Riskcovery

CVE-2020-1667

Junos OS: MX Series: Services card might restart due to a race condition when DNS filtering is enabled.

State
Published
Severity
8.3 High
Published
Oct 16, 2020
Updated
Sep 17, 2024
Reserved
Nov 4, 2019

Read the record on cve.org

Description

When DNS filtering is enabled on Juniper Networks Junos MX Series with one of the following cards MS-PIC, MS-MIC or MS-MPC, an incoming stream of packets processed by the Multiservices PIC Management Daemon (mspmand) process might be bypassed due to a race condition. Due to this vulnerability, mspmand process, responsible for managing "URL Filtering service", can crash, causing the Services PIC to restart. While the Services PIC is restarting, all PIC services including DNS filtering service (DNS sink holing) will be bypassed until the Services PIC completes its boot process. This issue affects Juniper Networks Junos OS: 17.3 versions prior to 17.3R3-S8; 18.3 versions prior to 18.3R3-S1; 18.4 versions prior to 18.4R3; 19.1 versions prior to 19.1R3; 19.2 versions prior to 19.2R2; 19.3 versions prior to 19.3R3. This issue does not affect Juniper Networks Junos OS 17.4, 18.1, and 18.2.

Scores

CVSSScoreVectorSource
3.18.3 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:Ljuniper

Weaknesses

  • CWE-362 Race Condition (Concurrent Execution using Shared Resource with Improper Synchronization)

Affected Products

ProductVersions
Junos OSJuniper Networks
  • 17.3 to before 17.3R3-S8Affected
  • 18.3 to before 18.3R3-S1Affected
  • 18.4 to before 18.4R3Affected
  • 19.1 to before 19.1R3Affected
  • 19.2 to before 19.2R2Affected
  • 19.3 to before 19.3R3Affected
Junos OSJuniper Networks
  • 17.4Not affected
  • 18.1Not affected
  • 18.2Not affected

References

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