Debian DSA-392-1 : webfs - buffer overflows, file and directory exposure

#%NASL_MIN_LEVEL 70300

#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were  
# extracted from Debian Security Advisory DSA-392. The text 
# itself is copyright (C) Software in the Public Interest, Inc.
#

include('deprecated_nasl_level.inc');
include('compat.inc');

if (description)
{
  script_id(15229);
  script_version("1.25");
  script_set_attribute(attribute:"plugin_modification_date", value:"2021/01/04");

  script_cve_id("CVE-2003-0832", "CVE-2003-0833");
  script_bugtraq_id(8724, 8726);
  script_xref(name:"DSA", value:"392");

  script_name(english:"Debian DSA-392-1 : webfs - buffer overflows, file and directory exposure");
  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:
"Jens Steube reported two vulnerabilities in webfs, a lightweight HTTP
server for static content.

 CAN-2003-0832 - When virtual hosting is enabled, a remote client
 could specify '..' as the hostname in a request, allowing retrieval
 of directory listings or files above the document root.

 CAN-2003-0833 - A long pathname could overflow a buffer allocated on
 the stack, allowing execution of arbitrary code. In order to exploit
 this vulnerability, it would be necessary to be able to create
 directories on the server in a location which could be accessed by
 the web server. In conjunction with CAN-2003-0832, this could be a
 world-writable directory such as /var/tmp."
  );
  script_set_attribute(
    attribute:"see_also",
    value:"http://www.debian.org/security/2003/dsa-392"
  );
  script_set_attribute(
    attribute:"solution", 
    value:
"For the current stable distribution (woody) these problems have been
fixed in version 1.17.2.

We recommend that you update your webfs package."
  );
  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_attribute(attribute:"exploitability_ease", value:"Exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"true");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:webfs");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:debian:debian_linux:3.0");

  script_set_attribute(attribute:"patch_publication_date", value:"2003/09/29");
  script_set_attribute(attribute:"plugin_publication_date", value:"2004/09/29");
  script_set_attribute(attribute:"vuln_publication_date", value:"2003/09/30");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2004-2021 Tenable Network Security, Inc.");
  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:"3.0", prefix:"webfs", reference:"1.17.2")) 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");