PT-2019-12660 · Sangoma · Sangoma Session Border Controller

Riyaz Walikar · Published 2019-10-18 · Updated 2020-08-24 · CVE-2019-12148

Positive Technologies (AI Summary)

CVSS v3.1

9.8

Critical

Base vector

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

Name of the Vulnerable Software and Affected Versions Sangoma Session Border Controller (SBC) version 2.3.23-119 GA

Description The issue allows for an authentication bypass via an argument injection vulnerability involving special characters in the username field. This enables a remote unauthenticated user to log in to the device's admin web portal without providing any credentials. The vulnerability affects the /var/webconfig/gui/Webconfig.inc.php file, specifically the web interface.

Recommendations For Sangoma Session Border Controller (SBC) version 2.3.23-119 GA, as a temporary workaround, consider restricting access to the web interface or limiting the use of special characters in the username field until a patch is available. Additionally, avoid using the username field with special characters in the affected API endpoint until the issue is resolved. At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Exploit

Argument Injection

Weakness Enumeration

CWE-88

Related Identifiers

CVE-2019-12148

Affected Products

Sangoma Session Border Controller

References · 5

• 🔥 http://seclists.org/fulldisclosure/2019/Oct/41 · Exploit
• 🔥 http://packetstormsecurity.com/files/154915/Sangoma-SBC-2.3.23-119-GA-Authentication-Bypass.html · Exploit
• https://nvd.nist.gov/vuln/detail/CVE-2019-12148 · Security Note
• https://osv.dev/vulnerability/CVE-2019-12148 · Vendor Advisory
• https://t.me/defcon_news/27719 · Telegram Post