SB2023010430 - Ubuntu update for freeradius
Published: January 4, 2023
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 3 vulnerabilities.
1) Resource management error (CVE-ID: CVE-2019-17185)
CWE-ID: CWE-399 - Resource Management Errors
CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to the EAP-pwd module uses a global OpenSSL BN_CTX instance to handle all
handshakes. This mean multiple threads use the same BN_CTX instance
concurrently, resulting in crashes when concurrent EAP-pwd handshakes
are initiated. A remote attacker can perform multiple login attempts and crash the daemon.
2) NULL pointer dereference (CVE-ID: CVE-2022-41860)
CWE-ID: CWE-476 - NULL Pointer Dereference
CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to a NULL pointer dereference error within the EAP-SIM module when parsing an unknown SIM option. A remote attacker can send specially crafted data to the application and perform a denial of service (DoS) attack.
3) Input validation error (CVE-ID: CVE-2022-41861)
CWE-ID: CWE-20 - Improper input validation
CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
The vulnerability allows a remote user to perform a denial of service (DoS) attack.
The vulnerability exists due to insufficient validation of user-supplied input. A malicious RADIUS client or home server can send a malformed
abinary attribute, which can cause the server to crash.
Remediation
Install update from vendor's website.