Sipwise C5 NGCP CSC CSRF Click2Dial Exploit
Title: Sipwise C5 NGCP CSC CSRF Click2Dial Exploit
Advisory ID: ZSL-2021-5649
Type: Local/Remote
Impact: Cross-Site Scripting
Risk: (4/5)
Release Date: 23.04.2021
Apache/2.2.16 (Debian)
nginx
[19.04.2021] Contact with the vendor.
[22.04.2021] No response from the vendor.
[23.04.2021] Public security advisory released.
[26.04.2021] Vendor responds with clarification of vulnerable versions and working on fixes.
[26.04.2021] The 'call2dial' was only available in www_csc, which has not been used for 7 years now.
[2] https://nvd.nist.gov/vuln/detail/CVE-2021-31584
[3] https://www.exploit-db.com/exploits/49801
[4] https://packetstormsecurity.com/files/162318
[5] https://cxsecurity.com/issue/WLB-2021040135
[6] https://exchange.xforce.ibmcloud.com/vulnerabilities/200606
[7] https://www.incibe-cert.es/alerta-temprana/vulnerabilidades/cve-2021-31584
[8] https://www.tenable.com/cve/CVE-2021-31584
[9] https://cve.report/CVE-2021-31584
[25.04.2021] - Added reference [5], [6], [7], [8] and [9]
[06.05.2021] - Changed affected version and added vendor status
Web: https://www.zeroscience.mk
e-mail: lab@zeroscience.mk
Advisory ID: ZSL-2021-5649
Type: Local/Remote
Impact: Cross-Site Scripting
Risk: (4/5)
Release Date: 23.04.2021
Summary
Sipwise C5 (also known as NGCP - the Next Generation Communication Platform) is a SIP-based Open Source Class 5 VoIP soft-switch platform that allows you to provide rich telephony services. It offers a wide range of features (e.g. call forwarding, voicemail, conferencing etc.) that can be configured by end users in the self-care web interface. For operators, it offers a web-based administrative panel that allows them to configure subscribers, SIP peerings, billing profiles, and other entities. The administrative web panel also shows the real-time statistics for the whole system. For tight integration into existing infrastructures, Sipwise C5 provides a powerful REST API interface.Description
The application interface allows users to perform certain actions via HTTP requests without performing any validity checks to verify the requests. This can be exploited to perform certain actions with administrative privileges if a logged-in user visits a malicious web site.Vendor
Sipwise GmbH - https://www.sipwise.comAffected Version
NGCP www_admin version 3.6.7Tested On
Apache/2.2.22 (Debian)Apache/2.2.16 (Debian)
nginx
Vendor Status
[13.04.2021] Vulnerability discovered.[19.04.2021] Contact with the vendor.
[22.04.2021] No response from the vendor.
[23.04.2021] Public security advisory released.
[26.04.2021] Vendor responds with clarification of vulnerable versions and working on fixes.
[26.04.2021] The 'call2dial' was only available in www_csc, which has not been used for 7 years now.
PoC
sipwise_csrf.txtCredits
Vulnerability discovered by Gjoko Krstic - <gjoko@zeroscience.mk>References
[1] https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-31584[2] https://nvd.nist.gov/vuln/detail/CVE-2021-31584
[3] https://www.exploit-db.com/exploits/49801
[4] https://packetstormsecurity.com/files/162318
[5] https://cxsecurity.com/issue/WLB-2021040135
[6] https://exchange.xforce.ibmcloud.com/vulnerabilities/200606
[7] https://www.incibe-cert.es/alerta-temprana/vulnerabilidades/cve-2021-31584
[8] https://www.tenable.com/cve/CVE-2021-31584
[9] https://cve.report/CVE-2021-31584
Changelog
[23.04.2021] - Initial release[25.04.2021] - Added reference [5], [6], [7], [8] and [9]
[06.05.2021] - Changed affected version and added vendor status
Contact
Zero Science LabWeb: https://www.zeroscience.mk
e-mail: lab@zeroscience.mk
