IM
IronMonkey Threat Research

CVE-2021-22945 CRITICAL

Published: 2021-09-23 | Last Modified: 2025-06-09 | Status: Modified

Description

When sending data to an MQTT server, libcurl <= 7.73.0 and 7.78.0 could in some circumstances erroneously keep a pointer to an already freed memory area and both use that again in a subsequent call to send data and also free it *again*.

Additional Descriptions (1)

Cuando se envían datos a un servidor MQTT, libcurl versiones anteriores a 7.73.0, incluyéndola y 7.78.0, podría en algunas circunstancias, mantener erróneamente un puntero a un área de memoria ya liberada y usarlo de nuevo en una llamada posterior para enviar datos y también liberarlo *de nuevo*

CVSS Metrics

Base Score: 9.1 (CRITICAL)

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

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

Source: [email protected]

Type: Primary

Exploitability Score: 3.9

Impact Score: 5.2

Base Score: 5.8 (MEDIUM)

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

Access VectorNETWORK
Access ComplexityMEDIUM
AuthenticationNONE
Confidentiality ImpactPARTIAL
Integrity ImpactNONE
Availability ImpactPARTIAL

Source: [email protected]

Type: Primary

Exploitability Score: 8.6

Impact Score: 4.9

Weaknesses

Source Type Description
[email protected] Secondary
en CWE-415
[email protected] Primary
en CWE-415
134c704f-9b21-4f2e-91b3-4a467353bcc0 Secondary
en CWE-415

Affected Products

Vendor Product Version Update Type
haxx libcurl * <built-in method update of dict object at 0x7fd30864cec0> Application
fedoraproject fedora 33 <built-in method update of dict object at 0x7fd30864e280> Operating System
fedoraproject fedora 35 <built-in method update of dict object at 0x7fd39c4dcbc0> Operating System
netapp cloud_backup - <built-in method update of dict object at 0x7fd370363840> Application
netapp clustered_data_ontap - <built-in method update of dict object at 0x7fd30864e2c0> Application
oracle mysql_server * <built-in method update of dict object at 0x7fd30864eec0> Application
oracle mysql_server * <built-in method update of dict object at 0x7fd3694e8b80> Application
netapp h300s_firmware - <built-in method update of dict object at 0x7fd39c4dd5c0> Operating System
netapp h500s_firmware - <built-in method update of dict object at 0x7fd2dbe0f9c0> Operating System
netapp h700s_firmware - <built-in method update of dict object at 0x7fd30864fc40> Operating System
netapp h300e_firmware - <built-in method update of dict object at 0x7fd39c4de6c0> Operating System
netapp h500e_firmware - <built-in method update of dict object at 0x7fd39c4dc340> Operating System
netapp h700e_firmware - <built-in method update of dict object at 0x7fd39f96c7c0> Operating System
netapp h410s_firmware - <built-in method update of dict object at 0x7fd3408d2180> Operating System
netapp solidfire_baseboard_management_controller_firmware - <built-in method update of dict object at 0x7fd39c4ddfc0> Operating System
apple macos * <built-in method update of dict object at 0x7fd341789ac0> Operating System
siemens sinec_ins * <built-in method update of dict object at 0x7fd30864f4c0> Application
debian debian_linux 11.0 <built-in method update of dict object at 0x7fd39c4de480> Operating System
splunk universal_forwarder * <built-in method update of dict object at 0x7fd39c4df100> Application
splunk universal_forwarder * <built-in method update of dict object at 0x7fd36b80b280> Application
splunk universal_forwarder 9.1.0 <built-in method update of dict object at 0x7fd3408c8b40> Application

Affected Configurations

Operator: OR

Vulnerable CPE
Yes cpe:2.3:a:haxx:libcurl:*:*:*:*:*:*:*:*

Operator: OR

Vulnerable CPE
Yes cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:*
Yes cpe:2.3:o:fedoraproject:fedora:35:*:*:*:*:*:*:*

Operator: OR

Vulnerable CPE
Yes cpe:2.3:a:netapp:cloud_backup:-:*:*:*:*:*:*:*
Yes cpe:2.3:a:netapp:clustered_data_ontap:-:*:*:*:*:*:*:*

Operator: OR

Vulnerable CPE
Yes cpe:2.3:a:oracle:mysql_server:*:*:*:*:*:*:*:*
Yes cpe:2.3:a:oracle:mysql_server:*:*:*:*:*:*:*:*

Operator: OR

Vulnerable CPE
Yes cpe:2.3:o:netapp:h300s_firmware:-:*:*:*:*:*:*:*

Operator: OR

Vulnerable CPE
No cpe:2.3:h:netapp:h300s:-:*:*:*:*:*:*:*

Operator: OR

Vulnerable CPE
Yes cpe:2.3:o:netapp:h500s_firmware:-:*:*:*:*:*:*:*

Operator: OR

Vulnerable CPE
No cpe:2.3:h:netapp:h500s:-:*:*:*:*:*:*:*

Operator: OR

Vulnerable CPE
Yes cpe:2.3:o:netapp:h700s_firmware:-:*:*:*:*:*:*:*

Operator: OR

Vulnerable CPE
No cpe:2.3:h:netapp:h700s:-:*:*:*:*:*:*:*

Operator: OR

Vulnerable CPE
Yes cpe:2.3:o:netapp:h300e_firmware:-:*:*:*:*:*:*:*

Operator: OR

Vulnerable CPE
No cpe:2.3:h:netapp:h300e:-:*:*:*:*:*:*:*

Operator: OR

Vulnerable CPE
Yes cpe:2.3:o:netapp:h500e_firmware:-:*:*:*:*:*:*:*

Operator: OR

Vulnerable CPE
No cpe:2.3:h:netapp:h500e:-:*:*:*:*:*:*:*

Operator: OR

Vulnerable CPE
Yes cpe:2.3:o:netapp:h700e_firmware:-:*:*:*:*:*:*:*

Operator: OR

Vulnerable CPE
No cpe:2.3:h:netapp:h700e:-:*:*:*:*:*:*:*

Operator: OR

Vulnerable CPE
Yes cpe:2.3:o:netapp:h410s_firmware:-:*:*:*:*:*:*:*

Operator: OR

Vulnerable CPE
No cpe:2.3:h:netapp:h410s:-:*:*:*:*:*:*:*

Operator: OR

Vulnerable CPE
Yes cpe:2.3:o:netapp:solidfire_baseboard_management_controller_firmware:-:*:*:*:*:*:*:*

Operator: OR

Vulnerable CPE
No cpe:2.3:h:netapp:solidfire_baseboard_management_controller:-:*:*:*:*:*:*:*

Operator: OR

Vulnerable CPE
Yes cpe:2.3:o:apple:macos:*:*:*:*:*:*:*:*

Operator: OR

Vulnerable CPE
Yes cpe:2.3:a:siemens:sinec_ins:*:*:*:*:*:*:*:*

Operator: OR

Vulnerable CPE
Yes cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:*

Operator: OR

Vulnerable CPE
Yes cpe:2.3:a:splunk:universal_forwarder:*:*:*:*:*:*:*:*
Yes cpe:2.3:a:splunk:universal_forwarder:*:*:*:*:*:*:*:*
Yes cpe:2.3:a:splunk:universal_forwarder:9.1.0:*:*:*:*:*:*:*

References