Vulnerabilities > CVE-2015-8313 - Information Exposure Through Discrepancy vulnerability in multiple products

#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from SUSE update advisory SUSE-SU-2016:0077-1.
# The text itself is copyright (C) SUSE.
#

include("compat.inc");

if (description)
{
  script_id(87887);
  script_version("1.7");
  script_cvs_date("Date: 2020/01/10");

  script_cve_id("CVE-2015-2806", "CVE-2015-8313");
  script_bugtraq_id(73436);

  script_name(english:"SUSE SLED11 / SLES11 Security Update : gnutls (SUSE-SU-2016:0077-1)");
  script_summary(english:"Checks rpm output for the updated packages.");

  script_set_attribute(
    attribute:"synopsis", 
    value:"The remote SUSE host is missing one or more security updates."
  );
  script_set_attribute(
    attribute:"description", 
    value:
"This update for gnutls fixes the following security issues :

  - CVE-2015-8313: First byte of the padding in CBC mode is
    not checked (bsc#957568)

  - CVE-2015-2806: Two-byte stack overflow in
    asn1_der_decoding (bsc#924828)

Note that Tenable Network Security has extracted the preceding
description block directly from the SUSE security advisory. Tenable
has attempted to automatically clean and format it as much as possible
without introducing additional issues."
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.suse.com/show_bug.cgi?id=924828"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.suse.com/show_bug.cgi?id=947271"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.suse.com/show_bug.cgi?id=957568"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://www.suse.com/security/cve/CVE-2015-2806/"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://www.suse.com/security/cve/CVE-2015-8313/"
  );
  # https://www.suse.com/support/update/announcement/2016/suse-su-20160077-1/
  script_set_attribute(
    attribute:"see_also",
    value:"http://www.nessus.org/u?5378d599"
  );
  script_set_attribute(
    attribute:"solution", 
    value:
"To install this SUSE Security Update use YaST online_update.
Alternatively you can run the command listed for your product :

SUSE Linux Enterprise Software Development Kit 11-SP4 :

zypper in -t patch sdksp4-gnutls-12312=1

SUSE Linux Enterprise Software Development Kit 11-SP3 :

zypper in -t patch sdksp3-gnutls-12312=1

SUSE Linux Enterprise Server for VMWare 11-SP3 :

zypper in -t patch slessp3-gnutls-12312=1

SUSE Linux Enterprise Server 11-SP4 :

zypper in -t patch slessp4-gnutls-12312=1

SUSE Linux Enterprise Server 11-SP3 :

zypper in -t patch slessp3-gnutls-12312=1

SUSE Linux Enterprise High Availability Extension 11-SP4 :

zypper in -t patch slehasp4-gnutls-12312=1

SUSE Linux Enterprise High Availability Extension 11-SP3 :

zypper in -t patch slehasp3-gnutls-12312=1

SUSE Linux Enterprise Desktop 11-SP4 :

zypper in -t patch sledsp4-gnutls-12312=1

SUSE Linux Enterprise Desktop 11-SP3 :

zypper in -t patch sledsp3-gnutls-12312=1

SUSE Linux Enterprise Debuginfo 11-SP4 :

zypper in -t patch dbgsp4-gnutls-12312=1

SUSE Linux Enterprise Debuginfo 11-SP3 :

zypper in -t patch dbgsp3-gnutls-12312=1

To bring your system up-to-date, use 'zypper patch'."
  );
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:C/I:C/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:H/PR:N/UI:N/S:U/C:H/I:N/A:N");
  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:novell:suse_linux:gnutls");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:libgnutls-extra26");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:libgnutls26");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:novell:suse_linux:11");

  script_set_attribute(attribute:"vuln_publication_date", value:"2015/04/10");
  script_set_attribute(attribute:"patch_publication_date", value:"2016/01/11");
  script_set_attribute(attribute:"plugin_publication_date", value:"2016/01/13");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2016-2020 and is owned by Tenable, Inc. or an Affiliate thereof.");
  script_family(english:"SuSE Local Security Checks");

