Debian DSA-3983-1 : samba - security update

2017-09-25T00:00:00
ID DEBIAN_DSA-3983.NASL
Type nessus
Reporter This script is Copyright (C) 2017-2018 and is owned by Tenable, Inc. or an Affiliate thereof.
Modified 2020-07-02T00:00:00

Description

Multiple security issues have been discoverd in Samba, a SMB/CIFS file, print, and login server for Unix :

  • CVE-2017-12150 Stefan Metzmacher discovered multiple code paths where SMB signing was not enforced.

  • CVE-2017-12151 Stefan Metzmacher discovered that tools using libsmbclient did not enforce encryption when following DFS redirects, which could allow a man-in-the-middle attacker to read or modify connections which were meant to be encrypted.

  • CVE-2017-12163 Yihan Lian and Zhibin Hu discovered that insufficient range checks in the processing of SMB1 write requests could result in disclosure of server memory.

                                        
                                            #
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were  
# extracted from Debian Security Advisory DSA-3983. The text 
# itself is copyright (C) Software in the Public Interest, Inc.
#

include("compat.inc");

if (description)
{
  script_id(103432);
  script_version("3.5");
  script_cvs_date("Date: 2018/11/10 11:49:38");

  script_cve_id("CVE-2017-12150", "CVE-2017-12151", "CVE-2017-12163");
  script_xref(name:"DSA", value:"3983");

  script_name(english:"Debian DSA-3983-1 : samba - 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:
"Multiple security issues have been discoverd in Samba, a SMB/CIFS
file, print, and login server for Unix :

  - CVE-2017-12150
    Stefan Metzmacher discovered multiple code paths where
    SMB signing was not enforced.

  - CVE-2017-12151
    Stefan Metzmacher discovered that tools using
    libsmbclient did not enforce encryption when following
    DFS redirects, which could allow a man-in-the-middle
    attacker to read or modify connections which were meant
    to be encrypted.

  - CVE-2017-12163
    Yihan Lian and Zhibin Hu discovered that insufficient
    range checks in the processing of SMB1 write requests
    could result in disclosure of server memory."
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://security-tracker.debian.org/tracker/CVE-2017-12150"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://security-tracker.debian.org/tracker/CVE-2017-12151"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://security-tracker.debian.org/tracker/CVE-2017-12163"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://packages.debian.org/source/jessie/samba"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://packages.debian.org/source/stretch/samba"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://www.debian.org/security/2017/dsa-3983"
  );
  script_set_attribute(
    attribute:"solution", 
    value:
"Upgrade the samba packages.

For the oldstable distribution (jessie), these problems have been
fixed in version 2:4.2.14+dfsg-0+deb8u8.

For the stable distribution (stretch), these problems have been fixed
in version 2:4.5.8+dfsg-2+deb9u2."
  );
  script_set_cvss_base_vector("CVSS2#AV:N/AC:M/Au:N/C:P/I:P/A:N");
  script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:samba");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:debian:debian_linux:8.0");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:debian:debian_linux:9.0");

