CVE-2021-26690

Severity CVSS v4.0:

Pending analysis

Type:

CWE-476 NULL Pointer Dereference

Publication date:

10/06/2021

Last modified:

07/11/2023

Description

Apache HTTP Server versions 2.4.0 to 2.4.46 A specially crafted Cookie header handled by mod_session can cause a NULL pointer dereference and crash, leading to a possible Denial Of Service

Impact

Vector 3.x

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

Base Score: 7.50 HIGH
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

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

Base Score 3.x

7.50

Severity 3.x

HIGH

Vector 2.0

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

Base Score: 5.00 MEDIUM
Vector: AV:N/AC:L/Au:N/C:N/I:N/A:P

Attack Vector (AV): Network
Attack Complexity (AC): Low
Authentication (Au): None
Confidentiality (C): None
Integrity (I): None
Availability (A): Physical

Base Score 2.0

5.00

Severity 2.0

MEDIUM

Vulnerable products and versions

CPE	From	Up to
cpe:2.3:a:apache:http_server::::::::	2.4.0 (including)	2.4.46 (including)
cpe:2.3:o:debian:debian_linux:9.0:::::::*
cpe:2.3:o:debian:debian_linux:10.0:::::::*
cpe:2.3:o:fedoraproject:fedora:34:::::::*
cpe:2.3:o:fedoraproject:fedora:35:::::::*
cpe:2.3:a:oracle:enterprise_manager_ops_center:12.4.0.0:::::::*
cpe:2.3:a:oracle:instantis_enterprisetrack:17.1:::::::*
cpe:2.3:a:oracle:instantis_enterprisetrack:17.2:::::::*
cpe:2.3:a:oracle:instantis_enterprisetrack:17.3:::::::*
cpe:2.3:a:oracle:zfs_storage_appliance_kit:8.8:::::::*

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

CPE	From	Up to
cpe:2.3:a:apache:http_server::::::::	2.4.0 (including)	2.4.46 (including)
cpe:2.3:o:debian:debian_linux:9.0:::::::*
cpe:2.3:o:debian:debian_linux:10.0:::::::*
cpe:2.3:o:fedoraproject:fedora:34:::::::*
cpe:2.3:o:fedoraproject:fedora:35:::::::*
cpe:2.3:a:oracle:enterprise_manager_ops_center:12.4.0.0:::::::*
cpe:2.3:a:oracle:instantis_enterprisetrack:17.1:::::::*
cpe:2.3:a:oracle:instantis_enterprisetrack:17.2:::::::*
cpe:2.3:a:oracle:instantis_enterprisetrack:17.3:::::::*
cpe:2.3:a:oracle:zfs_storage_appliance_kit:8.8:::::::*

CVE-2021-26690

Description

Impact

Vulnerable products and versions

References to Advisories, Solutions, and Tools