Debian DSA-2833-1 : openssl - several vulnerabilities

2014-01-02T00:00:00
ID DEBIAN_DSA-2833.NASL
Type nessus
Reporter Tenable
Modified 2018-07-09T00:00:00

Description

Multiple security issues have been fixed in OpenSSL: The TLS 1.2 support was susceptible to denial of service and retransmission of DTLS messages was fixed. In addition this update disables the insecure Dual_EC_DRBG algorithm (which was unused anyway, see http://marc.info/?l=openssl-announce&m=138747119822324&w=2 for further information) and no longer uses the RdRand feature available on some Intel CPUs as a sole source of entropy unless explicitly requested.

                                        
                                            #
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were  
# extracted from Debian Security Advisory DSA-2833. The text 
# itself is copyright (C) Software in the Public Interest, Inc.
#

include("compat.inc");

if (description)
{
  script_id(71781);
  script_version("1.7");
  script_cvs_date("Date: 2018/07/09 14:30:25");

  script_cve_id("CVE-2013-6449", "CVE-2013-6450");
  script_bugtraq_id(64530);
  script_xref(name:"DSA", value:"2833");

  script_name(english:"Debian DSA-2833-1 : openssl - several vulnerabilities");
  script_summary(english:"Checks dpkg output for the updated package");

  script_set_attribute(
    attribute:"synopsis", 
    value:"The remote Debian host is missing a security-related update."
  );
  script_set_attribute(
    attribute:"description", 
    value:
"Multiple security issues have been fixed in OpenSSL: The TLS 1.2
support was susceptible to denial of service and retransmission of
DTLS messages was fixed. In addition this update disables the insecure
Dual_EC_DRBG algorithm (which was unused anyway, see
http://marc.info/?l=openssl-announce&m=138747119822324&w=2 for further
information) and no longer uses the RdRand feature available on some
Intel CPUs as a sole source of entropy unless explicitly requested."
  );
  script_set_attribute(
    attribute:"see_also",
    value:"http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=732754"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=732710"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"http://marc.info/?l=openssl-announce&m=138747119822324&w=2"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://packages.debian.org/source/wheezy/openssl"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"http://www.debian.org/security/2014/dsa-2833"
  );
  script_set_attribute(
    attribute:"solution", 
    value:
"Upgrade the openssl packages.

For the stable distribution (wheezy), these problems have been fixed
in version 1.0.1e-2+deb7u1."
  );
  script_set_cvss_base_vector("CVSS2#AV:N/AC:M/Au:N/C:N/I:P/A:P");
  script_set_cvss_temporal_vector("CVSS2#E:U/RL:OF/RC:C");
  script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"false");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:openssl");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:debian:debian_linux:7.0");

  script_set_attribute(attribute:"patch_publication_date", value:"2014/01/01");
  script_set_attribute(attribute:"plugin_publication_date", value:"2014/01/02");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2014-2018 Tenable Network Security, Inc.");
  script_family(english:"Debian Local Security Checks");

  script_dependencies("ssh_get_info.nasl");
  script_require_keys("Host/local_checks_enabled", "Host/Debian/release", "Host/Debian/dpkg-l");

  exit(0);
}


include("audit.inc");
include("debian_package.inc");


if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
if (!get_kb_item("Host/Debian/release")) audit(AUDIT_OS_NOT, "Debian");
if (!get_kb_item("Host/Debian/dpkg-l")) audit(AUDIT_PACKAGE_LIST_MISSING);


flag = 0;
if (deb_check(release:"7.0", prefix:"libssl-dev", reference:"1.0.1e-2+deb7u1")) flag++;
if (deb_check(release:"7.0", prefix:"libssl-doc", reference:"1.0.1e-2+deb7u1")) flag++;
if (deb_check(release:"7.0", prefix:"libssl1.0.0", reference:"1.0.1e-2+deb7u1")) flag++;
if (deb_check(release:"7.0", prefix:"libssl1.0.0-dbg", reference:"1.0.1e-2+deb7u1")) flag++;
if (deb_check(release:"7.0", prefix:"openssl", reference:"1.0.1e-2+deb7u1")) flag++;

if (flag)
{
  if (report_verbosity > 0) security_warning(port:0, extra:deb_report_get());
  else security_warning(0);
  exit(0);
}
else audit(AUDIT_HOST_NOT, "affected");