Ubuntu update for freeradius



Risk Medium
Patch available YES
Number of vulnerabilities 3
CVE-ID CVE-2019-17185
CVE-2022-41860
CVE-2022-41861
CWE-ID CWE-399
CWE-476
CWE-20
Exploitation vector Network
Public exploit N/A
Vulnerable software
 Ubuntu
Operating systems & Components / Operating system

freeradius (Ubuntu package)
Operating systems & Components / Operating system package or component

Vendor Canonical Ltd.

Security Bulletin

This security bulletin contains information about 3 vulnerabilities.

1) Resource management error

EUVDB-ID: #VU27346

Risk: Medium

CVSSv4.0: 6.6 [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]

CVE-ID: CVE-2019-17185

CWE-ID: CWE-399 - Resource Management Errors

Exploit availability: No

Description

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.

Mitigation

Update the affected package freeradius to the latest version.

Vulnerable software versions

Ubuntu: 16.04 - 22.04

freeradius (Ubuntu package): before Ubuntu Pro (Infra-only)

CPE2.3 External links

https://ubuntu.com/security/notices/USN-5785-1


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

2) NULL pointer dereference

EUVDB-ID: #VU70505

Risk: Medium

CVSSv4.0: 6.6 [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]

CVE-ID: CVE-2022-41860

CWE-ID: CWE-476 - NULL Pointer Dereference

Exploit availability: No

Description

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.

Mitigation

Update the affected package freeradius to the latest version.

Vulnerable software versions

Ubuntu: 16.04 - 22.04

freeradius (Ubuntu package): before Ubuntu Pro (Infra-only)

CPE2.3 External links

https://ubuntu.com/security/notices/USN-5785-1


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

3) Input validation error

EUVDB-ID: #VU70506

Risk: Low

CVSSv4.0: 4.6 [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]

CVE-ID: CVE-2022-41861

CWE-ID: CWE-20 - Improper input validation

Exploit availability: No

Description

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.

Mitigation

Update the affected package freeradius to the latest version.

Vulnerable software versions

Ubuntu: 16.04 - 22.04

freeradius (Ubuntu package): before Ubuntu Pro (Infra-only)

CPE2.3 External links

https://ubuntu.com/security/notices/USN-5785-1


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated privileged user via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.



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