Published: 22/10/2019 Updated: 24/08/2020

CVSS v2 Base Score: 5 | Impact Score: 2.9 | Exploitability Score: 10

CVSS v3 Base Score: 9.8 | Impact Score: 5.9 | Exploitability Score: 3.9

VMScore: 445

Vector: AV:N/AC:L/Au:N/C:N/I:P/A:N

The Sangoma Session Border Controller (SBC) 2.3.23-119 GA web interface is vulnerable to Argument Injection via special characters in the username field. Upon successful exploitation, a remote unauthenticated user can create a local system user with sudo privileges, and use that user to login to the system (either via the web interface or via SSH) to achieve complete compromise of the device. This affects /var/webconfig/gui/Webconfig.inc.php and /usr/local/sng/bin/sng-user-mgmt.

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sangoma session_border_controller_firmware 2.3.23-119-ga

Full Disclosure mailing list archives   By Date By Thread </form>    Sangoma SBC local sudo user creation vulnerability without authentication - CVE-2019-12147  ...

CWE-88 http://packetstormsecurity.com/files/154914/Sangoma-SBC-2.3.23-119-GA-Unauthenticated-User-Creation.html https://blog.appsecco.com http://seclists.org/fulldisclosure/2019/Oct/40 https://nvd.nist.gov http://seclists.org/fulldisclosure/2019/Oct/40

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CVE-2019-12147

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