  script_dependencies("ssh_get_info.nasl");
  script_require_keys("Host/local_checks_enabled", "Host/cpu", "Host/SuSE/release", "Host/SuSE/rpm-list");

  exit(0);
}


include("audit.inc");
include("global_settings.inc");
include("rpm.inc");


if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
release = get_kb_item("Host/SuSE/release");
if (isnull(release) || release !~ "^(SLED|SLES)") audit(AUDIT_OS_NOT, "SUSE");
os_ver = pregmatch(pattern: "^(SLE(S|D)\d+)", string:release);
if (isnull(os_ver)) audit(AUDIT_UNKNOWN_APP_VER, "SUSE");
os_ver = os_ver[1];
if (! preg(pattern:"^(SLED11|SLES11)$", string:os_ver)) audit(AUDIT_OS_NOT, "SUSE SLED11 / SLES11", "SUSE " + os_ver);

if (!get_kb_item("Host/SuSE/rpm-list")) audit(AUDIT_PACKAGE_LIST_MISSING);

cpu = get_kb_item("Host/cpu");
if (isnull(cpu)) audit(AUDIT_UNKNOWN_ARCH);
if (cpu !~ "^i[3-6]86$" && "x86_64" >!< cpu && "s390x" >!< cpu) audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, "SUSE " + os_ver, cpu);

sp = get_kb_item("Host/SuSE/patchlevel");
if (isnull(sp)) sp = "0";
if (os_ver == "SLES11" && (! preg(pattern:"^(3|4)$", string:sp))) audit(AUDIT_OS_NOT, "SLES11 SP3/4", os_ver + " SP" + sp);
if (os_ver == "SLED11" && (! preg(pattern:"^(3|4)$", string:sp))) audit(AUDIT_OS_NOT, "SLED11 SP3/4", os_ver + " SP" + sp);


flag = 0;
if (rpm_check(release:"SLES11", sp:"4", cpu:"x86_64", reference:"libgnutls26-32bit-2.4.1-24.39.60.1")) flag++;
if (rpm_check(release:"SLES11", sp:"4", cpu:"s390x", reference:"libgnutls26-32bit-2.4.1-24.39.60.1")) flag++;
if (rpm_check(release:"SLES11", sp:"4", reference:"gnutls-2.4.1-24.39.60.1")) flag++;
if (rpm_check(release:"SLES11", sp:"4", reference:"libgnutls-extra26-2.4.1-24.39.60.1")) flag++;
if (rpm_check(release:"SLES11", sp:"4", reference:"libgnutls26-2.4.1-24.39.60.1")) flag++;
if (rpm_check(release:"SLES11", sp:"3", cpu:"x86_64", reference:"libgnutls26-32bit-2.4.1-24.39.60.1")) flag++;
if (rpm_check(release:"SLES11", sp:"3", cpu:"s390x", reference:"libgnutls26-32bit-2.4.1-24.39.60.1")) flag++;
if (rpm_check(release:"SLES11", sp:"3", reference:"gnutls-2.4.1-24.39.60.1")) flag++;
if (rpm_check(release:"SLES11", sp:"3", reference:"libgnutls-extra26-2.4.1-24.39.60.1")) flag++;
if (rpm_check(release:"SLES11", sp:"3", reference:"libgnutls26-2.4.1-24.39.60.1")) flag++;
if (rpm_check(release:"SLED11", sp:"4", cpu:"x86_64", reference:"gnutls-2.4.1-24.39.60.1")) flag++;
if (rpm_check(release:"SLED11", sp:"4", cpu:"x86_64", reference:"libgnutls26-2.4.1-24.39.60.1")) flag++;
if (rpm_check(release:"SLED11", sp:"4", cpu:"x86_64", reference:"libgnutls26-32bit-2.4.1-24.39.60.1")) flag++;
if (rpm_check(release:"SLED11", sp:"4", cpu:"i586", reference:"gnutls-2.4.1-24.39.60.1")) flag++;
if (rpm_check(release:"SLED11", sp:"4", cpu:"i586", reference:"libgnutls26-2.4.1-24.39.60.1")) flag++;
if (rpm_check(release:"SLED11", sp:"3", cpu:"x86_64", reference:"gnutls-2.4.1-24.39.60.1")) flag++;
if (rpm_check(release:"SLED11", sp:"3", cpu:"x86_64", reference:"libgnutls26-2.4.1-24.39.60.1")) flag++;
if (rpm_check(release:"SLED11", sp:"3", cpu:"x86_64", reference:"libgnutls26-32bit-2.4.1-24.39.60.1")) flag++;
if (rpm_check(release:"SLED11", sp:"3", cpu:"i586", reference:"gnutls-2.4.1-24.39.60.1")) flag++;
if (rpm_check(release:"SLED11", sp:"3", cpu:"i586", reference:"libgnutls26-2.4.1-24.39.60.1")) flag++;


