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CVE-2021-31386

Junos OS: When using J-Web with HTTP an attacker may retrieve encryption keys via Person-in-the-Middle attacks.

Published
Last modified
published
Not listed in CISA KEV
Fix
Fixed in 12.3R12-S20, 15.1R7-S11, 18.3R3-S6, 18.4R3-S10, 19.1R3-S7, and 9 more
None on Exploit-DB, Metasploit or GitHub

Summary

A Protection Mechanism Failure vulnerability in the J-Web HTTP service of Juniper Networks Junos OS allows a remote unauthenticated attacker to perform Person-in-the-Middle (PitM) attacks against the device. This issue affects: Juniper Networks Junos OS 12.3 versions prior to 12.3R12-S20; 15.1 versions prior to 15.1R7-S11; 18.3 versions prior to 18.3R3-S6; 18.4 versions prior to 18.4R3-S10; 19.1 versions prior to 19.1R3-S7; 19.2 versions prior to 19.2R3-S4; 19.3 versions prior to 19.3R3-S4; 19.4 versions prior to 19.4R3-S6; 20.1 versions prior to 20.1R3-S2; 20.2 versions prior to 20.2R3-S3; 20.3 versions prior to 20.3R3-S1; 20.4 versions prior to 20.4R3; 21.1 versions prior to 21.1R3; 21.2 versions prior to 21.2R2.

Timeline

  1. CVE published
  2. Record last updated

Affected versions

  • Juniper Networks Junos OS

    From 12.3 · fixed in 12.3R12-S20; From 15.1 · fixed in 15.1R7-S11; From 18.3 · fixed in 18.3R3-S6; From 18.4 · fixed in 18.4R3-S10; From 19.1 · fixed in 19.1R3-S7; From 19.2 · fixed in 19.2R3-S4; From 19.3 · fixed in 19.3R3-S4; From 19.4 · fixed in 19.4R3-S6; From 20.1 · fixed in 20.1R3-S2; From 20.2 · fixed in 20.2R3-S3; From 20.3 · fixed in 20.3R3-S1; From 20.4 · fixed in 20.4R3; From 21.1 · fixed in 21.1R3; From 21.2 · fixed in 21.2R2

References 1

kb.juniper.net