IM
IronMonkey Threat Research

CVE-2020-28196 HIGH

Published: 2020-11-06 | Last Modified: 2025-12-03 | Status: Modified

Description

MIT Kerberos 5 (aka krb5) before 1.17.2 and 1.18.x before 1.18.3 allows unbounded recursion via an ASN.1-encoded Kerberos message because the lib/krb5/asn.1/asn1_encode.c support for BER indefinite lengths lacks a recursion limit.

Additional Descriptions (1)

MIT Kerberos versión 5 (también se conoce como krb5) versiones anteriores a 1.17.2 y versiones 1.18.x anteriores a 1.18.3, permite una recursividad ilimitada por medio de un mensaje Kerberos codificado en ASN.1 porque el soporte de la biblioteca lib/krb5 /asn.1/asn1_encode.c para longitudes indefinidas BER carece un límite de recursividad

CVSS Metrics

Base Score: 7.5 (HIGH)

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

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

Source: [email protected]

Type: Primary

Exploitability Score: 3.9

Impact Score: 3.6

Base Score: 5.0 (MEDIUM)

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

Access VectorNETWORK
Access ComplexityLOW
AuthenticationNONE
Confidentiality ImpactNONE
Integrity ImpactNONE
Availability ImpactPARTIAL

Source: [email protected]

Type: Primary

Exploitability Score: 10.0

Impact Score: 2.9

Weaknesses

Source Type Description
[email protected] Primary
en CWE-674
134c704f-9b21-4f2e-91b3-4a467353bcc0 Secondary
en CWE-674

Affected Products

Vendor Product Version Update Type
mit kerberos_5 * <built-in method update of dict object at 0x7fd384e3e280> Application
mit kerberos_5 * <built-in method update of dict object at 0x7fd384e3c680> Application
fedoraproject fedora 31 <built-in method update of dict object at 0x7fd34927cd00> Operating System
netapp active_iq_unified_manager - <built-in method update of dict object at 0x7fd3703450c0> Application
netapp active_iq_unified_manager - <built-in method update of dict object at 0x7fd384e3d7c0> Application
netapp cloud_backup - <built-in method update of dict object at 0x7fd384e3d580> Application
netapp oncommand_insight - <built-in method update of dict object at 0x7fd369304800> Application
netapp oncommand_workflow_automation - <built-in method update of dict object at 0x7fd3426ea0c0> Application
netapp snapcenter - <built-in method update of dict object at 0x7fd3846c2ec0> Application
oracle communications_cloud_native_core_policy 1.14.0 <built-in method update of dict object at 0x7fd384e3e400> Application
oracle communications_offline_mediation_controller 12.0.0.3.0 <built-in method update of dict object at 0x7fd3094e64c0> Application
oracle communications_pricing_design_center 12.0.0.3.0 <built-in method update of dict object at 0x7fd384e3dd00> Application
oracle mysql_server * <built-in method update of dict object at 0x7fd36b8a43c0> 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:31:*:*:*:*:*:*:*

Operator: OR

Vulnerable CPE
Yes cpe:2.3:a:netapp:active_iq_unified_manager:-:*:*:*:*:vmware_vsphere:*:*
Yes cpe:2.3:a:netapp:active_iq_unified_manager:-:*:*:*:*:windows:*:*
Yes cpe:2.3:a:netapp:cloud_backup:-:*:*:*:*:*:*:*
Yes cpe:2.3:a:netapp:oncommand_insight:-:*:*:*:*:*:*:*
Yes cpe:2.3:a:netapp:oncommand_workflow_automation:-:*:*:*:*:*:*:*
Yes cpe:2.3:a:netapp:snapcenter:-:*:*:*:*:*:*:*

Operator: OR

Vulnerable CPE
Yes cpe:2.3:a:oracle:communications_cloud_native_core_policy:1.14.0:*:*:*:*:*:*:*
Yes cpe:2.3:a:oracle:communications_offline_mediation_controller:12.0.0.3.0:*:*:*:*:*:*:*
Yes cpe:2.3:a:oracle:communications_pricing_design_center:12.0.0.3.0:*:*:*:*:*:*:*
Yes cpe:2.3:a:oracle:mysql_server:*:*:*:*:*:*:*:*

References