Ubuntu update for pam-pkcs11
| Risk | High |
| Patch available | YES |
| Number of vulnerabilities | 3 |
| CVE-ID | CVE-2025-24531 CVE-2025-24032 CVE-2025-24031 |
| CWE-ID | CWE-287 CWE-476 |
| Exploitation vector | Network |
| Public exploit | N/A |
| Vulnerable software |
Ubuntu Operating systems & Components / Operating system libpam-pkcs11 (Ubuntu package) Operating systems & Components / Operating system package or component |
| Vendor | Canonical Ltd. |
Security Bulletin
This security bulletin contains information about 3 vulnerabilities.
1) Improper authentication
EUVDB-ID: #VU106020
Risk: High
CVSSv4.0: 8.1 [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]
CVE-ID: CVE-2025-24531
CWE-ID:
CWE-287 - Improper Authentication
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to bypass authentication process.
The vulnerability exists due to an incorrect error handling during authentication requests. A remote attacker can bypass authentication process and gain unauthorized access to the application.
MitigationUpdate the affected package pam-pkcs11 to the latest version.
Vulnerable software versionsUbuntu: 16.04 - 24.10
libpam-pkcs11 (Ubuntu package): before Ubuntu Pro
CPE2.3- cpe:2.3:o:canonical:ubuntu:16.04:*:*:*:*:*:*:*
- cpe:2.3:o:canonical:ubuntu:18.04:*:*:*:*:*:*:*
- cpe:2.3:o:canonical:ubuntu:20.04:*:*:*:*:*:*:*
- cpe:2.3:o:canonical:ubuntu:22.04:*:*:*:*:*:*:*
- cpe:2.3:o:canonical:ubuntu:24.04:*:*:*:*:*:*:*
- cpe:2.3:o:canonical:ubuntu:24.10:*:*:*:*:*:*:*
- cpe:2.3:o:canonical:libpam-pkcs11_ubuntu_package:*:*:*:*:*:ubuntu:*:*
https://ubuntu.com/security/notices/USN-7363-1
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) Improper authentication
EUVDB-ID: #VU106019
Risk: High
CVSSv4.0: 6.9 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:U/U:Amber]
CVE-ID: CVE-2025-24032
CWE-ID:
CWE-287 - Improper Authentication
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to bypass authentication process.
The vulnerability exists due to the default cert_policy value is set to "none". A remote attacker can forge a token and bypass authentication process.
Update the affected package pam-pkcs11 to the latest version.
Vulnerable software versionsUbuntu: 16.04 - 24.10
libpam-pkcs11 (Ubuntu package): before Ubuntu Pro
CPE2.3 External linkshttps://ubuntu.com/security/notices/USN-7363-1
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) NULL pointer dereference
EUVDB-ID: #VU106021
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-2025-24031
CWE-ID:
CWE-476 - NULL Pointer Dereference
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to a NULL pointer dereference error in pam_get_pwd. A remote attacker can pass specially crafted data to the application and perform a denial of service (DoS) attack.
MitigationUpdate the affected package pam-pkcs11 to the latest version.
Vulnerable software versionsUbuntu: 16.04 - 24.10
libpam-pkcs11 (Ubuntu package): before Ubuntu Pro
CPE2.3 External linkshttps://ubuntu.com/security/notices/USN-7363-1
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.
