Debian DLA-2275-1 : ruby-rack security update

#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Debian Security Advisory DLA-2275-1. The text
# itself is copyright (C) Software in the Public Interest, Inc.
#

include('compat.inc');

if (description)
{
  script_id(138389);
  script_version("1.4");
  script_set_attribute(attribute:"plugin_modification_date", value:"2024/03/01");

  script_cve_id("CVE-2020-8161", "CVE-2020-8184");

  script_name(english:"Debian DLA-2275-1 : ruby-rack security update");

  script_set_attribute(attribute:"synopsis", value:
"The remote Debian host is missing a security update.");
  script_set_attribute(attribute:"description", value:
"The following CVEs were reported against src:ruby-rack.

CVE-2020-8161

A directory traversal vulnerability exists in rack < 2.2.0 that allows
an attacker perform directory traversal vulnerability in the
Rack::Directory app that is bundled with Rack which could result in
information disclosure.

CVE-2020-8184

A reliance on cookies without validation/integrity check security
vulnerability exists in rack < 2.2.3, rack < 2.1.4 that makes it is
possible for an attacker to forge a secure or host-only cookie prefix.

For Debian 9 stretch, these problems have been fixed in version
1.6.4-4+deb9u2.

We recommend that you upgrade your ruby-rack packages.

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

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/msg00006.html");
  script_set_attribute(attribute:"see_also", value:"https://packages.debian.org/source/stretch/ruby-rack");
  script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/source-package/ruby-rack");
  script_set_attribute(attribute:"solution", value:
"Upgrade the affected ruby-rack package.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:N/I:P/A:N");
  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:C/C:H/I:N/A:N");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:P/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2020-8184");
  script_set_attribute(attribute:"cvss3_score_source", value:"CVE-2020-8161");

  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:"2020/07/10");
  script_set_attribute(attribute:"plugin_publication_date", value:"2020/07/14");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:ruby-rack");
  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:"ruby-rack", reference:"1.6.4-4+deb9u2")) 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");