Paper/Archive/CVE-2023-36845

CVE-2023-36845

Juniper Networks Junos OS — Junos OS: EX and SRX Series: A PHP vulnerability in J-Web allows an unauthenticated to control an important environment variable

Description · from the CVE record

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.

Affected

ProductAffectedFixed inSource
Junos OS< 20.4R3-S920.4R3-S9CNA
Junos OS21.1 – < 21.1*21.1*CNA
Junos OS21.2 – < 21.2R3-S721.2R3-S7CNA
Junos OS21.3 – < 21.3R3-S521.3R3-S5CNA
Junos OS21.4 – < 21.4R3-S521.4R3-S5CNA
Junos OS22.1 – < 22.1R3-S422.1R3-S4CNA
Junos OS22.2 – < 22.2R3-S222.2R3-S2CNA
Junos OS22.3 – < 22.3R2-S2, 22.3R3-S122.3R2-S2, 22.3R3-S1CNA
Junos OS22.4 – < 22.4R2-S1, 22.4R322.4R2-S1, 22.4R3CNA
Junos OS23,2 – < 23.2R1-S1, 23.2R223.2R1-S1, 23.2R2CNA

Scores by source

juniper (CNA)9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CISA ADPSSVCExploitation: active · Automatable: yes · Technical impact: total

References

advisorysupportportal.juniper.net/JSA72300refpacketstormsecurity.com/files/174865/Juniper-SRX-Firewall-EX-Switch-Remote-Code-Execution.htmlrefpacketstormsecurity.com/files/176969/Juniper-SRX-Firewall-EX-Switch-Remote-Code-Execution.htmlrefcisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2023-36845kevcisa.gov/known-exploited-vulnerabilities-catalog