Improper Input Validation Affecting openssl package, versions >=1.0.1, <1.0.200

  • Attack Complexity


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  • snyk-id


  • published

    2 Oct 2019

  • disclosed

    16 Mar 2015

  • credit


How to fix?

Upgrade OpenSSL to version 1.0.200 or higher.


OpenSSL is a SSL/TLS and Crypto toolkit. Deprecated in Mac OS and gone in iOS, this spec gives your project non-deprecated OpenSSL support.

Affected versions of this package are vulnerable to Improper Input Validation. OpenSSL is vulnerable to denial of service attacks. The attacks are due to a flaw in the way OpenSSL does the SSLv2 handshake messages. Therefore, when it has SSLv2 and EXPORT-grade cipher suites enabled, attackers can send malicious SSLv2 CLIENT-MASTER-Key messages to cause server failures.