SB2023030813 - Multiple vulnerabilities in Drachtio Server

Description

This security bulletin contains information about 2 vulnerabilities.

1) Incorrect default permissions (CVE-ID: CVE-2022-45473)

CWE-ID: CWE-276 - Incorrect Default Permissions

CVSSv4: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear

The vulnerability allows a local user to gain access to sensitive information.

The vulnerability exists due to incorrect default permissions set for the "/var/log/drachtio" file. A local user with access to the system can view contents of the server log file.

2) Use-after-free (CVE-ID: CVE-2022-45474)

CWE-ID: CWE-416 - Use After Free

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber

The vulnerability allows a remote attacker to compromise vulnerable system.

The vulnerability exists due to a use-after-free error within the event_cb() function in request-handler.cpp. A remote attacker can send a specially crafted request to the server, trigger a use-after-free error and execute arbitrary code.

Successful exploitation of the vulnerability may allow an attacker to compromise vulnerable system.

Remediation

Install update from vendor's website.

References

• https://github.com/drachtio/drachtio-server/issues/241
• https://github.com/drachtio/drachtio-server/commit/f791a9313c58a911ce09f465f4bba594243b29ec
• https://github.com/drachtio/drachtio-server/issues/240
• https://github.com/drachtio/drachtio-server/commit/860f025468feb31c43227153d8fb3f34210a522e