An issue was discovered in Enigmail before 1.9.9. Signature spoofing is possible because the UI does not properly distinguish between an attachment signature, and a signature that applies to the entire containing message, aka TBE-01-021. This is demonstrated by an e-mail message with an attachment that is a signed e-mail message in message/rfc822 format.
The product does not verify, or incorrectly verifies, the cryptographic signature for data.
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Enigmail | Enigmail | * | 1.9.9 (excluding) |
| Enigmail | Ubuntu | artful | * |
| Enigmail | Ubuntu | trusty | * |
| Enigmail | Ubuntu | upstream | * |
| Enigmail | Ubuntu | xenial | * |
| Enigmail | Ubuntu | zesty | * |