Linux Distros Unpatched Vulnerability : CVE-2021-46195

#%NASL_MIN_LEVEL 80900
##
# (C) Tenable, Inc.
##

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"The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied
patch available.

  - GCC v12.0 was discovered to contain an uncontrolled recursion via the component libiberty/rust-demangle.c.
    This vulnerability allows attackers to cause a Denial of Service (DoS) by consuming excessive CPU and
    memory resources. (CVE-2021-46195)

Note that Nessus relies on the presence of the package as reported by the vendor.");
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          {"reference": "gcc-toolset-11-libquadmath-devel"},
          {"reference": "gcc-toolset-11-libstdc++-devel"},
          {"reference": "gcc-toolset-11-libstdc++-docs"},
          {"reference": "gcc-toolset-11-libtsan-devel"},
          {"reference": "gcc-toolset-11-libubsan-devel"}
        ]
      }
    ]
  },
  "Red Hat Enterprise Linux-8": {
    "package_manager": "rpm-list",
    "constraints": [
      {
        "release": "8",
        "pkgs": [
          {"reference": "gcc-toolset-11-gcc"},
          {"reference": "gcc-toolset-11-gcc-c++"},
          {"reference": "gcc-toolset-11-gcc-gdb-plugin"},
          {"reference": "gcc-toolset-11-gcc-gfortran"},
          {"reference": "gcc-toolset-11-gcc-plugin-devel"},
          {"reference": "gcc-toolset-11-libasan-devel"},
          {"reference": "gcc-toolset-11-libatomic-devel"},
          {"reference": "gcc-toolset-11-libgccjit"},
          {"reference": "gcc-toolset-11-libgccjit-devel"},
          {"reference": "gcc-toolset-11-libgccjit-docs"},
          {"reference": "gcc-toolset-11-libitm-devel"},
          {"reference": "gcc-toolset-11-liblsan-devel"},
          {"reference": "gcc-toolset-11-libquadmath-devel"},
          {"reference": "gcc-toolset-11-libstdc++-devel"},
          {"reference": "gcc-toolset-11-libstdc++-docs"},
          {"reference": "gcc-toolset-11-libtsan-devel"},
          {"reference": "gcc-toolset-11-libubsan-devel"}
        ]
      }
    ]
  },
  "Red Hat Enterprise Linux-9": {
    "package_manager": "rpm-list",
    "constraints": [
      {
        "release": "9",
        "pkgs": [
          {"reference": "cpp"},
          {"reference": "gcc"},
          {"reference": "gcc-c++"},
          {"reference": "gcc-gfortran"},
          {"reference": "gcc-offload-nvptx"},
          {"reference": "gcc-plugin-annobin"},
          {"reference": "gcc-plugin-devel"},
          {"reference": "libasan"},
          {"reference": "libatomic"},
          {"reference": "libgcc"},
          {"reference": "libgccjit"},
          {"reference": "libgccjit-devel"},
          {"reference": "libgfortran"},
          {"reference": "libgomp"},
          {"reference": "libgomp-offload-nvptx"},
          {"reference": "libitm"},
          {"reference": "libitm-devel"},
          {"reference": "liblsan"},
          {"reference": "libquadmath"},
          {"reference": "libquadmath-devel"},
          {"reference": "libstdc++"},
          {"reference": "libstdc++-devel"},
          {"reference": "libstdc++-docs"},
          {"reference": "libstdc++-static"},
          {"reference": "libtsan"},
          {"reference": "libubsan"}
        ]
      }
    ]
  }
};

var distro_constraints_values = linux_unpatched::get_distro_constraints(distro_constraints_arr:distro_constraints_array);
if (empty_or_null(distro_constraints_values)) audit(AUDIT_HOST_NOT, 'affected');

var third_party_support = get_kb_item('Host/OS/extended-third-party');
if (!empty_or_null(third_party_support)) {
    var third_party_vendors = distro_constraints_values['third_party'];
    if (!empty_or_null(third_party_vendors)) {
        var vendor;
        foreach vendor (third_party_vendors) {
            if (vendor == third_party_support) exit(0, 'A third party management patch is available for this vulnerability from ' + vendor + '.\n');
        }
    }
}

var report = linux_unpatched::check_unpatched_constraints(distro_constraints_values:distro_constraints_values);

if (!empty_or_null(report))
{
  security_report_v4(
      port       : 0,
      severity   : SECURITY_WARNING,
      extra      : report
  );
  exit(0);
}
else
{
  audit(AUDIT_HOST_NOT, 'affected');
}