Debian DLA-2074-1 : python-apt 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-2074-1. The text
# itself is copyright (C) Software in the Public Interest, Inc.
#

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

if (description)
{
  script_id(133219);
  script_version("1.7");
  script_set_attribute(attribute:"plugin_modification_date", value:"2024/03/29");

  script_cve_id("CVE-2019-15795", "CVE-2019-15796");

  script_name(english:"Debian DLA-2074-1 : python-apt security update");

  script_set_attribute(attribute:"synopsis", value:
"The remote Debian host is missing a security update.");
  script_set_attribute(attribute:"description", value:
"Several issues have been found in python-apt, a python interface to
libapt-pkg.

CVE-2019-15795

It was discovered that python-apt would still use MD5 hashes to
validate certain downloaded packages. If a remote attacker were able
to perform a man-in-the-middle attack, this flaw could potentially be
used to install altered packages.

CVE-2019-15796

It was discovered that python-apt could install packages from
untrusted repositories, contrary to expectations.

For Debian 8 'Jessie', these problems have been fixed in version
0.9.3.13.

We recommend that you upgrade your python-apt 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/2020/01/msg00020.html");
  script_set_attribute(attribute:"see_also", value:"https://packages.debian.org/source/jessie/python-apt");
  script_set_attribute(attribute:"solution", value:
"Upgrade the affected packages.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:H/Au:N/C:N/I:P/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:R/S:C/C:L/I:L/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-2019-15796");

  script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"false");

  script_set_attribute(attribute:"vuln_publication_date", value:"2020/03/26");
  script_set_attribute(attribute:"patch_publication_date", value:"2020/01/23");
  script_set_attribute(attribute:"plugin_publication_date", value:"2020/01/24");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:python-apt");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:python-apt-common");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:python-apt-dbg");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:python-apt-dev");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:python-apt-doc");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:python3-apt");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:python3-apt-dbg");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:debian:debian_linux:8.0");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_family(english:"Debian Local Security Checks");

  script_copyright(english:"This script is Copyright (C) 2020-2024 and is owned by Tenable, Inc. or an Affiliate thereof.");

  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:"python-apt", reference:"0.9.3.13")) flag++;
if (deb_check(release:"8.0", prefix:"python-apt-common", reference:"0.9.3.13")) flag++;
if (deb_check(release:"8.0", prefix:"python-apt-dbg", reference:"0.9.3.13")) flag++;
if (deb_check(release:"8.0", prefix:"python-apt-dev", reference:"0.9.3.13")) flag++;
if (deb_check(release:"8.0", prefix:"python-apt-doc", reference:"0.9.3.13")) flag++;
if (deb_check(release:"8.0", prefix:"python3-apt", reference:"0.9.3.13")) flag++;
if (deb_check(release:"8.0", prefix:"python3-apt-dbg", reference:"0.9.3.13")) flag++;

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