if (flag)
{
  if (report_verbosity > 0) security_hole(port:0, extra:rpm_report_get());
  else security_hole(0);
  exit(0);
}
else
{
  tested = pkg_tests_get();
  if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
  else audit(AUDIT_PACKAGE_NOT_INSTALLED, "gnutls");
}

#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were  
# extracted from Debian Security Advisory DSA-3408. The text 
# itself is copyright (C) Software in the Public Interest, Inc.
#

include("compat.inc");

if (description)
{
  script_id(87162);
  script_version("2.6");
  script_cvs_date("Date: 2020/01/10");

  script_cve_id("CVE-2015-8313");
  script_xref(name:"DSA", value:"3408");

  script_name(english:"Debian DSA-3408-1 : gnutls26 - 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:
"It was discovered that GnuTLS, a library implementing the TLS and SSL
protocols, incorrectly validates the first byte of padding in CBC
modes. A remote attacker can possibly take advantage of this flaw to
perform a padding oracle attack."
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://packages.debian.org/source/wheezy/gnutls26"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://www.debian.org/security/2015/dsa-3408"
  );
  script_set_attribute(
    attribute:"solution", 
    value:
"Upgrade the gnutls26 packages.

For the oldstable distribution (wheezy), this problem has been fixed
in version 2.12.20-8+deb7u4."
  );
  script_set_cvss_base_vector("CVSS2#AV:N/AC:M/Au:N/C:P/I:N/A:N");
  script_set_cvss_temporal_vector("CVSS2#E:U/RL:OF/RC:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N");
  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:gnutls26");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:debian:debian_linux:7.0");

  script_set_attribute(attribute:"vuln_publication_date", value:"2019/12/20");
  script_set_attribute(attribute:"patch_publication_date", value:"2015/12/01");
  script_set_attribute(attribute:"plugin_publication_date", value:"2015/12/02");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2015-2020 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:"7.0", prefix:"gnutls-bin", reference:"2.12.20-8+deb7u4")) flag++;
if (deb_check(release:"7.0", prefix:"gnutls26-doc", reference:"2.12.20-8+deb7u4")) flag++;
if (deb_check(release:"7.0", prefix:"guile-gnutls", reference:"2.12.20-8+deb7u4")) flag++;
if (deb_check(release:"7.0", prefix:"libgnutls-dev", reference:"2.12.20-8+deb7u4")) flag++;
if (deb_check(release:"7.0", prefix:"libgnutls-openssl27", reference:"2.12.20-8+deb7u4")) flag++;
if (deb_check(release:"7.0", prefix:"libgnutls26", reference:"2.12.20-8+deb7u4")) flag++;
if (deb_check(release:"7.0", prefix:"libgnutls26-dbg", reference:"2.12.20-8+deb7u4")) flag++;
if (deb_check(release:"7.0", prefix:"libgnutlsxx27", reference:"2.12.20-8+deb7u4")) 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");