Vulnerabilities > CVE-2018-8004 - HTTP Request Smuggling vulnerability in multiple products

#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were  
# extracted from Debian Security Advisory DSA-4282. The text 
# itself is copyright (C) Software in the Public Interest, Inc.
#

include("compat.inc");

if (description)
{
  script_id(112232);
  script_version("1.5");
  script_cvs_date("Date: 2018/11/13 12:30:47");

  script_cve_id("CVE-2018-1318", "CVE-2018-8004", "CVE-2018-8005", "CVE-2018-8040");
  script_xref(name:"DSA", value:"4282");

  script_name(english:"Debian DSA-4282-1 : trafficserver - security update");
  script_summary(english:"Checks dpkg output for the updated package");

  script_set_attribute(
    attribute:"synopsis", 
    value:"The remote Debian host is missing a security-related update."
  );
  script_set_attribute(
    attribute:"description", 
    value:
"Several vulnerabilities were discovered in Apache Traffic Server, a
reverse and forward proxy server, which could result in denial of
service, cache poisoning or information disclosure."
  );
  # https://security-tracker.debian.org/tracker/source-package/trafficserver
  script_set_attribute(
    attribute:"see_also",
    value:"http://www.nessus.org/u?20613153"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://packages.debian.org/source/stretch/trafficserver"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://www.debian.org/security/2018/dsa-4282"
  );
  script_set_attribute(
    attribute:"solution", 
    value:
"Upgrade the trafficserver packages.

For the stable distribution (stretch), these problems have been fixed
in version 7.0.0-6+deb9u2."
  );
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:P");
  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_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:trafficserver");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:debian:debian_linux:9.0");

  script_set_attribute(attribute:"patch_publication_date", value:"2018/08/31");
  script_set_attribute(attribute:"plugin_publication_date", value:"2018/09/04");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2018 and is owned by Tenable, Inc. or an Affiliate thereof.");
  script_family(english:"Debian Local Security Checks");

  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:"trafficserver", reference:"7.0.0-6+deb9u2")) flag++;
if (deb_check(release:"9.0", prefix:"trafficserver-dev", reference:"7.0.0-6+deb9u2")) flag++;
if (deb_check(release:"9.0", prefix:"trafficserver-experimental-plugins", reference:"7.0.0-6+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");

#
# (C) Tenable Network Security, Inc.
#

include('compat.inc');

if (description)
{
  script_id(136931);
  script_version("1.2");
  script_set_attribute(attribute:"plugin_modification_date", value:"2020/07/01");
  script_cve_id("CVE-2018-8004");

  script_name(english:"Apache Traffic Server - HTTP Smuggling and Cache poisoning");
  script_set_attribute(attribute:"synopsis", value:
"The remote caching server is affected by a HTTP Smuggling and Cache Poisoning vulnerability.");
  script_set_attribute(attribute:"description", value:
"According to the result of a remote check, the target Apache Traffic Server does not have a patch applied to mitigate HTTP Smuggling and HTTP cache poisong which was put in place in versions greater than 6.2.3 and 7.1.4. A remote unauthenticated attacker could exploit this to gain access to backend resources that they would otherwise not have access to.
");

  script_set_attribute(attribute:"see_also", value:"https://nvd.nist.gov/vuln/detail/CVE-2018-8004");
  script_set_attribute(attribute:"solution", value:
"Upgrade to Apache Traffic Server version 6.x users should upgrade to 6.2.3 or later. 7.x versions should upgrade to
7.1.4 or later.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:S/C:N/I:P/A:N");
  script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2018-8004");

  script_set_attribute(attribute:"vuln_publication_date", value:"2018/08/28");
  script_set_attribute(attribute:"patch_publication_date", value:"2018/02/28");
  script_set_attribute(attribute:"plugin_publication_date", value:"2020/05/28");

  script_set_attribute(attribute:"plugin_type", value:"remote");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:apache:traffic_server");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_family(english:"Web Servers");

  script_copyright(english:"This script is Copyright (C) 2020 and is owned by Tenable, Inc. or an Affiliate thereof.");

  script_dependencies("apache_traffic_server_version.nasl");
  script_require_keys("www/apache_traffic_server");

  exit(0); 
}
include('debug.inc');
include('http.inc');

port = get_http_port();
version = get_kb_item('www/' + port + '/apache_traffic_server/version');
if (!version) version = 'unknown';

soc = open_sock_tcp(port);
if (!soc) audit(AUDIT_SOCK_FAIL, port);

req = 'GET /something.html HTTP/1.1\r\n
\r\n
GET /something_else.html HTTP/1.1\r\n
\r\n';

send(socket:soc, data:req);
response_data = recv(socket:soc, length:2048);
dbg::log(src:SCRIPT_NAME,msg:req);
if (response_data) {
  count = 0;
  foreach line (split(response_data)) {
    if (egrep(pattern:"HTTP/1.[0-2] 400", string:line)) {
      count += 1;
    }
  }
  if (count == 2) {
    vuln = TRUE;
  }
  else {
    dbg::log(src:SCRIPT_NAME,msg:'Only one request processed, target is patched.');
    vuln = FALSE;
  }
}
else {
  dbg::log(src:SCRIPT_NAME,msg:'No response recieved from target.');
  vuln = FALSE;
}

if (vuln == TRUE) {
  if (version =~ "^7.*") fixed = '7.1.4';
  else if (version =~ "^6.*") fixed = '6.2.3';
  else fixed = '6.2.3 or 7.1.4';
  report =
    '\n  Installed version      : ' + version +
    '\n  Fixed version          : ' + fixed +
    '\n  vulnerable version was installed.\n';
  security_report_v4(port:port, severity:SECURITY_WARNING, extra:report);
}
else if (vuln == 'FALSE') {
  audit(AUDIT_LISTEN_NOT_VULN, 'Apache Traffic Server', port);
}