Issue Summary: The PKCS#12 file processing fails to perform sufficient input validation for files that use Password-Based Message Authentication Code 1 (PBMAC1) integrity mechanism allowing a certificate and private key forgery.
Impact Summary: An attacker impersonating a user can cause a service reading PKCS#12 files to accept forged certificates and private keys with a 1 in 256 probability.
If a service accepting PKCS#12 files is using passwords for authenticating the received files, the attacker can create unencrypted PKCS#12 files that use PBMAC1 authentication that specifies an HMAC key of only one byte, allowing them to craft a file that will be accepted with a 1 in 256 probability. That would then cause the service to accept a certificate and private key controlled by the attacker.
The FIPS modules are not affected by this issue, as the affected code is outside the OpenSSL FIPS module boundary.
Weakness
The product does not validate or incorrectly validates the integrity check values or “checksums” of a message. This may prevent it from detecting if the data has been modified or corrupted in transmission.
Affected Software
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Openssl | Openssl | 3.4.0 (including) | 3.4.6 (excluding) |
| Openssl | Openssl | 3.5.0 (including) | 3.5.7 (excluding) |
| Openssl | Openssl | 3.6.0 (including) | 3.6.3 (excluding) |
| Openssl | Openssl | 4.0.0 (including) | 4.0.0 (including) |
| Red Hat Enterprise Linux 10 | RedHat | openssl-1:3.5.5-4.el10_2 | * |
| Red Hat Enterprise Linux 9 | RedHat | openssl-1:3.5.5-4.el9_8 | * |
| Red Hat Enterprise Linux 9 | RedHat | openssl-1:3.5.5-4.el9_8 | * |
| Red Hat Discovery 2 | RedHat | discovery/discovery-server-rhel9:1782159791 | * |
| Red Hat Discovery 2 | RedHat | discovery/discovery-ui-rhel9:1782166952 | * |
| Red Hat Update Infrastructure 5 | RedHat | rhui5/cds-rhel9:1781525684 | * |
| Red Hat Update Infrastructure 5 | RedHat | rhui5/haproxy-rhel9:1781525671 | * |
| Red Hat Update Infrastructure 5 | RedHat | rhui5/installer-rhel9:1781525693 | * |
| Red Hat Update Infrastructure 5 | RedHat | rhui5/rhua-rhel9:1781525739 | * |
| Nodejs | Ubuntu | esm-apps/jammy | * |
| Nodejs | Ubuntu | jammy | * |
| Openssl | Ubuntu | devel | * |
| Openssl | Ubuntu | questing | * |
| Openssl | Ubuntu | resolute | * |
Potential Mitigations
Related Attack Patterns
- https://cwe.mitre.org/data/definitions/145.html
- https://cwe.mitre.org/data/definitions/463.html
- https://cwe.mitre.org/data/definitions/75.html
References
- https://github.com/openssl/openssl/commit/0300eb9ddce7a0895bf301a4b0c03a9da2313a0f
- https://github.com/openssl/openssl/commit/79eb76a937e474bb7610a0a3dc57131dc8dc6610
- https://github.com/openssl/openssl/commit/85dcbb3abaa4878af5c8fbbe11bce708fcf984a7
- https://github.com/openssl/openssl/commit/ec36f2417c4ddd8cabce4b4a60a3d7a7365f2d81
- https://openssl-library.org/news/secadv/20260609.txt