Description:
| Several functions inside OpenSSL incorrectly checked the result aftercalling the EVP_VerifyFinal function, allowing a malformed signatureto be treated as a good signature rather than as an error. This issueaffected the signature checks on DSA and ECDSA keys used withSSL/TLS.One way to exploit this flaw would be for a remote attacker who is incontrol of a malicious server or who can use a 'man in the middle'attack to present a malformed SSL/TLS signature from a certificate chainto a vulnerable client, bypassing validation. |
![.:[ packet storm ]:.](/images/ps-ani.gif)
