Vulnerabilities > CVE-2002-0818 - Buffer Overflow vulnerability in Andrew Bishop WWWOFFLE Negative Content-Length

#%NASL_MIN_LEVEL 80502

#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were  
# extracted from Debian Security Advisory DSA-144. The text 
# itself is copyright (C) Software in the Public Interest, Inc.
#

include("compat.inc");

if (description)
{
  script_id(14981);
  script_version("1.17");
  script_cvs_date("Date: 2019/08/02 13:32:16");

  script_cve_id("CVE-2002-0818");
  script_bugtraq_id(5260);
  script_xref(name:"DSA", value:"144");

  script_name(english:"Debian DSA-144-1 : wwwoffle - improper input handling");
  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:
"A problem with wwwoffle has been discovered. The web proxy didn't
handle input data with negative Content-Length settings properly which
causes the processing child to crash. It is at this time not obvious
how this can lead to an exploitable vulnerability; however, it's
better to be safe than sorry, so here's an update.

Additionally, in the woody version empty passwords will be treated as
wrong when trying to authenticate. In the woody version we also
replaced CanonicaliseHost() with the latest routine from 2.7d, offered
by upstream. This stops bad IPv6 format IP addresses in URLs from
causing problems (memory overwriting, potential exploits)."
  );
  script_set_attribute(
    attribute:"see_also",
    value:"http://www.debian.org/security/2002/dsa-144"
  );
  script_set_attribute(
    attribute:"solution", 
    value:
"Upgrade the wwwoffle packages.

This problem has been fixed in version 2.5c-10.4 for the old stable
distribution (potato), in version 2.7a-1.2 for the current stable
distribution (woody) and in version 2.7d-1 for the unstable
distribution (sid)."
  );
  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:U/RL:OF/RC:C");
  script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"false");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:wwwoffle");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:debian:debian_linux:2.2");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:debian:debian_linux:3.0");

  script_set_attribute(attribute:"patch_publication_date", value:"2002/08/06");
  script_set_attribute(attribute:"plugin_publication_date", value:"2004/09/29");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2004-2019 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:"2.2", prefix:"wwwoffle", reference:"2.5c-10.4")) flag++;
if (deb_check(release:"3.0", prefix:"wwwoffle", reference:"2.7a-1.2")) 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");