PT-2021-5011 · Juniper Networks · Junos+1
Published
2021-10-13
·
Updated
2021-10-25
·
CVE-2021-31353
CVSS v2.0
7.8
High
| Vector | AV:N/AC:L/Au:N/C:N/I:N/A:C |
Name of the Vulnerable Software and Affected Versions
Juniper Networks Junos OS versions 19.3R3-S2; 19.4R3-S3; 20.2R2-S3 through 20.2R3-S2; 20.3R2 through 20.3R3; 20.4R2 through 20.4R3; 21.1 versions prior to 21.1R2
Juniper Networks Junos OS Evolved versions prior to 20.4R2-S3-EVO; 20.4R3-EVO; 21.1-EVO versions prior to 21.1R2-EVO; 21.2-EVO versions prior to 21.2R2-EVO
Description
The issue is related to an Improper Handling of Exceptional Conditions vulnerability in Juniper Networks Junos OS and Junos OS Evolved. This vulnerability allows an attacker to inject a specific BGP update, causing the routing protocol daemon (RPD) to crash and restart, leading to a Denial of Service (DoS). Continued receipt and processing of the BGP update will create a sustained Denial of Service (DoS) condition.
Recommendations
For Juniper Networks Junos OS version 19.3R3-S2, update to a version later than 19.3R3-S2.
For Juniper Networks Junos OS version 19.4R3-S3, update to a version later than 19.4R3-S3.
For Juniper Networks Junos OS versions 20.2R2-S3 through 20.2R3-S2, update to a version later than 20.2R3-S2.
For Juniper Networks Junos OS versions 20.3R2 through 20.3R3, update to a version later than 20.3R3.
For Juniper Networks Junos OS versions 20.4R2 through 20.4R3, update to a version later than 20.4R3.
For Juniper Networks Junos OS versions prior to 21.1R2, update to version 21.1R2 or later.
For Juniper Networks Junos OS Evolved versions prior to 20.4R2-S3-EVO, update to version 20.4R2-S3-EVO or later.
For Juniper Networks Junos OS Evolved versions prior to 20.4R3-EVO, update to version 20.4R3-EVO or later.
For Juniper Networks Junos OS Evolved versions prior to 21.1R2-EVO, update to version 21.1R2-EVO or later.
For Juniper Networks Junos OS Evolved versions prior to 21.2R2-EVO, update to version 21.2R2-EVO or later.
Exploit
Fix
DoS
Improper Handling of Exceptional Conditions
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Related Identifiers
Affected Products
Junos
Junos Evolved