The openssl gem for Ruby uses the same initialization vector (IV) in GCM Mode (aes-*-gcm) when the IV is set before the key, which makes it easier for context-dependent attackers to bypass the encryption protection mechanism.
Weakness
The product stores or transmits sensitive data using an encryption scheme that is theoretically sound, but is not strong enough for the level of protection required.
Affected Software
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Openssl | Ruby-lang | * | 2.0.0 (excluding) |
| Ruby-attr-encrypted | Ubuntu | artful | * |
| Ruby-attr-encrypted | Ubuntu | esm-apps/xenial | * |
| Ruby-attr-encrypted | Ubuntu | xenial | * |
| Ruby-attr-encrypted | Ubuntu | yakkety | * |
| Ruby-attr-encrypted | Ubuntu | zesty | * |
| Ruby-encryptor | Ubuntu | artful | * |
| Ruby-encryptor | Ubuntu | esm-apps/xenial | * |
| Ruby-encryptor | Ubuntu | xenial | * |
| Ruby-encryptor | Ubuntu | yakkety | * |
| Ruby-encryptor | Ubuntu | zesty | * |
| Ruby1.8 | Ubuntu | precise | * |
| Ruby1.9.1 | Ubuntu | precise | * |
| Ruby1.9.1 | Ubuntu | trusty | * |
| Ruby2.0 | Ubuntu | trusty | * |
| Ruby2.3 | Ubuntu | artful | * |
| Ruby2.3 | Ubuntu | esm-infra/xenial | * |
| Ruby2.3 | Ubuntu | xenial | * |
| Ruby2.3 | Ubuntu | yakkety | * |
| Ruby2.3 | Ubuntu | zesty | * |
Potential Mitigations
Related Attack Patterns
- https://cwe.mitre.org/data/definitions/112.html
- https://cwe.mitre.org/data/definitions/192.html
- https://cwe.mitre.org/data/definitions/20.html
References
- http://www.openwall.com/lists/oss-security/2016/09/19/9
- http://www.openwall.com/lists/oss-security/2016/09/30/6
- http://www.openwall.com/lists/oss-security/2016/10/01/2
- http://www.securityfocus.com/bid/93031
- https://github.com/ruby/openssl/commit/8108e0a6db133f3375608303fdd2083eb5115062
- https://github.com/ruby/openssl/issues/49
- https://lists.debian.org/debian-lts-announce/2018/07/msg00012.html
- https://www.debian.org/security/2017/dsa-3966
- http://www.openwall.com/lists/oss-security/2016/09/19/9
- http://www.openwall.com/lists/oss-security/2016/09/30/6
- http://www.openwall.com/lists/oss-security/2016/10/01/2
- http://www.securityfocus.com/bid/93031
- https://github.com/ruby/openssl/commit/8108e0a6db133f3375608303fdd2083eb5115062
- https://github.com/ruby/openssl/issues/49
- https://lists.debian.org/debian-lts-announce/2018/07/msg00012.html
- https://www.debian.org/security/2017/dsa-3966