Debian DLA-2286-1 : tomcat8 security update

#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Debian Security Advisory DLA-2286-1. The text
# itself is copyright (C) Software in the Public Interest, Inc.
#

include('compat.inc');

if (description)
{
  script_id(138859);
  script_version("1.8");
  script_set_attribute(attribute:"plugin_modification_date", value:"2024/02/29");

  script_cve_id("CVE-2020-13934", "CVE-2020-13935");
  script_xref(name:"IAVA", value:"2020-A-0316-S");
  script_xref(name:"CEA-ID", value:"CEA-2021-0004");

  script_name(english:"Debian DLA-2286-1 : tomcat8 security update");

  script_set_attribute(attribute:"synopsis", value:
"The remote Debian host is missing a security update.");
  script_set_attribute(attribute:"description", value:
"Several security vulnerabilities have been discovered in the Tomcat
servlet and JSP engine.

CVE-2020-13934

An h2c direct connection to Apache Tomcat did not release the HTTP/1.1
processor after the upgrade to HTTP/2. If a sufficient number of such
requests were made, an OutOfMemoryException could occur leading to a
denial of service.

CVE-2020-13935

The payload length in a WebSocket frame was not correctly validated in
Apache Tomcat. Invalid payload lengths could trigger an infinite loop.
Multiple requests with invalid payload lengths could lead to a denial
of service.

For Debian 9 stretch, these problems have been fixed in version
8.5.54-0+deb9u3.

We recommend that you upgrade your tomcat8 packages.

For the detailed security status of tomcat8 please refer to its
security tracker page at:
https://security-tracker.debian.org/tracker/tomcat8

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/msg00017.html");
  script_set_attribute(attribute:"see_also", value:"https://packages.debian.org/source/stretch/tomcat8");
  script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/source-package/tomcat8");
  script_set_attribute(attribute:"solution", value:
"Upgrade the affected packages.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:P");
  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-2020-13935");

  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:"2020/07/14");
  script_set_attribute(attribute:"patch_publication_date", value:"2020/07/22");
  script_set_attribute(attribute:"plugin_publication_date", value:"2020/07/23");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libservlet3.1-java");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libservlet3.1-java-doc");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libtomcat8-embed-java");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libtomcat8-java");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:tomcat8");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:tomcat8-admin");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:tomcat8-common");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:tomcat8-docs");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:tomcat8-examples");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:tomcat8-user");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:debian:debian_linux:9.0");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_set_attribute(attribute:"stig_severity", value:"I");
  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:"libservlet3.1-java", reference:"8.5.54-0+deb9u3")) flag++;
if (deb_check(release:"9.0", prefix:"libservlet3.1-java-doc", reference:"8.5.54-0+deb9u3")) flag++;
if (deb_check(release:"9.0", prefix:"libtomcat8-embed-java", reference:"8.5.54-0+deb9u3")) flag++;
if (deb_check(release:"9.0", prefix:"libtomcat8-java", reference:"8.5.54-0+deb9u3")) flag++;
if (deb_check(release:"9.0", prefix:"tomcat8", reference:"8.5.54-0+deb9u3")) flag++;
if (deb_check(release:"9.0", prefix:"tomcat8-admin", reference:"8.5.54-0+deb9u3")) flag++;
if (deb_check(release:"9.0", prefix:"tomcat8-common", reference:"8.5.54-0+deb9u3")) flag++;
if (deb_check(release:"9.0", prefix:"tomcat8-docs", reference:"8.5.54-0+deb9u3")) flag++;
if (deb_check(release:"9.0", prefix:"tomcat8-examples", reference:"8.5.54-0+deb9u3")) flag++;
if (deb_check(release:"9.0", prefix:"tomcat8-user", reference:"8.5.54-0+deb9u3")) 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");