Vulnerabilities > CVE-2005-4802 - Local Security vulnerability in Flexbackup

047910
CVSS 4.6 - MEDIUM
Attack vector
LOCAL
Attack complexity
LOW
Privileges required
NONE
Confidentiality impact
PARTIAL
Integrity impact
PARTIAL
Availability impact
PARTIAL
local
low complexity
flexbackup
nessus
NVD
Published: 2005-12-31
Updated: 2016-10-18

Summary

Flexbackup 1.2.1 and earlier allows local users to overwrite files and execute code via a symlink attack on temporary files. NOTE: the raw source referenced an incorrect candidate number; this is the correct number to use.

Vulnerable Configurations

Part Description Count
Application
Flexbackup
1

Nessus

NASL familyDebian Local Security Checks
NASL idDEBIAN_DSA-1216.NASL
descriptionEric Romang discovered that the flexbackup backup tool creates temporary files in an insecure manner, which allows denial of service through a symlink attack.
last seen2020-06-01
modified2020-06-02
plugin id23702
published2006-11-22
reporterThis script is Copyright (C) 2006-2019 Tenable Network Security, Inc.
sourcehttps://www.tenable.com/plugins/nessus/23702
titleDebian DSA-1216-1 : flexbackup - insecure temporary file
code
#%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-1216. The text 
# itself is copyright (C) Software in the Public Interest, Inc.
#

include("compat.inc");

if (description)
{
  script_id(23702);
  script_version("1.14");
  script_cvs_date("Date: 2019/08/02 13:32:20");

  script_cve_id("CVE-2005-4802");
  script_xref(name:"DSA", value:"1216");

  script_name(english:"Debian DSA-1216-1 : flexbackup - insecure temporary file");
  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:
"Eric Romang discovered that the flexbackup backup tool creates
temporary files in an insecure manner, which allows denial of service
through a symlink attack."
  );
  script_set_attribute(
    attribute:"see_also",
    value:"http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=334350"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"http://www.debian.org/security/2006/dsa-1216"
  );
  script_set_attribute(
    attribute:"solution", 
    value:
"Upgrade the flexbackup package.

For the stable distribution (sarge) this problem has been fixed in
version 1.2.1-2sarge1.

For the upcoming stable distribution (etch) this problem has been
fixed in version 1.2.1-3."
  );
  script_set_cvss_base_vector("CVSS2#AV:L/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:flexbackup");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:debian:debian_linux:3.1");

  script_set_attribute(attribute:"patch_publication_date", value:"2006/11/20");
  script_set_attribute(attribute:"plugin_publication_date", value:"2006/11/22");
  script_set_attribute(attribute:"vuln_publication_date", value:"2005/10/15");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2006-2019 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:"3.1", prefix:"flexbackup", reference:"1.2.1-2sarge1")) 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");

References