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

Go to Calendar     Go to Press Room     Go to Newsletters subscription

Search

CVE-2021-0205

Severity CVSS v4.0:
Pending analysis
Type:
Unavailable / Other
Publication date:
15/01/2021
Last modified:
21/01/2021

Description

When the "Intrusion Detection Service" (IDS) feature is configured on Juniper Networks MX series with a dynamic firewall filter using IPv6 source or destination prefix, it may incorrectly match the prefix as /32, causing the filter to block unexpected traffic. This issue affects only IPv6 prefixes when used as source and destination. This issue affects MX Series devices using MS-MPC, MS-MIC or MS-SPC3 service cards with IDS service configured. This issue affects: Juniper Networks Junos OS 17.3 versions prior to 17.3R3-S10 on MX Series; 17.4 versions prior to 17.4R3-S3 on MX Series; 18.1 versions prior to 18.1R3-S11 on MX Series; 18.2 versions prior to 18.2R3-S6 on MX Series; 18.3 versions prior to 18.3R3-S4 on MX Series; 18.4 versions prior to 18.4R3-S6 on MX Series; 19.1 versions prior to 19.1R2-S2, 19.1R3-S3 on MX Series; 19.2 versions prior to 19.2R3-S1 on MX Series; 19.3 versions prior to 19.3R2-S5, 19.3R3-S1 on MX Series; 19.4 versions prior to 19.4R3 on MX Series; 20.1 versions prior to 20.1R2 on MX Series; 20.2 versions prior to 20.2R2 on MX Series;

Impact

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

Base Score: 5.80 MEDIUM
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:L

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

Base Score 3.x
5.80
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:o:juniper:junos:17.3:-:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:17.3:r1-s1:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:17.3:r2:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:17.3:r2-s1:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:17.3:r2-s2:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:17.3:r2-s3:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:17.3:r2-s4:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:17.3:r2-s5:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:17.3:r3:-:*:*:*:*:*
cpe:2.3:o:juniper:junos:17.3:r3-s1:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:17.3:r3-s2:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:17.3:r3-s3:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:17.3:r3-s4:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:17.3:r3-s7:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:17.3:r3-s8:*:*:*:*:*:*

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


References to Advisories, Solutions, and Tools