Riskcovery

CVE-2023-36844

Junos OS: EX Series: A PHP vulnerability in J-Web allows an unauthenticated attacker to control important environment variables

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 PHP External Variable Modification vulnerability in J-Web of Juniper Networks Junos OS on EX Series allows an unauthenticated, network-based attacker to control certain, important environment variables.

Using a crafted request an attacker is able to modify

certain PHP environment variables leading to partial loss of integrity, which may allow chaining to other vulnerabilities. This issue affects Juniper Networks Junos OS on EX Series:

* All versions prior to 20.4R3-S9; * 21.1 versions 21.1R1 and later; * 21.2 versions prior to 21.2R3-S7; * 21.3 versions

prior to

21.3R3-S5; * 21.4 versions

prior to

21.4R3-S5; * 22.1 versions

prior to

22.1R3-S4; * 22.2 versions

prior to

22.2R3-S2; * 22.3 versions

prior to 22.3R3-S1; * 22.4 versions

prior to

22.4R2-S2, 22.4R3; * 23.2 versions prior to

23.2R1-S1, 23.2R2.

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-473 PHP External Variable Modification

Affected Products

ProductVersions
Junos OSJuniper Networks
  • before 20.4R3-S9Affected
  • 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-S5Affected
  • 22.1 to before 22.1R3-S4Affected
  • 22.2 to before 22.2R3-S2Affected
  • 22.3 to before 22.3R3-S1Affected
  • 22.4 to before 22.4R2-S2, 22.4R3Affected
  • 23.2 to before 23.2R1-S1, 23.2R2Affected

References

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