>= 6.3 < 6.3.2 Search vendor "Linux" for product "Linux Kernel" and version " >= 6.3 < 6.3.2"		-		Affected
Redhat Search vendor "Redhat"		Enterprise Linux Search vendor "Redhat" for product "Enterprise Linux"				7.0 Search vendor "Redhat" for product "Enterprise Linux" and version "7.0"		-		Affected
Redhat Search vendor "Redhat"		Enterprise Linux Search vendor "Redhat" for product "Enterprise Linux"				8.0 Search vendor "Redhat" for product "Enterprise Linux" and version "8.0"		-		Affected
Redhat Search vendor "Redhat"		Enterprise Linux Search vendor "Redhat" for product "Enterprise Linux"				9.0 Search vendor "Redhat" for product "Enterprise Linux" and version "9.0"		-		Affected
Netapp Search vendor "Netapp"		Hci Baseboard Management Controller Search vendor "Netapp" for product "Hci Baseboard Management Controller"				h300s Search vendor "Netapp" for product "Hci Baseboard Management Controller" and version "h300s"		-		Affected
Netapp Search vendor "Netapp"		Hci Baseboard Management Controller Search vendor "Netapp" for product "Hci Baseboard Management Controller"				h410c Search vendor "Netapp" for product "Hci Baseboard Management Controller" and version "h410c"		-		Affected
Netapp Search vendor "Netapp"		Hci Baseboard Management Controller Search vendor "Netapp" for product "Hci Baseboard Management Controller"				h410s Search vendor "Netapp" for product "Hci Baseboard Management Controller" and version "h410s"		-		Affected
Netapp Search vendor "Netapp"		Hci Baseboard Management Controller Search vendor "Netapp" for product "Hci Baseboard Management Controller"				h500s Search vendor "Netapp" for product "Hci Baseboard Management Controller" and version "h500s"		-		Affected
Netapp Search vendor "Netapp"		Hci Baseboard Management Controller Search vendor "Netapp" for product "Hci Baseboard Management Controller"				h700s Search vendor "Netapp" for product "Hci Baseboard Management Controller" and version "h700s"		-		Affected