CVE-2020-1631: Juniper Junos OS Path Traversal Vulnerability

CVE-2020-1631 · Severity: critical · CVSS 9.8 · Exploited in the wild · Published 2022-03-25

A path traversal and local file inclusion (LFI) vulnerability in the HTTP/HTTPS service of Juniper Junos OS allows unauthenticated attackers to read sensitive files, obtain session tokens, or potentially execute commands. The impact varies by configuration, with the highest risk occurring when J-Web is enabled, potentially allowing full administrative access.

Technologies: Juniper Junos OS. Vendors: Juniper.

Quick answers

Is CVE-2020-1631 exploited in the wild?
Yes. CVE-2020-1631 is known to be exploited in the wild, first recorded on 25 March 2022. Treat it as urgent.
How severe is CVE-2020-1631?
Critical severity, with a CVSS score of 9.8, published 25 March 2022.
Which products and versions are affected?
Juniper Networks Junos OS 12.3 versions prior to 12.3R12-S16; 12.3X48 versions prior to 12.3X48-D101, 12.3X48-D105; 14.1X53 versions prior to 14.1X53-D54; 15.1 versions prior to 15.1R7-S7; 15.1X49 versions prior to 15.1X49-D211, 15.1X49-D220; 16.1 versions prior to 16.1R7-S8; 17.2 versions prior to 17.2R3-S4; 17.3 versions prior to 17.3R3-S8; 17.4 versions prior to 17.4R2-S11, 17.4R3-S2; 18.1 versions prior to 18.1R3-S10; 18.2 versions prior to 18.2R2-S7, 18.2R3-S4; 18.3 versions prior to 18.3R2-S4, 18.3R3-S2; 18.4 versions prior to 18.4R1-S7, 18.4R3-S2; 19.1 versions prior to 19.1R1-S5, 19.1R3-S1; 19.2 versions prior to 19.2R2; 19.3 versions prior to 19.3R2-S3, 19.3R3; 19.4 versions prior to 19.4R1-S2, 19.4R2; 20.1 versions prior to 20.1R1-S1, 20.1R2..
Is there a fix for CVE-2020-1631?
No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
How is CVE-2020-1631 attacked?
It is attacked over the network, in an operating system.
Am I affected by CVE-2020-1631?
Check whether you run Juniper Junos OS. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

Affected products

  • Juniper Networks Junos OS 12.3 versions prior to 12.3R12-S16; 12.3X48 versions prior to 12.3X48-D101, 12.3X48-D105; 14.1X53 versions prior to 14.1X53-D54; 15.1 versions prior to 15.1R7-S7; 15.1X49 versions prior to 15.1X49-D211, 15.1X49-D220; 16.1 versions prior to 16.1R7-S8; 17.2 versions prior to 17.2R3-S4; 17.3 versions prior to 17.3R3-S8; 17.4 versions prior to 17.4R2-S11, 17.4R3-S2; 18.1 versions prior to 18.1R3-S10; 18.2 versions prior to 18.2R2-S7, 18.2R3-S4; 18.3 versions prior to 18.3R2-S4, 18.3R3-S2; 18.4 versions prior to 18.4R1-S7, 18.4R3-S2; 19.1 versions prior to 19.1R1-S5, 19.1R3-S1; 19.2 versions prior to 19.2R2; 19.3 versions prior to 19.3R2-S3, 19.3R3; 19.4 versions prior to 19.4R1-S2, 19.4R2; 20.1 versions prior to 20.1R1-S1, 20.1R2.

Timeline

  • 2022-03-25: kev added: Added to CISA Known Exploited Vulnerabilities Catalog
  • 2022-03-25: disclosed

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