  script_set_attribute(attribute:"patch_publication_date", value:"2017/09/22");
  script_set_attribute(attribute:"plugin_publication_date", value:"2017/09/25");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2017-2018 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:"libnss-winbind", reference:"2:4.2.14+dfsg-0+deb8u8")) flag++;
if (deb_check(release:"8.0", prefix:"libpam-smbpass", reference:"2:4.2.14+dfsg-0+deb8u8")) flag++;
if (deb_check(release:"8.0", prefix:"libpam-winbind", reference:"2:4.2.14+dfsg-0+deb8u8")) flag++;
if (deb_check(release:"8.0", prefix:"libparse-pidl-perl", reference:"2:4.2.14+dfsg-0+deb8u8")) flag++;
if (deb_check(release:"8.0", prefix:"libsmbclient", reference:"2:4.2.14+dfsg-0+deb8u8")) flag++;
if (deb_check(release:"8.0", prefix:"libsmbclient-dev", reference:"2:4.2.14+dfsg-0+deb8u8")) flag++;
if (deb_check(release:"8.0", prefix:"libsmbsharemodes-dev", reference:"2:4.2.14+dfsg-0+deb8u8")) flag++;
if (deb_check(release:"8.0", prefix:"libsmbsharemodes0", reference:"2:4.2.14+dfsg-0+deb8u8")) flag++;
if (deb_check(release:"8.0", prefix:"libwbclient-dev", reference:"2:4.2.14+dfsg-0+deb8u8")) flag++;
if (deb_check(release:"8.0", prefix:"libwbclient0", reference:"2:4.2.14+dfsg-0+deb8u8")) flag++;
if (deb_check(release:"8.0", prefix:"python-samba", reference:"2:4.2.14+dfsg-0+deb8u8")) flag++;
if (deb_check(release:"8.0", prefix:"registry-tools", reference:"2:4.2.14+dfsg-0+deb8u8")) flag++;
if (deb_check(release:"8.0", prefix:"samba", reference:"2:4.2.14+dfsg-0+deb8u8")) flag++;
if (deb_check(release:"8.0", prefix:"samba-common", reference:"2:4.2.14+dfsg-0+deb8u8")) flag++;
if (deb_check(release:"8.0", prefix:"samba-common-bin", reference:"2:4.2.14+dfsg-0+deb8u8")) flag++;
if (deb_check(release:"8.0", prefix:"samba-dbg", reference:"2:4.2.14+dfsg-0+deb8u8")) flag++;
if (deb_check(release:"8.0", prefix:"samba-dev", reference:"2:4.2.14+dfsg-0+deb8u8")) flag++;
if (deb_check(release:"8.0", prefix:"samba-doc", reference:"2:4.2.14+dfsg-0+deb8u8")) flag++;
if (deb_check(release:"8.0", prefix:"samba-dsdb-modules", reference:"2:4.2.14+dfsg-0+deb8u8")) flag++;
if (deb_check(release:"8.0", prefix:"samba-libs", reference:"2:4.2.14+dfsg-0+deb8u8")) flag++;
if (deb_check(release:"8.0", prefix:"samba-testsuite", reference:"2:4.2.14+dfsg-0+deb8u8")) flag++;
if (deb_check(release:"8.0", prefix:"samba-vfs-modules", reference:"2:4.2.14+dfsg-0+deb8u8")) flag++;
if (deb_check(release:"8.0", prefix:"smbclient", reference:"2:4.2.14+dfsg-0+deb8u8")) flag++;
if (deb_check(release:"8.0", prefix:"winbind", reference:"2:4.2.14+dfsg-0+deb8u8")) flag++;
if (deb_check(release:"9.0", prefix:"ctdb", reference:"2:4.5.8+dfsg-2+deb9u2")) flag++;
if (deb_check(release:"9.0", prefix:"libnss-winbind", reference:"2:4.5.8+dfsg-2+deb9u2")) flag++;
if (deb_check(release:"9.0", prefix:"libpam-winbind", reference:"2:4.5.8+dfsg-2+deb9u2")) flag++;
if (deb_check(release:"9.0", prefix:"libparse-pidl-perl", reference:"2:4.5.8+dfsg-2+deb9u2")) flag++;
if (deb_check(release:"9.0", prefix:"libsmbclient", reference:"2:4.5.8+dfsg-2+deb9u2")) flag++;
if (deb_check(release:"9.0", prefix:"libsmbclient-dev", reference:"2:4.5.8+dfsg-2+deb9u2")) flag++;
if (deb_check(release:"9.0", prefix:"libwbclient-dev", reference:"2:4.5.8+dfsg-2+deb9u2")) flag++;
if (deb_check(release:"9.0", prefix:"libwbclient0", reference:"2:4.5.8+dfsg-2+deb9u2")) flag++;
if (deb_check(release:"9.0", prefix:"python-samba", reference:"2:4.5.8+dfsg-2+deb9u2")) flag++;
if (deb_check(release:"9.0", prefix:"registry-tools", reference:"2:4.5.8+dfsg-2+deb9u2")) flag++;
if (deb_check(release:"9.0", prefix:"samba", reference:"2:4.5.8+dfsg-2+deb9u2")) flag++;
if (deb_check(release:"9.0", prefix:"samba-common", reference:"2:4.5.8+dfsg-2+deb9u2")) flag++;
if (deb_check(release:"9.0", prefix:"samba-common-bin", reference:"2:4.5.8+dfsg-2+deb9u2")) flag++;
if (deb_check(release:"9.0", prefix:"samba-dev", reference:"2:4.5.8+dfsg-2+deb9u2")) flag++;
if (deb_check(release:"9.0", prefix:"samba-dsdb-modules", reference:"2:4.5.8+dfsg-2+deb9u2")) flag++;
if (deb_check(release:"9.0", prefix:"samba-libs", reference:"2:4.5.8+dfsg-2+deb9u2")) flag++;
if (deb_check(release:"9.0", prefix:"samba-testsuite", reference:"2:4.5.8+dfsg-2+deb9u2")) flag++;
if (deb_check(release:"9.0", prefix:"samba-vfs-modules", reference:"2:4.5.8+dfsg-2+deb9u2")) flag++;
if (deb_check(release:"9.0", prefix:"smbclient", reference:"2:4.5.8+dfsg-2+deb9u2")) flag++;
if (deb_check(release:"9.0", prefix:"winbind", reference:"2:4.5.8+dfsg-2+deb9u2")) 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");