CVE-2021-45960

Severity CVSS v4.0:

Pending analysis

Type:

Unavailable / Other

Publication date:

01/01/2022

Last modified:

05/05/2025

Description

In Expat (aka libexpat) before 2.4.3, a left shift by 29 (or more) places in the storeAtts function in xmlparse.c can lead to realloc misbehavior (e.g., allocating too few bytes, or only freeing memory).

Impact

Vector 3.x

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H CVSS v3.1 Severity and Metrics:

Base Score: 8.80 HIGH
Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): Low
User Interaction (UI): None
Scope (S): Unchanged
Confidentiality (C): High
Integrity (I): High
Availability (A): High

Base Score 3.x

8.80

Severity 3.x

HIGH

Vector 2.0

AV:N/AC:L/Au:S/C:C/I:C/A:C CVSS v2.0 Severity and Metrics:

Base Score: 9.00 HIGH
Vector: AV:N/AC:L/Au:S/C:C/I:C/A:C

Attack Vector (AV): Network
Attack Complexity (AC): Low
Authentication (Au): Single
Confidentiality (C): Complete
Integrity (I): Complete
Availability (A): Complete

Base Score 2.0

9.00

Severity 2.0

HIGH

Vulnerable products and versions

CPE	From	Up to
cpe:2.3:a:libexpat_project:libexpat::::::::		2.4.3 (excluding)
cpe:2.3:a:tenable:nessus::::::::		8.15.3 (excluding)
cpe:2.3:a:tenable:nessus::::::::	10.0.0 (including)	10.1.1 (excluding)
cpe:2.3:o:debian:debian_linux:10.0:::::::*
cpe:2.3:o:debian:debian_linux:11.0:::::::*
cpe:2.3:a:siemens:sinema_remote_connect_server::::::::		3.1 (excluding)
cpe:2.3:a:netapp:active_iq_unified_manager:-:::::vmware_vsphere::
cpe:2.3:a:netapp:hci_baseboard_management_controller:h610c:::::::*
cpe:2.3:a:netapp:hci_baseboard_management_controller:h610s:::::::*
cpe:2.3:a:netapp:hci_baseboard_management_controller:h615c:::::::*
cpe:2.3:a:netapp:oncommand_workflow_automation:-:::::::*
cpe:2.3:a:netapp:solidfire_\&_hci_management_node:-:::::::*

To consult the complete list of CPE names with products and versions, see this page

CPE	From	Up to
cpe:2.3:a:libexpat_project:libexpat::::::::		2.4.3 (excluding)
cpe:2.3:a:tenable:nessus::::::::		8.15.3 (excluding)
cpe:2.3:a:tenable:nessus::::::::	10.0.0 (including)	10.1.1 (excluding)
cpe:2.3:o:debian:debian_linux:10.0:::::::*
cpe:2.3:o:debian:debian_linux:11.0:::::::*
cpe:2.3:a:siemens:sinema_remote_connect_server::::::::		3.1 (excluding)
cpe:2.3:a:netapp:active_iq_unified_manager:-:::::vmware_vsphere::
cpe:2.3:a:netapp:hci_baseboard_management_controller:h610c:::::::*
cpe:2.3:a:netapp:hci_baseboard_management_controller:h610s:::::::*
cpe:2.3:a:netapp:hci_baseboard_management_controller:h615c:::::::*
cpe:2.3:a:netapp:oncommand_workflow_automation:-:::::::*
cpe:2.3:a:netapp:solidfire_\&_hci_management_node:-:::::::*

CVE-2021-45960

Description

Impact

Vulnerable products and versions

References to Advisories, Solutions, and Tools