Debian DSA-874-1 : lynx - buffer overflow

2006-10-14T00:00:00
ID DEBIAN_DSA-874.NASL
Type nessus
Reporter Tenable
Modified 2018-08-09T00:00:00

Description

Ulf Harnhammar discovered a buffer overflow in lynx, a text-mode browser for the WWW that can be remotely exploited. During the handling of Asian characters when connecting to an NNTP server lynx can be tricked to write past the boundary of a buffer which can lead to the execution of arbitrary code.

                                        
                                            #%NASL_MIN_LEVEL 70103

#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were  
# extracted from Debian Security Advisory DSA-874. The text 
# itself is copyright (C) Software in the Public Interest, Inc.
#

include("compat.inc");

if (description)
{
  script_id(22740);
  script_version("1.15");
  script_cvs_date("Date: 2018/08/09 17:06:36");

  script_cve_id("CVE-2005-3120");
  script_xref(name:"DSA", value:"874");

  script_name(english:"Debian DSA-874-1 : lynx - buffer overflow");
  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:
"Ulf Harnhammar discovered a buffer overflow in lynx, a text-mode
browser for the WWW that can be remotely exploited. During the
handling of Asian characters when connecting to an NNTP server lynx
can be tricked to write past the boundary of a buffer which can lead
to the execution of arbitrary code."
  );
  script_set_attribute(
    attribute:"see_also",
    value:"http://www.debian.org/security/2005/dsa-874"
  );
  script_set_attribute(
    attribute:"solution", 
    value:
"Upgrade the lynx package.

For the old stable distribution (woody) this problem has been fixed in
version 2.8.4.1b-3.3.

For the stable distribution (sarge) this problem has been fixed in
version 2.8.5-2sarge1."
  );
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:lynx");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:debian:debian_linux:3.0");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:debian:debian_linux:3.1");

  script_set_attribute(attribute:"patch_publication_date", value:"2005/10/27");
  script_set_attribute(attribute:"plugin_publication_date", value:"2006/10/14");
  script_set_attribute(attribute:"vuln_publication_date", value:"2005/10/17");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2006-2018 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:"lynx", reference:"2.8.4.1b-3.3")) flag++;
if (deb_check(release:"3.1", prefix:"lynx", reference:"2.8.5-2sarge1")) 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");