CVE-2019-12147

Name: CVE-2019-12147
Creator: NVD / NIST
Published: 2019-10-22T16:15:10.707+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

CRITICALCVSS 9.8/10EPSS 2.60%

Last modified Jun 17, 2026

CVE-2019-12147 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. 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. EPSS estimates a 2.60% chance of exploitation in the next 30 days.

Description

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.

Metrics

CVSS 3.1

9.8/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS Probability

2.60%

83.4th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-88

Affected Software

Vendor	Product	Versions
Sangoma	Session Border Controller Firmware	2.3.23-119-ga

References

http://packetstormsecurity.com/files/154914/Sangoma-SBC-2.3.23-119-GA-Unauthenticated-User-Creation.htmlExploit, Third Party Advisory, VDB Entry
http://seclists.org/fulldisclosure/2019/Oct/40Exploit, Mailing List, Third Party Advisory
https://blog.appsecco.comNot Applicable
http://packetstormsecurity.com/files/154914/Sangoma-SBC-2.3.23-119-GA-Unauthenticated-User-Creation.htmlExploit, Third Party Advisory, VDB Entry
http://seclists.org/fulldisclosure/2019/Oct/40Exploit, Mailing List, Third Party Advisory
https://blog.appsecco.comNot Applicable

Timeline

Published: Oct 22, 2019
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2019-12147?

How severe is CVE-2019-12147?

CVE-2019-12147 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 2.60% probability of exploitation in the next 30 days.

How do I fix CVE-2019-12147?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2019-12147?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST