Debian DLA-2651-1 : python-django 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-2651-1. The text
# itself is copyright (C) Software in the Public Interest, Inc.
#

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

if (description)
{
  script_id(149339);
  script_version("1.3");
  script_set_attribute(attribute:"plugin_modification_date", value:"2021/05/17");

  script_cve_id("CVE-2021-31542");

  script_name(english:"Debian DLA-2651-1 : python-django 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 was potential directory-traversal
vulnerability in Django, a popular Python-based web development
framework.

The MultiPartParser, UploadedFile and FieldFile classes allowed
directory-traversal via uploaded files with suitably crafted file
names. In order to mitigate this risk, stricter basename and path
sanitation is now applied. Specifically, empty file names and paths
with dot segments are rejected.

For Debian 9 'Stretch', this problem has been fixed in version
1:1.10.7-2+deb9u13.

We recommend that you upgrade your python-django packages.

For the detailed security status of python-django please refer to its
security tracker page at:
https://security-tracker.debian.org/tracker/python-django

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/2021/05/msg00005.html"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://packages.debian.org/source/stretch/python-django"
  );
  # https://security-tracker.debian.org/tracker/source-package/python-django
  script_set_attribute(
    attribute:"see_also",
    value:"http://www.nessus.org/u?22eb32f6"
  );
  script_set_attribute(attribute:"solution", value:"Upgrade the affected packages.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/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:L/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:"cvss_score_source", value:"CVE-2021-31542");
  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:python-django");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:python-django-common");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:python-django-doc");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:python3-django");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:debian:debian_linux:9.0");

  script_set_attribute(attribute:"vuln_publication_date", value:"2021/05/05");
  script_set_attribute(attribute:"patch_publication_date", value:"2021/05/06");
  script_set_attribute(attribute:"plugin_publication_date", value:"2021/05/07");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 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:"9.0", prefix:"python-django", reference:"1:1.10.7-2+deb9u13")) flag++;
if (deb_check(release:"9.0", prefix:"python-django-common", reference:"1:1.10.7-2+deb9u13")) flag++;
if (deb_check(release:"9.0", prefix:"python-django-doc", reference:"1:1.10.7-2+deb9u13")) flag++;
if (deb_check(release:"9.0", prefix:"python3-django", reference:"1:1.10.7-2+deb9u13")) 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");