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

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CVE-2022-22176

Severity CVSS v4.0:
Pending analysis
Type:
CWE-20 Input Validation
Publication date:
19/01/2022
Last modified:
26/01/2022

Description

An Improper Validation of Syntactic Correctness of Input vulnerability in the Juniper DHCP daemon (jdhcpd) of Juniper Networks Junos OS allows an adjacent unauthenticated attacker sending a malformed DHCP packet to cause a crash of jdhcpd and thereby a Denial of Service (DoS). If option-82 is configured in a DHCP snooping / -security scenario, jdhcpd crashes if a specific malformed DHCP request packet is received. The DHCP functionality is impacted while jdhcpd restarts, and continued exploitation of the vulnerability will lead to the unavailability of the DHCP service and thereby a sustained DoS. This issue affects Juniper Networks Junos OS 13.2 version 13.2R1 and later versions prior to 15.1R7-S11; 18.3 versions prior to 18.3R3-S6; 18.4 versions prior to 18.4R2-S9, 18.4R3-S10; 19.1 versions prior to 19.1R2-S3, 19.1R3-S7; 19.2 versions prior to 19.2R1-S8, 19.2R3-S4; 19.3 versions prior to 19.3R2-S7, 19.3R3-S4; 19.4 versions prior to 19.4R3-S6; 20.1 versions prior to 20.1R3-S3; 20.2 versions prior to 20.2R3-S3; 20.3 versions prior to 20.3R3-S1; 20.4 versions prior to 20.4R3; 21.1 versions prior to 21.1R2-S1, 21.1R3; 21.2 versions prior to 21.2R1-S1, 21.2R2. This issue does not affect Juniper Networks Junos OS version 12.3R12 and prior versions.

Impact

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

Base Score: 6.50 MEDIUM
Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Attack Vector (AV): Adjacent
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
6.50
Severity 3.x
MEDIUM
Vector 2.0
AV:A/AC:M/Au:N/C:N/I:N/A:P CVSS v2.0 Severity and Metrics:

Base Score: 2.90 LOW
Vector: AV:A/AC:M/Au:N/C:N/I:N/A:P

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

Base Score 2.0
2.90
Severity 2.0
LOW

Vulnerable products and versions

CPE From Up to
cpe:2.3:o:juniper:junos:13.2:r1:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:13.2:r2:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:13.2:r3:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:13.2:r4:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:13.2:r5:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:13.2:r6:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:13.2:r7:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:13.2:r7-s1:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:13.2:r7-s2:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:13.2:r8:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:13.2x51:-:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:13.2x51:d15:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:13.2x51:d20:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:13.2x51:d20.2:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:13.2x51:d21:*:*:*:*:*:*

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


References to Advisories, Solutions, and Tools