The remote Redhat Enterprise Linux 6 / 7 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2015:0066 advisory.

    OpenSSL is a toolkit that implements the Secure Sockets Layer (SSL),     Transport Layer Security (TLS), and Datagram Transport Layer Security     (DTLS) protocols, as well as a full-strength, general purpose cryptography     library.

    A NULL pointer dereference flaw was found in the DTLS implementation of     OpenSSL. A remote attacker could send a specially crafted DTLS message,     which would cause an OpenSSL server to crash. (CVE-2014-3571)

    A memory leak flaw was found in the way the dtls1_buffer_record() function     of OpenSSL parsed certain DTLS messages. A remote attacker could send     multiple specially crafted DTLS messages to exhaust all available memory of     a DTLS server. (CVE-2015-0206)

    It was found that OpenSSL's BigNumber Squaring implementation could produce     incorrect results under certain special conditions. This flaw could     possibly affect certain OpenSSL library functionality, such as RSA     blinding. Note that this issue occurred rarely and with a low probability,     and there is currently no known way of exploiting it. (CVE-2014-3570)

    It was discovered that OpenSSL would perform an ECDH key exchange with a     non-ephemeral key even when the ephemeral ECDH cipher suite was selected.
    A malicious server could make a TLS/SSL client using OpenSSL use a weaker     key exchange method than the one requested by the user. (CVE-2014-3572)

    It was discovered that OpenSSL would accept ephemeral RSA keys when using     non-export RSA cipher suites. A malicious server could make a TLS/SSL     client using OpenSSL use a weaker key exchange method. (CVE-2015-0204)

    Multiple flaws were found in the way OpenSSL parsed X.509 certificates.
    An attacker could use these flaws to modify an X.509 certificate to produce     a certificate with a different fingerprint without invalidating its     signature, and possibly bypass fingerprint-based blacklisting in     applications. (CVE-2014-8275)

    It was found that an OpenSSL server would, under certain conditions, accept     Diffie-Hellman client certificates without the use of a private key.
    An attacker could use a user's client certificate to authenticate as that     user, without needing the private key. (CVE-2015-0205)

    All OpenSSL users are advised to upgrade to these updated packages, which     contain a backported patch to mitigate the above issues. For the update to     take effect, all services linked to the OpenSSL library (such as httpd and     other SSL-enabled services) must be restarted or the system rebooted.

Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

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RHEL 6 / 7 : openssl (RHSA-2015:0066)

medium Nessus Plugin ID 80879

Version 1.25