CVE の説明
Zammad is a web based open source helpdesk/customer support system. Prior to 7.1.2, when Zammad checks the digital signature on an incoming S/MIME-signed email, it does not verify that the signing certificate is genuinely trusted, it only checks whether a certificate with a matching name is already stored in the system. An attacker can create their own certificate using the name of a real, previously trusted sender and use it to send a forged email. Zammad will display that email with the same "validly signed" indicator as a genuine message from the real sender, even though the attacker never had access to that sender's actual certificate or private key. This issue is fixed in version 7.1.2.
CVE の情報
関連する弱点
| 弱点名 | 出典 | |
|---|---|---|
| Authentication Bypass by Spoofing This attack-focused weakness is caused by incorrectly implemented authentication schemes that are subject to spoofing attacks. |
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| Improper Certificate Validation The product does not validate, or incorrectly validates, a certificate. |
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| Improper Verification of Cryptographic Signature The product does not verify, or incorrectly verifies, the cryptographic signature for data. |
