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CVE PROGRAM SOURCE RECORD7.5 High

CVE-2021-31351

Junos OS: MX Series: Receipt of specific packet on MS-MPC/MS-MIC causes line card reset

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Status
Published
Published
Updated
Assigning organization
juniper

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;

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

Juniper Networks Junos OS

  • unspecified to < 15.1unaffected
  • 17.3 to < 17.3R3-S11unaffected
  • 17.4R3 to < 17.4*unaffected

Juniper Networks Junos OS

  • 17.3R3-S11affected
  • 18.1R3-S12affected
  • 18.3R3-S4affected
  • 18.4R3-S7affected
  • 19.1R3-S4, 19.1R3-S5affected
  • 19.2R1-S6affected
  • 19.3R3-S2affected
  • 19.4R3-S2affected
  • 20.1R2-S1affected
  • 20.2R3affected
  • 20.3R2affected
  • 17.4R2-S13 to < 17.4*affected
  • 18.2R2-S8, 18.2R3-S7 to < 18.2*affected
  • 18.4R1-S8, 18.4R2-S7 to < 18.4*affected
  • 19.4R2-S4 to < 19.4*affected
  • 20.2R2-S2 to < 20.2*affected
  • 20.3R1-S2 to < 20.3*affected
  • 20.4 to < 20.4R2-S1, 20.4R3affected
  • 21.1 to < 21.1R1-S1, 21.1R2affected

References