IM
IronMonkey Threat Research

CVE-2021-33910 MEDIUM

Published: 2021-07-20 | Last Modified: 2025-06-09 | Status: Modified

Description

basic/unit-name.c in systemd prior to 246.15, 247.8, 248.5, and 249.1 has a Memory Allocation with an Excessive Size Value (involving strdupa and alloca for a pathname controlled by a local attacker) that results in an operating system crash.

Additional Descriptions (1)

basic/unit-name.c en systemd anterior a las versiones 246.15, 247.8, 248.5 y 249.1 tiene una asignación de memoria con un valor de tamaño excesivo (que involucra a strdupa y alloca para un nombre de ruta controlado por un atacante local) que resulta en una caída del sistema operativo

CVSS Metrics

Base Score: 5.5 (MEDIUM)

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

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

Source: [email protected]

Type: Primary

Exploitability Score: 1.8

Impact Score: 3.6

Base Score: 4.9 (MEDIUM)

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

Access VectorLOCAL
Access ComplexityLOW
AuthenticationNONE
Confidentiality ImpactNONE
Integrity ImpactNONE
Availability ImpactCOMPLETE

Source: [email protected]

Type: Primary

Exploitability Score: 3.9

Impact Score: 6.9

Weaknesses

Source Type Description
[email protected] Primary
en CWE-770
134c704f-9b21-4f2e-91b3-4a467353bcc0 Secondary
en CWE-770

Affected Products

Vendor Product Version Update Type
systemd_project systemd * <built-in method update of dict object at 0x7fd36a13a2c0> Application
systemd_project systemd * <built-in method update of dict object at 0x7fd369199f80> Application
systemd_project systemd * <built-in method update of dict object at 0x7fd36b92efc0> Application
systemd_project systemd * <built-in method update of dict object at 0x7fd340a10ac0> Application
fedoraproject fedora 33 <built-in method update of dict object at 0x7fd36a13be80> Operating System
fedoraproject fedora 34 <built-in method update of dict object at 0x7fd340a12300> Operating System
debian debian_linux 10.0 <built-in method update of dict object at 0x7fd340a10c00> Operating System
netapp hci_management_node - <built-in method update of dict object at 0x7fd340a11380> Application
netapp solidfire - <built-in method update of dict object at 0x7fd38465b900> Application

Affected Configurations

Operator: OR

Vulnerable CPE
Yes cpe:2.3:a:systemd_project:systemd:*:*:*:*:*:*:*:*
Yes cpe:2.3:a:systemd_project:systemd:*:*:*:*:*:*:*:*
Yes cpe:2.3:a:systemd_project:systemd:*:*:*:*:*:*:*:*
Yes cpe:2.3:a:systemd_project:systemd:*:*:*:*:*:*:*:*

Operator: OR

Vulnerable CPE
Yes cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:*
Yes cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:*

Operator: OR

Vulnerable CPE
Yes cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*

Operator: OR

Vulnerable CPE
Yes cpe:2.3:a:netapp:hci_management_node:-:*:*:*:*:*:*:*
Yes cpe:2.3:a:netapp:solidfire:-:*:*:*:*:*:*:*

References