CVE-2021-26691

Severity CVSS v4.0:

Pending analysis

Type:

CWE-787 Out-of-bounds Write

Publication date:

10/06/2021

Last modified:

07/11/2023

Description

In Apache HTTP Server versions 2.4.0 to 2.4.46 a specially crafted SessionHeader sent by an origin server could cause a heap overflow

Impact

Vector 3.x

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

Base Score: 9.80 CRITICAL
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

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

Base Score 3.x

9.80

Severity 3.x

CRITICAL

Vector 2.0

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

Base Score: 7.50 HIGH
Vector: AV:N/AC:L/Au:N/C:P/I:P/A:P

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

Base Score 2.0

7.50

Severity 2.0

HIGH

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:secure_backup::::::::		18.1.0.1.0 (excluding)
cpe:2.3:a:oracle:zfs_storage_appliance_kit:8.8:::::::*
cpe:2.3:a:netapp:cloud_backup:-:::::::*

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:secure_backup::::::::		18.1.0.1.0 (excluding)
cpe:2.3:a:oracle:zfs_storage_appliance_kit:8.8:::::::*
cpe:2.3:a:netapp:cloud_backup:-:::::::*

CVE-2021-26691

Description

Impact

Vulnerable products and versions

References to Advisories, Solutions, and Tools