Debian DSA-3673-1 : openssl - security update

#%NASL_MIN_LEVEL 70300
#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were  
# extracted from Debian Security Advisory DSA-3673. The text 
# itself is copyright (C) Software in the Public Interest, Inc.
#

include('deprecated_nasl_level.inc');
include('compat.inc');

if (description)
{
  script_id(93668);
  script_version("2.10");
  script_set_attribute(attribute:"plugin_modification_date", value:"2021/01/11");

  script_cve_id("CVE-2016-2177", "CVE-2016-2178", "CVE-2016-2179", "CVE-2016-2180", "CVE-2016-2181", "CVE-2016-2182", "CVE-2016-2183", "CVE-2016-6302", "CVE-2016-6303", "CVE-2016-6304", "CVE-2016-6306");
  script_xref(name:"DSA", value:"3673");

  script_name(english:"Debian DSA-3673-1 : openssl - security update");
  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:
"Several vulnerabilities were discovered in OpenSSL :

  - CVE-2016-2177
    Guido Vranken discovered that OpenSSL uses undefined
    pointer arithmetic. Additional information can be found
    at
    https://www.openssl.org/blog/blog/2016/06/27/undefined-p
    ointer-arithmetic/

  - CVE-2016-2178
    Cesar Pereida, Billy Brumley and Yuval Yarom discovered
    a timing leak in the DSA code.

  - CVE-2016-2179 / CVE-2016-2181
    Quan Luo and the OCAP audit team discovered denial of
    service vulnerabilities in DTLS.

  - CVE-2016-2180 / CVE-2016-2182 / CVE-2016-6303
    Shi Lei discovered an out-of-bounds memory read in
    TS_OBJ_print_bio() and an out-of-bounds write in
    BN_bn2dec() and MDC2_Update().

  - CVE-2016-2183
    DES-based cipher suites are demoted from the HIGH group
    to MEDIUM as a mitigation for the SWEET32 attack.

  - CVE-2016-6302
    Shi Lei discovered that the use of SHA512 in TLS session
    tickets is susceptible to denial of service.

  - CVE-2016-6304
    Shi Lei discovered that excessively large OCSP status
    request may result in denial of service via memory
    exhaustion.

  - CVE-2016-6306
    Shi Lei discovered that missing message length
    validation when parsing certificates may potentially
    result in denial of service."
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://security-tracker.debian.org/tracker/CVE-2016-2177"
  );
  # https://www.openssl.org/blog/blog/2016/06/27/undefined-pointer-arithmetic/
  script_set_attribute(
    attribute:"see_also",
    value:"http://www.nessus.org/u?6824788b"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://security-tracker.debian.org/tracker/CVE-2016-2178"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://security-tracker.debian.org/tracker/CVE-2016-2179"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://security-tracker.debian.org/tracker/CVE-2016-2181"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://security-tracker.debian.org/tracker/CVE-2016-2180"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://security-tracker.debian.org/tracker/CVE-2016-2182"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://security-tracker.debian.org/tracker/CVE-2016-6303"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://security-tracker.debian.org/tracker/CVE-2016-2183"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://security-tracker.debian.org/tracker/CVE-2016-6302"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://security-tracker.debian.org/tracker/CVE-2016-6304"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://security-tracker.debian.org/tracker/CVE-2016-6306"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://packages.debian.org/source/jessie/openssl"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://www.debian.org/security/2016/dsa-3673"
  );
  script_set_attribute(
    attribute:"solution", 
    value:
"Upgrade the openssl packages.

For the stable distribution (jessie), these problems have been fixed
in version 1.0.1t-1+deb8u4."
  );
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:C");
  script_set_cvss_temporal_vector("CVSS2#E:U/RL:OF/RC:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:U/RL:O/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:8.0");

  script_set_attribute(attribute:"patch_publication_date", value:"2016/09/22");
  script_set_attribute(attribute:"plugin_publication_date", value:"2016/09/23");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2016-2021 and is owned by Tenable, Inc. or an Affiliate thereof.");
  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:"8.0", prefix:"libcrypto1.0.0-udeb", reference:"1.0.1t-1+deb8u4")) flag++;
if (deb_check(release:"8.0", prefix:"libssl-dev", reference:"1.0.1t-1+deb8u4")) flag++;
if (deb_check(release:"8.0", prefix:"libssl-doc", reference:"1.0.1t-1+deb8u4")) flag++;
if (deb_check(release:"8.0", prefix:"libssl1.0.0", reference:"1.0.1t-1+deb8u4")) flag++;
if (deb_check(release:"8.0", prefix:"libssl1.0.0-dbg", reference:"1.0.1t-1+deb8u4")) flag++;
if (deb_check(release:"8.0", prefix:"openssl", reference:"1.0.1t-1+deb8u4")) flag++;

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