IM
IronMonkey Threat Research

CVE-2021-37750 MEDIUM

Published: 2021-08-23 | Last Modified: 2024-11-21 | Status: Modified

Description

The Key Distribution Center (KDC) in MIT Kerberos 5 (aka krb5) before 1.18.5 and 1.19.x before 1.19.3 has a NULL pointer dereference in kdc/do_tgs_req.c via a FAST inner body that lacks a server field.

Additional Descriptions (1)

El Centro de Distribución de Claves (KDC) en MIT Kerberos 5 (también se conoce como krb5) versiones anteriores a 1.18.5 y 1.19.x versiones anteriores a 1.19.3, presenta una desreferencia de puntero NULL en el archivo kdc/do_tgs_req.c por medio de un cuerpo interno FAST que carece de un campo de servidor.

CVSS Metrics

Base Score: 6.5 (MEDIUM)

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

Attack VectorNETWORK
Attack ComplexityLOW
Privileges RequiredLOW
User InteractionNONE
ScopeUNCHANGED
Confidentiality ImpactNONE
Integrity ImpactNONE
Availability ImpactHIGH

Source: [email protected]

Type: Primary

Exploitability Score: 2.8

Impact Score: 3.6

Base Score: 4.0 (MEDIUM)

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

Access VectorNETWORK
Access ComplexityLOW
AuthenticationSINGLE
Confidentiality ImpactNONE
Integrity ImpactNONE
Availability ImpactPARTIAL

Source: [email protected]

Type: Primary

Exploitability Score: 8.0

Impact Score: 2.9

Weaknesses

Source Type Description
[email protected] Primary
en CWE-476

Affected Products

Vendor Product Version Update Type
mit kerberos_5 * <built-in method update of dict object at 0x7fd34011e800> Application
mit kerberos_5 * <built-in method update of dict object at 0x7fd340f25800> Application
fedoraproject fedora 33 <built-in method update of dict object at 0x7fd34011f2c0> Operating System
debian debian_linux 9.0 <built-in method update of dict object at 0x7fd3408f3e00> Operating System
starwindsoftware starwind_virtual_san v8r13 <built-in method update of dict object at 0x7fd34011fac0> Application
oracle communications_cloud_native_core_network_slice_selection_function 22.1.0 <built-in method update of dict object at 0x7fd34011ff00> Application

Affected Configurations

Operator: OR

Vulnerable CPE
Yes cpe:2.3:a:mit:kerberos_5:*:*:*:*:*:*:*:*
Yes cpe:2.3:a:mit:kerberos_5:*:*:*:*:*:*:*:*

Operator: OR

Vulnerable CPE
Yes cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:*

Operator: OR

Vulnerable CPE
Yes cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*

Operator: OR

Vulnerable CPE
Yes cpe:2.3:a:starwindsoftware:starwind_virtual_san:v8r13:14338:*:*:*:*:*:*

Operator: OR

Vulnerable CPE
Yes cpe:2.3:a:oracle:communications_cloud_native_core_network_slice_selection_function:22.1.0:*:*:*:*:*:*:*

References