Junos OS: Path traversal vulnerability in J-Web

Summary

A Path Traversal vulnerability in the J-Web component of Juniper Networks Junos OS allows an authenticated attacker to upload arbitrary files to the device by bypassing validation checks built into Junos OS. The attacker should not be able to execute the file due to validation checks built into Junos OS. Successful exploitation of this vulnerability could lead to loss of filesystem integrity. 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 19.4R3-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, 3:35 PM UTCCISA SSVC assessment

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

3. May 9, 2025, 3:35 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 19.4 · fixed in 19.4R3-S9; 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