Junos OS: Vulnerability in J-Web may allow deserialization without authentication

Summary

An Improper Input Validation vulnerability in the J-Web component of Juniper Networks Junos OS may allow an unauthenticated attacker to access data without proper authorization. Utilizing a crafted POST request, deserialization may occur which could lead to unauthorized local file access or the ability to execute arbitrary commands. This issue affects Juniper Networks Junos OS: all versions prior to 19.1R3-S9; 19.2 versions prior to 19.2R3-S6; 19.3 versions prior to 19.3R3-S7; 19.4 versions prior to 19.4R2-S7, 19.4R3-S9; 20.1 versions prior to 20.1R3-S5; 20.2 versions prior to 20.2R3-S5; 20.3 versions prior to 20.3R3-S5; 20.4 versions prior to 20.4R3-S4; 21.1 versions prior to 21.1R3-S2; 21.2 versions prior to 21.2R3-S1; 21.3 versions prior to 21.3R2-S2, 21.3R3; 21.4 versions prior to 21.4R1-S2, 21.4R2-S1, 21.4R3; 22.1 versions prior to 22.1R1-S1, 22.1R2.

Timeline

1. Oct 18, 2022, 2:46 AM UTCCVE published
2. May 9, 2025, 3:37 PM UTCCISA SSVC assessment

   Exploitation: none · Automatable: no · Technical impact: total

3. May 9, 2025, 3:37 PM UTCRecord last updated

Affected versions

• Juniper Networks Junos OS

  fixed in 19.1R3-S9; From 19.2 · fixed in 19.2R3-S6; From 19.3 · fixed in 19.3R3-S7; From 20.1 · fixed in 20.1R3-S5; From 20.2 · fixed in 20.2R3-S5; From 20.3 · fixed in 20.3R3-S5; From 20.4 · fixed in 20.4R3-S4; From 21.1 · fixed in 21.1R3-S2; From 21.2 · fixed in 21.2R3-S1

References 1