CVE-2022-41860

freeradius: Crash on unknown option in EAP-SIM

Severity Score

7.5

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

In freeradius, when an EAP-SIM supplicant sends an unknown SIM option, the server will try to look that option up in the internal dictionaries. This lookup will fail, but the SIM code will not check for that failure. Instead, it will dereference a NULL pointer, and cause the server to crash.

En freeradius, cuando un solicitante de EAP-SIM envía una opción SIM desconocida, el servidor intentará buscar esa opción en los diccionarios internos. Esta búsqueda fallará, pero el código SIM no verificará ese error. En su lugar, eliminará la referencia a un puntero NULL y provocará que el servidor falle.

It was discovered that FreeRADIUS incorrectly handled multiple EAP-pwd handshakes. An attacker could possibly use this issue to cause a denial of service. This issue only affected Ubuntu 18.04 LTS. Shane Guan discovered that FreeRADIUS incorrectly handled memory when checking unknown SIM option sent by EAP-SIM supplicant. An attacker could possibly use this issue to cause a denial of service on the server. This issue only affected Ubuntu 16.04 ESM, Ubuntu 18.04 LTS and Ubuntu 20.04 LTS.

*Credits: N/A

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

High

Attack Vector

Network

Attack Complexity

Low

Authentication

None

Confidentiality

None

Integrity

None

Availability

Complete

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2022-09-30 CVE Reserved
2023-01-04 CVE Published
2024-08-03 CVE Updated
2025-03-30 EPSS Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-476: NULL Pointer Dereference

CAPEC

References (4)

URL	Tag	Source

URL	Date	SRC

URL	Date	SRC
https://freeradius.org/security	2023-01-24
https://github.com/FreeRADIUS/freeradius-server/commit/f1cdbb33ec61c4a64a	2023-01-24

URL	Date	SRC
https://access.redhat.com/security/cve/CVE-2022-41860	2023-05-16
https://bugzilla.redhat.com/show_bug.cgi?id=2078485	2023-05-16

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Freeradius Search vendor "Freeradius"		Freeradius Search vendor "Freeradius" for product "Freeradius"				>= 0.9.3 <= 3.0.25 Search vendor "Freeradius" for product "Freeradius" and version " >= 0.9.3 <= 3.0.25"		-		Affected