Instituto Nacional de ciberseguridad. Sección Incibe
Instituto Nacional de Ciberseguridad. Sección INCIBE-CERT

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CVE-2021-45105

Severity CVSS v4.0:
Pending analysis
Type:
CWE-20 Input Validation
Publication date:
18/12/2021
Last modified:
06/10/2022

Description

Apache Log4j2 versions 2.0-alpha1 through 2.16.0 (excluding 2.12.3 and 2.3.1) did not protect from uncontrolled recursion from self-referential lookups. This allows an attacker with control over Thread Context Map data to cause a denial of service when a crafted string is interpreted. This issue was fixed in Log4j 2.17.0, 2.12.3, and 2.3.1.

Impact

Vector 3.x
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H CVSS v3.1 Severity and Metrics:

Base Score: 5.90 MEDIUM
Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H

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

Base Score 3.x
5.90
Severity 3.x
MEDIUM
Vector 2.0
AV:N/AC:M/Au:N/C:N/I:N/A:P CVSS v2.0 Severity and Metrics:

Base Score: 4.30 MEDIUM
Vector: AV:N/AC:M/Au:N/C:N/I:N/A:P

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

Base Score 2.0
4.30
Severity 2.0
MEDIUM

Vulnerable products and versions

CPE From Up to
cpe:2.3:a:apache:log4j:*:*:*:*:*:*:*:* 2.0 (including) 2.3.1 (excluding)
cpe:2.3:a:apache:log4j:*:*:*:*:*:*:*:* 2.4 (including) 2.12.3 (excluding)
cpe:2.3:a:apache:log4j:*:*:*:*:*:*:*:* 2.13.0 (including) 2.16.0 (including)
cpe:2.3:a:netapp:cloud_manager:-:*:*:*:*:*:*:*
cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*
cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:*
cpe:2.3:a:sonicwall:email_security:*:*:*:*:*:*:*:* 10.0.12 (including)
cpe:2.3:a:sonicwall:network_security_manager:*:*:*:*:on-premises:*:*:* 2.0 (including) 3.0 (excluding)
cpe:2.3:a:sonicwall:network_security_manager:*:*:*:*:saas:*:*:* 2.0 (including) 3.0 (excluding)
cpe:2.3:a:sonicwall:web_application_firewall:*:*:*:*:*:*:*:* 3.0.0 (including) 3.1.0 (excluding)
cpe:2.3:o:sonicwall:6bk1602-0aa12-0tp0_firmware:*:*:*:*:*:*:*:* 2.7.0 (excluding)
cpe:2.3:h:sonicwall:6bk1602-0aa12-0tp0:-:*:*:*:*:*:*:*
cpe:2.3:o:sonicwall:6bk1602-0aa22-0tp0_firmware:*:*:*:*:*:*:*:* 2.7.0 (excluding)
cpe:2.3:h:sonicwall:6bk1602-0aa22-0tp0:-:*:*:*:*:*:*:*
cpe:2.3:o:sonicwall:6bk1602-0aa32-0tp0_firmware:*:*:*:*:*:*:*:* 2.7.0 (excluding)

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


References to Advisories, Solutions, and Tools