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2021-04 Security Bulletin: Junos OS: Junos Fusion: Hard-coded credentials on satellite devices allows a locally authenticated attacker to elevate their privileges. (CVE-2021-0245)

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Article ID: JSA11138 SECURITY_ADVISORIES Last Updated: 14 Apr 2021Version: 1.0
Product Affected:
This issue affects Junos OS 16.1, 17.1, 17.2, 17.3, 17.4, 18.1, 18.2, 18.3, 18.4, 19.1, 19.2, 19.3, 19.4, 20.1.
Problem:

A Use of Hard-coded Credentials vulnerability in Juniper Networks Junos OS on Junos Fusion satellite devices allows an attacker who is local to the device to elevate their privileges and take control of the device.

This issue affects:

Juniper Networks Junos OS Junos Fusion Satellite Devices.

  • 16.1 versions prior to 16.1R7-S7;
  • 17.1 versions prior to 17.1R2-S12, 17.1R3-S2;
  • 17.2 versions prior to 17.2R3-S4;
  • 17.3 versions prior to 17.3R3-S8;
  • 17.4 versions prior to 17.4R2-S10;
  • 17.4 version 17.4R3 and later versions;
  • 18.1 versions prior to 18.1R3-S10;
  • 18.2 versions prior to 18.2R2-S7, 18.2R3-S3;
  • 18.3 versions prior to 18.3R1-S7, 18.3R2-S4, 18.3R3-S2;
  • 18.4 versions prior to 18.4R1-S6, 18.4R2-S4, 18.4R3-S1;
  • 19.1 versions prior to 19.1R1-S5, 19.1R2-S1, 19.1R3;
  • 19.2 versions prior to 19.2R1-S4, 19.2R2;
  • 19.3 versions prior to 19.3R2-S5, 19.3R3;
  • 19.4 versions prior to 19.4R1-S1, 19.4R2;
  • 20.1 versions prior to 20.1R1-S1, 20.1R2.

This issue does not affected Junos OS releases prior to 16.1R1 or all 19.2R3 and 19.4R3 release versions.

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

This issue was found during internal product security testing or research.

This issue has been assigned CVE-2021-0245.

Solution:

The following software releases have been updated to resolve this specific issue: Junos OS: 16.1R7-S7, 17.1R2-S12, 17.1R3-S2, 17.2R3-S4, 17.3R3-S8, 17.4R2-S10, 18.1R3-S10, 18.2R2-S7, 18.2R3-S3, 18.3R1-S7, 18.3R2-S4, 18.3R3-S2, 18.4R1-S6, 18.4R2-S4, 18.4R3-S1, 19.1R1-S5, 19.1R2-S1, 19.1R3, 19.2R1-S4, 19.2R2, 19.3R2-S5, 19.3R3, 19.4R1-S1, 19.4R2, 20.1R1-S1, 20.1R2, 20.2R1, and all subsequent releases.

This issue is being tracked as 1420426.

Workaround:

There are no viable workarounds for this issue.

To reduce the risk of exploitation of this issue, use access lists or firewall filters to limit access to only trusted administrative networks, hosts and users.

Implementation:
Software releases or updates are available for download at https://support.juniper.net/support/downloads/
Modification History:
2021-04-14: Initial Publication.
CVSS Score:
7.8 (CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H)
Severity Level:
High
Severity Assessment:
Information for how Juniper Networks uses CVSS can be found at KB 16446 "Common Vulnerability Scoring System (CVSS) and Juniper's Security Advisories."

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