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CVE-2021-31377

Junos OS: A local authenticated attacker can cause RPD to core

Published
Last modified
published
Not listed in CISA KEV
Fix
Fixed in 15.1R7-S9, 17.3R3-S12, 18.1R3-S13, 18.2R3-S8, 18.3R3-S5, and 2 more
None on Exploit-DB, Metasploit or GitHub

Summary

An Incorrect Permission Assignment for Critical Resource vulnerability of a certain file in the filesystem of Junos OS allows a local authenticated attacker to cause routing process daemon (RPD) to crash and restart, causing a Denial of Service (DoS). Repeated actions by the attacker will create a sustained Denial of Service (DoS) condition. This issue affects: Juniper Networks Junos OS: 15.1 versions prior to 15.1R7-S9; 17.3 versions prior to 17.3R3-S12; 17.4 versions prior to 17.4R2-S13, 17.4R3-S5; 18.1 versions prior to 18.1R3-S13; 18.2 versions prior to 18.2R3-S8; 18.3 versions prior to 18.3R3-S5; 18.4 versions prior to 18.4R2-S8, 18.4R3-S7; 19.1 versions prior to 19.1R2-S3, 19.1R3-S5; 19.2 versions prior to 19.2R3-S2; 19.3 versions prior to 19.3R2-S6, 19.3R3-S2; 19.4 versions prior to 19.4R1-S4, 19.4R2-S4, 19.4R3-S2; 20.1 versions prior to 20.1R2-S2, 20.1R3; 20.2 versions prior to 20.2R2-S3, 20.2R3; 20.3 versions prior to 20.3R3; 20.4 versions prior to 20.4R1-S1, 20.4R2.

Timeline

  1. CVE published
  2. Record last updated

Affected versions

  • Juniper Networks Junos OS

    From 15.1 · fixed in 15.1R7-S9; From 17.3 · fixed in 17.3R3-S12; From 18.1 · fixed in 18.1R3-S13; From 18.2 · fixed in 18.2R3-S8; From 18.3 · fixed in 18.3R3-S5; From 19.2 · fixed in 19.2R3-S2; From 20.3 · fixed in 20.3R3

References 1

kb.juniper.net