Debian DLA-2282-1 : rails security update

#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Debian Security Advisory DLA-2282-1. The text
# itself is copyright (C) Software in the Public Interest, Inc.
#

include('compat.inc');

if (description)
{
  script_id(138781);
  script_version("1.4");
  script_set_attribute(attribute:"plugin_modification_date", value:"2024/02/29");

  script_cve_id("CVE-2020-8163", "CVE-2020-8164", "CVE-2020-8165");

  script_name(english:"Debian DLA-2282-1 : rails security update");

  script_set_attribute(attribute:"synopsis", value:
"The remote Debian host is missing a security update.");
  script_set_attribute(attribute:"description", value:
"Multiple vulnerabilities were found in Ruby on Rails, a MVC ruby-based
framework geared for web application development, which could lead to
remote code execution and untrusted user input usage, depending on the
application.

CVE-2020-8163

A code injection vulnerability in Rails would allow an attacker who
controlled the `locals` argument of a `render` call to perform a RCE.

CVE-2020-8164

A deserialization of untrusted data vulnerability exists in rails
which can allow an attacker to supply information can be inadvertently
leaked from Strong Parameters.

CVE-2020-8165

A deserialization of untrusted data vulnernerability exists in rails
that can allow an attacker to unmarshal user-provided objects in
MemCacheStore and RedisCacheStore potentially resulting in an RCE.

For Debian 9 stretch, these problems have been fixed in version
2:4.2.7.1-1+deb9u3.

We recommend that you upgrade your rails packages.

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

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/2020/07/msg00013.html");
  script_set_attribute(attribute:"see_also", value:"https://packages.debian.org/source/stretch/rails");
  script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/source-package/rails");
  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:P/A:P");
  script_set_cvss_temporal_vector("CVSS2#E:POC/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:H/A:H");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:P/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2020-8165");

  script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"true");

  script_set_attribute(attribute:"vuln_publication_date", value:"2020/06/19");
  script_set_attribute(attribute:"patch_publication_date", value:"2020/07/20");
  script_set_attribute(attribute:"plugin_publication_date", value:"2020/07/21");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:rails");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:ruby-actionmailer");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:ruby-actionpack");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:ruby-actionview");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:ruby-activejob");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:ruby-activemodel");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:ruby-activerecord");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:ruby-activesupport");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:ruby-rails");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:ruby-railties");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:debian:debian_linux:9.0");
  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:"9.0", prefix:"rails", reference:"2:4.2.7.1-1+deb9u3")) flag++;
if (deb_check(release:"9.0", prefix:"ruby-actionmailer", reference:"2:4.2.7.1-1+deb9u3")) flag++;
if (deb_check(release:"9.0", prefix:"ruby-actionpack", reference:"2:4.2.7.1-1+deb9u3")) flag++;
if (deb_check(release:"9.0", prefix:"ruby-actionview", reference:"2:4.2.7.1-1+deb9u3")) flag++;
if (deb_check(release:"9.0", prefix:"ruby-activejob", reference:"2:4.2.7.1-1+deb9u3")) flag++;
if (deb_check(release:"9.0", prefix:"ruby-activemodel", reference:"2:4.2.7.1-1+deb9u3")) flag++;
if (deb_check(release:"9.0", prefix:"ruby-activerecord", reference:"2:4.2.7.1-1+deb9u3")) flag++;
if (deb_check(release:"9.0", prefix:"ruby-activesupport", reference:"2:4.2.7.1-1+deb9u3")) flag++;
if (deb_check(release:"9.0", prefix:"ruby-rails", reference:"2:4.2.7.1-1+deb9u3")) flag++;
if (deb_check(release:"9.0", prefix:"ruby-railties", reference:"2:4.2.7.1-1+deb9u3")) 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");