Riskcovery

CVE-2023-36847

Junos OS: EX Series: A vulnerability in J-Web allows an unauthenticated attacker to upload arbitrary files

State
Published
Severity
5.3 Medium
Published
Aug 17, 2023
Updated
Oct 21, 2025
Reserved
Jun 27, 2023

Read the record on cve.org

Description

A Missing Authentication for Critical Function vulnerability in Juniper Networks Junos OS on EX Series allows an unauthenticated, network-based attacker to cause limited impact to the file system integrity.

With a specific request to installAppPackage.php that doesn't require authentication an attacker is able to upload arbitrary files via J-Web, leading to a loss of

integrity

for a certain

part of the file system, which may allow chaining to other vulnerabilities.

This issue affects Juniper Networks Junos OS on EX Series:

* All versions prior to 20.4R3-S8; * 21.1 versions 21.1R1 and later; * 21.2 versions prior to 21.2R3-S6; * 21.3 versions

prior to

21.3R3-S5; * 21.4 versions

prior to

21.4R3-S4; * 22.1 versions

prior to

22.1R3-S3; * 22.2 versions

prior to

22.2R3-S1; * 22.3 versions

prior to

22.3R2-S2, 22.3R3; * 22.4 versions

prior to

22.4R2-S1, 22.4R3.

Scores

CVSSScoreVectorSource
3.15.3 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:Njuniper

Weaknesses

  • CWE-306 Missing Authentication for Critical Function

Affected Products

ProductVersions
Junos OSJuniper Networks
  • before 20.4R3-S8Affected
  • 21.1 to before 21.1*Affected
  • 21.2 to before 21.2R3-S6Affected
  • 21.3 to before 21.3R3-S5Affected
  • 21.4 to before 21.4R3-S4Affected
  • 22.1 to before 22.1R3-S3Affected
  • 22.2 to before 22.2R3-S1Affected
  • 22.3 to before 22.3R2-S2, 22.3R3Affected
  • 22.4 to before 22.4R2-S1, 22.4R3Affected

References

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