The remote Redhat Enterprise Linux 6 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2016:0591 advisory.

    Network Security Services (NSS) is a set of libraries designed to support the cross-platform development     of security-enabled client and server applications. The nss-util packages provide utilities for use with     the Network Security Services (NSS) libraries. Netscape Portable Runtime (NSPR) provides platform     independence for non-GUI operating system facilities.

    The following packages have been upgraded to a newer upstream version: nss 3.21.0, nss-util 3.21.0, nspr     4.11.0. (BZ#1300629, BZ#1299874, BZ#1299861)

    Security Fix(es):

    * A use-after-free flaw was found in the way NSS handled DHE (Diffie-Hellman key exchange) and ECDHE     (Elliptic Curve Diffie-Hellman key exchange) handshake messages. A remote attacker could send a specially     crafted handshake message that, when parsed by an application linked against NSS, would cause that     application to crash or, under certain special conditions, execute arbitrary code using the permissions of     the user running the application. (CVE-2016-1978)

    * A use-after-free flaw was found in the way NSS processed certain DER (Distinguished Encoding Rules)     encoded cryptographic keys. An attacker could use this flaw to create a specially crafted DER encoded     certificate which, when parsed by an application compiled against the NSS library, could cause that     application to crash, or execute arbitrary code using the permissions of the user running the application.
    (CVE-2016-1979)

    Red Hat would like to thank the Mozilla Project for reporting these issues. Upstream acknowledges Eric     Rescorla as the original reporter of CVE-2016-1978; and Tim Taubert as the original reporter of     CVE-2016-1979.

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.

Detections

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RHEL 6 : nss, nss-util, and nspr (RHSA-2016:0591)

high Nessus Plugin ID 90386

Version 2.13