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CVE-2023-36845: Junos OS: EX and SRX Series: A PHP vulnerability in J-Web allows an unauthenticated to control an important environment variable

Critical · CVSS 9.8 (CVSS 3.1)KEV known exploitedEPSS 95.1%, 100th percentilePublished Updated Assigner: juniper

In CISA’s Known Exploited Vulnerabilities catalog: Juniper Junos OS EX Series and SRX Series PHP External Variable Modification Vulnerability.

Added , federal remediation due . Known ransomware use: Unknown.

Required action: Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.

Description

A PHP External Variable Modification vulnerability in J-Web of Juniper Networks Junos OS on EX Series and SRX Series allows an unauthenticated, network-based attacker to remotely execute code. Using a crafted request which sets the variable PHPRC an attacker is able to modify the PHP execution environment allowing the injection und execution of code. This issue affects Juniper Networks Junos OS on EX Series and SRX 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 22.3R2-S2, 22.3R3-S1; * 22.4 versions prior to 22.4R2-S1, 22.4R3; * 23.2 versions prior to 23.2R1-S1, 23.2R2.

Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H · CWE-473

Status incidents that name it

No tracked status incident names this CVE.

Affected vendors and products

Juniper Networks: Junos OS

References

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