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Juniper Junos OS: 2021-10 Security Bulletin: Junos OS: MX Series: Receipt of specific packet on MS-MPC/MS-MIC causes line card reset (JSA11216) (CVE-2021-31351)

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Juniper Junos OS: 2021-10 Security Bulletin: Junos OS: MX Series: Receipt of specific packet on MS-MPC/MS-MIC causes line card reset (JSA11216) (CVE-2021-31351)

Severity
5
CVSS
(AV:N/AC:L/Au:N/C:N/I:N/A:P)
Published
10/14/2021
Created
10/15/2021
Added
10/14/2021
Modified
11/26/2021

Description

An Improper Check for Unusual or Exceptional Conditions in packet processing on the MS-MPC/MS-MIC utilized by Juniper Networks Junos OS allows a malicious attacker to send a specific packet, triggering the MS-MPC/MS-MIC to reset, causing a Denial of Service (DoS). Continued receipt and processing of this packet will create a sustained Denial of Service (DoS) condition. This issue only affects specific versions of Juniper Networks Junos OS on MX Series: 17.3R3-S11; 17.4R2-S13; 17.4R3 prior to 17.4R3-S5; 18.1R3-S12; 18.2R2-S8, 18.2R3-S7, 18.2R3-S8; 18.3R3-S4; 18.4R3-S7; 19.1R3-S4, 19.1R3-S5; 19.2R1-S6; 19.3R3-S2; 19.4R2-S4, 19.4R2-S5; 19.4R3-S2; 20.1R2-S1; 20.2R2-S2, 20.2R2-S3, 20.2R3; 20.3R2, 20.3R2-S1; 20.4R1, 20.4R1-S1, 20.4R2; 21.1R1; This issue does not affect any version of Juniper Networks Junos OS prior to 15.1X49-D240;

Solution(s)

  • juniper-junos-os-upgrade-latest

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