Junos OS: Path traversal vulnerability in J-Web

Description

A path traversal vulnerability in the Juniper Networks Junos OS device may allow an authenticated J-web user to read files with 'world' readable permission and delete files with 'world' writeable permission. This issue does not affect system files that can be accessed only by root user. This issue affects Juniper Networks Junos OS: 12.3 versions prior to 12.3R12-S13; 12.3X48 versions prior to 12.3X48-D85 on SRX Series; 14.1X53 versions prior to 14.1X53-D51; 15.1F6 versions prior to 15.1F6-S13; 15.1 versions prior to 15.1R7-S5; 15.1X49 versions prior to 15.1X49-D180 on SRX Series; 15.1X53 versions prior to 15.1X53-D238 on QFX5200/QFX5110 Series; 16.1 versions prior to 16.1R4-S13, 16.1R7-S5; 16.2 versions prior to 16.2R2-S10; 17.1 versions prior to 17.1R3-S1; 17.2 versions prior to 17.2R1-S9, 17.2R3-S2; 17.3 versions prior to 17.3R2-S5, 17.3R3-S5; 17.4 versions prior to 17.4R2-S9, 17.4R3; 18.1 versions prior to 18.1R3-S8; 18.2 versions prior to 18.2R3; 18.3 versions prior to 18.3R2-S3, 18.3R3; 18.4 versions prior to 18.4R2; 19.1 versions prior to 19.1R1-S4, 19.1R2.

Scores

EPSS (exploitation in 30 days)

0.93% · top 39% of all CVEs (6 Nov 2026)

The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 5.4.

Weakness

• CWE-22 Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') (opens in a new tab)All about CWE-22 and its CVEs

Affected products

• Juniper Networks · Junos OS

  • affected 12.3 – < 12.3R12-S13
  • affected 14.1X53 – < 14.1X53-D51
  • affected 15.1F6 – < 15.1F6-S13
  • affected 15.1 – < 15.1R7-S5
  • affected 16.1 – < 16.1R4-S13, 16.1R7-S5
  • affected 16.2 – < 16.2R2-S10
  • affected 17.1 – < 17.1R3-S1
  • affected 17.2 – < 17.2R1-S9, 17.2R3-S2
  • affected 17.3 – < 17.3R2-S5, 17.3R3-S5
  • affected 17.4 – < 17.4R2-S9, 17.4R3
  • affected 18.1 – < 18.1R3-S8
  • affected 18.2 – < 18.2R3
  • affected 18.3 – < 18.3R2-S3, 18.3R3
  • affected 18.4 – < 18.4R2
  • affected 19.1 – < 19.1R1-S4, 19.1R2

• Juniper Networks · Junos OS

  • affected 12.3X48 – < 12.3X48-D85
  • affected 15.1X49 – < 15.1X49-D180

• Juniper Networks · Junos OS

  • affected 15.1X53 – < 15.1X53-D238

• Juniper Networks · Junos OS

  • affected 15.1X53 – < 15.1X53-D592

What to do

Solution: The following software releases have been updated to resolve this specific issue: 12.3R12-S13, 12.3X48-D85, 14.1X53-D51, 15.1F6-S13, 15.1R7-S5, 15.1X49-D180, 15.1X53-D238, 16.1R4-S13, 16.1R7-S5, 16.2R2-S10, 17.1R3-S1, 17.2R1-S9, 17.2R3-S2, 17.3R2-S5, 17.3R3-S5, 17.4R2-S9, 17.4R3, 18.1R3-S8, 18.2R3, 18.3R2-S3, 18.3R3, 18.4R2, 19.1R1-S4, 19.1R2, 19.2R1, and all subsequent releases.

Workaround: Limit access to the J-Web interface to only trusted users to reduce risks of exploitation of this vulnerability.

Exploitation: Juniper SIRT is not aware of any malicious exploitation of this vulnerability.

References (1)

• https://kb.juniper.net/JSA10985 (opens in a new tab)x_refsource_CONFIRMx_transferred

Sources

The same CVE in the primary databases and aggregators, to check against.

• CVE.org record (opens in a new tab)
• CVE List JSON (GitHub) (opens in a new tab)
• NVD (opens in a new tab)
• FIRST EPSS (opens in a new tab)
• OSV.dev (opens in a new tab)
• GitHub Advisories (opens in a new tab)
• CIRCL Vulnerability-Lookup (opens in a new tab)

Badge for a README or a ticket

[![CVE-2020-1606](https://trackcve.app/badge/CVE-2020-1606.svg)](https://trackcve.app/cve/CVE-2020-1606)

Record last updated 17 Sept 2024, 02:15 UTC.