Debian DSA-4508-1 : h2o - security update (Ping Flood) (Reset Flood) (Settings Flood)

#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were  
# extracted from Debian Security Advisory DSA-4508. The text 
# itself is copyright (C) Software in the Public Interest, Inc.
#

include('compat.inc');

if (description)
{
  script_id(128181);
  script_version("1.5");
  script_set_attribute(attribute:"plugin_modification_date", value:"2024/05/01");

  script_cve_id("CVE-2019-9512", "CVE-2019-9514", "CVE-2019-9515");
  script_xref(name:"DSA", value:"4508");
  script_xref(name:"CEA-ID", value:"CEA-2019-0643");

  script_name(english:"Debian DSA-4508-1 : h2o - security update (Ping Flood) (Reset Flood) (Settings Flood)");

  script_set_attribute(attribute:"synopsis", value:
"The remote Debian host is missing a security-related update.");
  script_set_attribute(attribute:"description", value:
"Three vulnerabilities were discovered in the HTTP/2 code of the H2O
HTTP server, which could result in denial of service.");
  script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/source-package/h2o");
  script_set_attribute(attribute:"see_also", value:"https://packages.debian.org/source/buster/h2o");
  script_set_attribute(attribute:"see_also", value:"https://www.debian.org/security/2019/dsa-4508");
  script_set_attribute(attribute:"solution", value:
"Upgrade the h2o packages.

For the stable distribution (buster), these problems have been fixed
in version 2.2.5+dfsg2-2+deb10u1.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:C");
  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:N/I:N/A:H");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:U/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2019-9515");

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

  script_set_attribute(attribute:"vuln_publication_date", value:"2019/08/13");
  script_set_attribute(attribute:"patch_publication_date", value:"2019/08/24");
  script_set_attribute(attribute:"plugin_publication_date", value:"2019/08/27");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:h2o");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:debian:debian_linux:10.0");
  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) 2019-2024 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:"10.0", prefix:"h2o", reference:"2.2.5+dfsg2-2+deb10u1")) flag++;
if (deb_check(release:"10.0", prefix:"h2o-doc", reference:"2.2.5+dfsg2-2+deb10u1")) flag++;
if (deb_check(release:"10.0", prefix:"libh2o-dev", reference:"2.2.5+dfsg2-2+deb10u1")) flag++;
if (deb_check(release:"10.0", prefix:"libh2o-dev-common", reference:"2.2.5+dfsg2-2+deb10u1")) flag++;
if (deb_check(release:"10.0", prefix:"libh2o-evloop-dev", reference:"2.2.5+dfsg2-2+deb10u1")) flag++;
if (deb_check(release:"10.0", prefix:"libh2o-evloop0.13", reference:"2.2.5+dfsg2-2+deb10u1")) flag++;
if (deb_check(release:"10.0", prefix:"libh2o0.13", reference:"2.2.5+dfsg2-2+deb10u1")) 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");