Debian DLA-2254-1 : alpine 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-2254-1. The text
# itself is copyright (C) Software in the Public Interest, Inc.
#

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

if (description)
{
  script_id(137841);
  script_version("1.5");
  script_set_attribute(attribute:"plugin_modification_date", value:"2024/03/05");

  script_cve_id("CVE-2020-14929");

  script_name(english:"Debian DLA-2254-1 : alpine security update");

  script_set_attribute(attribute:"synopsis", value:
"The remote Debian host is missing a security update.");
  script_set_attribute(attribute:"description", value:
"CVE-2020-14929

Alpine before 2.23 silently proceeds to use an insecure connection
after a /tls is sent in certain circumstances involving PREAUTH, which
is a less secure behavior than the alternative of closing the
connection and letting the user decide what they would like to do.

For Debian 8 'Jessie', this problem has been fixed in version
2.11+dfsg1-3+deb8u1.

We recommend that you upgrade your alpine 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/2020/06/msg00025.html");
  script_set_attribute(attribute:"see_also", value:"https://packages.debian.org/source/jessie/alpine");
  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-2020-14929");

  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:"2020/06/19");
  script_set_attribute(attribute:"patch_publication_date", value:"2020/06/25");
  script_set_attribute(attribute:"plugin_publication_date", value:"2020/06/26");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:alpine");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:alpine-dbg");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:alpine-doc");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:alpine-pico");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:pilot");
  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:"alpine", reference:"2.11+dfsg1-3+deb8u1")) flag++;
if (deb_check(release:"8.0", prefix:"alpine-dbg", reference:"2.11+dfsg1-3+deb8u1")) flag++;
if (deb_check(release:"8.0", prefix:"alpine-doc", reference:"2.11+dfsg1-3+deb8u1")) flag++;
if (deb_check(release:"8.0", prefix:"alpine-pico", reference:"2.11+dfsg1-3+deb8u1")) flag++;
if (deb_check(release:"8.0", prefix:"pilot", reference:"2.11+dfsg1-3+deb8u1")) 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");