medium
6.8
CWE
22
Advisory Published
Updated

CVE-2021-0231: Junos OS: SRX, vSRX Series: J-Web Path traversal vulnerability in SRX and vSRX Series leads to information disclosure.

First published: Thu Apr 22 2021(Updated: )

A path traversal vulnerability in the Juniper Networks SRX and vSRX Series may allow an authenticated J-web user to read sensitive system files. This issue affects Juniper Networks Junos OS on SRX and vSRX Series: 19.3 versions prior to 19.3R2-S6, 19.3R3-S1; 19.4 versions prior to 19.4R2-S4, 19.4R3; 20.1 versions prior to 20.1R1-S4, 20.1R2; 20.2 versions prior to 20.2R1-S3, 20.2R2; This issue does not affect Juniper Networks Junos OS versions prior to 19.3R1.

Credit: sirt@juniper.net

Affected SoftwareAffected VersionHow to fix
Juniper JUNOS=19.3
Juniper JUNOS=19.3-r1
Juniper JUNOS=19.3-r1-s1
Juniper JUNOS=19.3-r2
Juniper JUNOS=19.3-r2-s1
Juniper JUNOS=19.3-r2-s2
Juniper JUNOS=19.3-r2-s3
Juniper JUNOS=19.3-r2-s4
Juniper JUNOS=19.3-r2-s5
Juniper JUNOS=19.3-r3
Juniper JUNOS=19.4-r1
Juniper JUNOS=19.4-r1-s1
Juniper JUNOS=19.4-r1-s2
Juniper JUNOS=19.4-r2
Juniper JUNOS=19.4-r2-s1
Juniper JUNOS=19.4-r2-s2
Juniper JUNOS=19.4-r2-s3
Juniper JUNOS=20.1-r1
Juniper JUNOS=20.1-r1-s1
Juniper JUNOS=20.1-r1-s2
Juniper JUNOS=20.1-r1-s3
Juniper JUNOS=20.2-r1
Juniper JUNOS=20.2-r1-s1
Juniper JUNOS=20.2-r1-s2
Juniper vSRX
Juniper Srx1500
Juniper Srx300
Juniper Srx320
Juniper Srx340
Juniper Srx345
Juniper Srx380
Juniper Srx4100
Juniper Srx4200
Juniper Srx4600
Juniper Srx5400
Juniper Srx550
Juniper Srx5600
Juniper Srx5800

Remedy

The following software releases have been updated to resolve this specific issue: 19.3R2-S6, 19.3R3-S1, 19.4R2-S4, 19.4R3, 20.1R1-S4, 20.1R2, 20.2R1-S3, 20.2R2, 20.3R1, and all subsequent releases.

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Reference Links

Frequently Asked Questions

  • What is CVE-2021-0231?

    CVE-2021-0231 is a path traversal vulnerability in the Juniper Networks SRX and vSRX Series that may allow an authenticated J-web user to read sensitive system files.

  • Which Junos OS versions are affected by CVE-2021-0231?

    Junos OS versions 19.3 prior to 19.3R2-S6, 19.3R3-S1 and 19.4 prior to 19.4R2-S4, 19.4R3 are affected by CVE-2021-0231.

  • How can an authenticated J-web user exploit CVE-2021-0231?

    An authenticated J-web user can exploit CVE-2021-0231 by performing a path traversal attack to read sensitive system files.

  • What is the severity of CVE-2021-0231?

    CVE-2021-0231 has a severity score of 6.5 (medium).

  • Where can I find more information about CVE-2021-0231?

    You can find more information about CVE-2021-0231 in the Juniper Networks Security Advisories page.

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