Vulnerabilities > CVE-2004-0435 - Buffer Cache Implementation vulnerability in FreeBSD Msync(2) System Call

047910
CVSS 3.6 - LOW
Attack vector
LOCAL
Attack complexity
LOW
Privileges required
NONE
Confidentiality impact
NONE
Integrity impact
PARTIAL
Availability impact
PARTIAL
local
low complexity
freebsd
nessus
NVD
Published: 2004-08-18
Updated: 2017-07-11

Summary

Certain "programming errors" in the msync system call for FreeBSD 5.2.1 and earlier, and 4.10 and earlier, do not properly handle the MS_INVALIDATE operation, which leads to cache consistency problems that allow a local user to prevent certain changes to files from being committed to disk.

Vulnerable Configurations

Part Description Count
OS
Freebsd
14

Nessus

NASL familyFreeBSD Local Security Checks
NASL idFREEBSD_BUFFER_CACHE.NASL
descriptionThe remote host is running a version of FreeBSD which contains a programming error in the msync(2) system call which may let a local user with read access to a given file to forbid any change to this file to be written to disk.
last seen2020-06-01
modified2020-06-02
plugin id12527
published2004-07-06
reporterThis script is Copyright (C) 2004-2010 Tenable Network Security, Inc.
sourcehttps://www.tenable.com/plugins/nessus/12527
titleFreeBSD : SA-04:11.msync
code
#
# (C) Tenable Network Security, Inc.
#
#

if ( ! defined_func("bn_random") ) exit(0);

include("compat.inc");

if(description)
{
 script_id(12527);
 script_bugtraq_id(10416);
 script_version ("$Revision: 1.11 $");
 script_cve_id("CVE-2004-0435");
 name["english"] = "FreeBSD : SA-04:11.msync";
 
 script_name(english:name["english"]);
 
 script_set_attribute(attribute:"synopsis", value:
"The remote device is missing a vendor-supplied security patch" );
 script_set_attribute(attribute:"description", value:
"The remote host is running a version of FreeBSD which contains a
programming error in the msync(2) system call which may let a local user with
read access to a given file to forbid any change to this file to be written
to disk." );
 script_set_attribute(attribute:"solution", value:
"http://www.vuxml.org/freebsd/1db1ed59-af07-11d8-acb9-000d610a3b12.html" );
 script_set_cvss_base_vector("CVSS2#AV:L/AC:L/Au:N/C:N/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_publication_date", value: "2004/07/06");
 script_cvs_date("$Date: 2010/10/06 01:41:53 $");
 script_end_attributes();

 
 summary["english"] = "Check for the version of FreeBSD";
 script_summary(english:summary["english"]);
 
 script_category(ACT_GATHER_INFO);
 
 script_copyright(english:"This script is Copyright (C) 2004-2010 Tenable Network Security, Inc.");
 family["english"] = "FreeBSD Local Security Checks";
 script_family(english:family["english"]);
 
 script_dependencies("ssh_get_info.nasl");
 script_require_keys("Host/FreeBSD/pkg_info");
 exit(0);
}



include("freebsd_package.inc");

port = 0;

pkgs = get_kb_item("Host/FreeBSD/pkg_info");

package = get_kb_item("Host/FreeBSD/release");


if ( egrep(pattern:"FreeBSD-5\.", string:package) )
{
 if ( pkg_cmp(pkg:package, reference:"FreeBSD-5.2_8") < 0 )
 {
  security_note(port);
  exit(0);
 }
}


if ( egrep(pattern:"FreeBSD-4\.9", string:package) )
{
 if ( pkg_cmp(pkg:package, reference:"FreeBSD-4.9_9") < 0 )
 {
  security_note(port);
  exit(0);
 }
}

if ( egrep(pattern:"FreeBSD-4\.[0-8]([^0-9]|$)", string:package) )
{
 if ( pkg_cmp(pkg:package, reference:"FreeBSD-4.8_22") < 0 )
 {
  security_note(port);
  exit(0);
 }
}

References