Debian DLA-1304-1 : zsh 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 DLA-1304-1. The text
# itself is copyright (C) Software in the Public Interest, Inc.
#

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

if (description)
{
  script_id(107276);
  script_version("1.3");
  script_set_attribute(attribute:"plugin_modification_date", value:"2021/01/11");

  script_name(english:"Debian DLA-1304-1 : zsh security update");
  script_summary(english:"Checks dpkg output for the updated packages.");

  script_set_attribute(
    attribute:"synopsis", 
    value:"The remote Debian host is missing a security update."
  );
  script_set_attribute(
    attribute:"description", 
    value:
"It was discovered that there were multiple vulnerabilities in the
'zsh' shell :

  - CVE-2014-10070: Fix a privilege-elevation issue if the
    environment has not been properly sanitized.

  - CVE-2014-10071: Prevent a buffer overflow for very long
    file

  - descriptors in the '>& fd' syntax.

  - CVE-2014-10072: Correct a buffer overflow when scanning
    very long directory paths for symbolic links.

  - CVE-2016-10714: Fix an off-by-one error that was
    resulting in undersized buffers that were intended to
    support PATH_MAX.

  - CVE-2017-18206: Fix a buffer overflow in symlink
    expansion.

For Debian 7 'Wheezy', this issue has been fixed in zsh version
4.3.17-1+deb7u1.

We recommend that you upgrade your zsh packages.

NOTE: Tenable Network Security has extracted the preceding description
block directly from the DLA 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://lists.debian.org/debian-lts-announce/2018/03/msg00007.html"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://packages.debian.org/source/wheezy/zsh"
  );
  script_set_attribute(attribute:"solution", value:"Upgrade the affected packages.");
  script_set_attribute(attribute:"risk_factor", value:"High");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:zsh");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:zsh-dbg");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:zsh-dev");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:zsh-doc");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:zsh-static");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:debian:debian_linux:7.0");

  script_set_attribute(attribute:"patch_publication_date", value:"2018/03/09");
  script_set_attribute(attribute:"plugin_publication_date", value:"2018/03/12");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2018-2021 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:"zsh", reference:"4.3.17-1+deb7u1")) flag++;
if (deb_check(release:"7.0", prefix:"zsh-dbg", reference:"4.3.17-1+deb7u1")) flag++;
if (deb_check(release:"7.0", prefix:"zsh-dev", reference:"4.3.17-1+deb7u1")) flag++;
if (deb_check(release:"7.0", prefix:"zsh-doc", reference:"4.3.17-1+deb7u1")) flag++;
if (deb_check(release:"7.0", prefix:"zsh-static", reference:"4.3.17-1+deb7u1")) 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");