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Juniper Junos OS: 2021-10 Security Bulletin: Junos OS and Junos OS Evolved: RPD core upon receipt of specific BGP update (JSA11218) (CVE-2021-31353)

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Juniper Junos OS: 2021-10 Security Bulletin: Junos OS and Junos OS Evolved: RPD core upon receipt of specific BGP update (JSA11218) (CVE-2021-31353)

Severity
5
CVSS
(AV:N/AC:L/Au:N/C:N/I:N/A:P)
Published
10/19/2021
Created
03/21/2022
Added
03/21/2022
Modified
03/21/2022

Description

An Improper Handling of Exceptional Conditions vulnerability in Juniper Networks Junos OS and Junos OS Evolved 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. This issue affects very specific versions of Juniper Networks Junos OS: 19.3R3-S2; 19.4R3-S3; 20.2 versions 20.2R2-S3 and later, prior to 20.2R3-S2; 20.3 versions 20.3R2 and later, prior to 20.3R3; 20.4 versions 20.4R2 and later, prior to 20.4R3; 21.1 versions prior to 21.1R2. Juniper Networks Junos OS 20.1 is not affected by this issue. This issue also affects Juniper Networks Junos OS Evolved: All 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.

Solution(s)

  • juniper-junos-os-upgrade-latest

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