Vulnerabilities > CVE-2014-3711 - Resource Management Errors vulnerability in Freebsd

047910
CVSS 5.0 - MEDIUM
Attack vector
NETWORK
Attack complexity
LOW
Privileges required
NONE
Confidentiality impact
NONE
Integrity impact
NONE
Availability impact
PARTIAL
network
low complexity
freebsd
CWE-399
nessus

Summary

namei in FreeBSD 9.1 through 10.1-RC2 allows remote attackers to cause a denial of service (memory exhaustion) via vectors that trigger a sandboxed process to look up a large number of nonexistent path names.

Common Weakness Enumeration (CWE)

Nessus

  • NASL familyFreeBSD Local Security Checks
    NASL idFREEBSD_PKG_73964EAC600711E6A6C314DAE9D210B8.NASL
    descriptionThe namei facility will leak a small amount of kernel memory every time a sandboxed process looks up a nonexistent path name. Impact : A remote attacker that can cause a sandboxed process (for instance, a web server) to look up a large number of nonexistent path names can cause memory exhaustion.
    last seen2020-06-01
    modified2020-06-02
    plugin id92910
    published2016-08-12
    reporterThis script is Copyright (C) 2016-2018 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/92910
    titleFreeBSD : FreeBSD -- memory leak in sandboxed namei lookup (73964eac-6007-11e6-a6c3-14dae9d210b8)
    code
    #
    # (C) Tenable Network Security, Inc.
    #
    # The descriptive text and package checks in this plugin were  
    # extracted from the FreeBSD VuXML database :
    #
    # Copyright 2003-2018 Jacques Vidrine and contributors
    #
    # Redistribution and use in source (VuXML) and 'compiled' forms (SGML,
    # HTML, PDF, PostScript, RTF and so forth) with or without modification,
    # are permitted provided that the following conditions are met:
    # 1. Redistributions of source code (VuXML) must retain the above
    #    copyright notice, this list of conditions and the following
    #    disclaimer as the first lines of this file unmodified.
    # 2. Redistributions in compiled form (transformed to other DTDs,
    #    published online in any format, converted to PDF, PostScript,
    #    RTF and other formats) must reproduce the above copyright
    #    notice, this list of conditions and the following disclaimer
    #    in the documentation and/or other materials provided with the
    #    distribution.
    # 
    # THIS DOCUMENTATION IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS "AS IS"
    # AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
    # THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
    # PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS
    # BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY,
    # OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
    # OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
    # BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
    # WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
    # OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS DOCUMENTATION,
    # EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
    #
    
    include("compat.inc");
    
    if (description)
    {
      script_id(92910);
      script_version("2.4");
      script_cvs_date("Date: 2018/12/07  9:46:53");
    
      script_cve_id("CVE-2014-3711");
      script_bugtraq_id(70692);
      script_xref(name:"FreeBSD", value:"SA-14:22.namei");
    
      script_name(english:"FreeBSD : FreeBSD -- memory leak in sandboxed namei lookup (73964eac-6007-11e6-a6c3-14dae9d210b8)");
      script_summary(english:"Checks for updated packages in pkg_info output");
    
      script_set_attribute(
        attribute:"synopsis", 
        value:
    "The remote FreeBSD host is missing one or more security-related
    updates."
      );
      script_set_attribute(
        attribute:"description", 
        value:
    "The namei facility will leak a small amount of kernel memory every
    time a sandboxed process looks up a nonexistent path name. Impact : A
    remote attacker that can cause a sandboxed process (for instance, a
    web server) to look up a large number of nonexistent path names can
    cause memory exhaustion."
      );
      # https://vuxml.freebsd.org/freebsd/73964eac-6007-11e6-a6c3-14dae9d210b8.html
      script_set_attribute(
        attribute:"see_also",
        value:"http://www.nessus.org/u?c0c1740c"
      );
      script_set_attribute(attribute:"solution", value:"Update the affected packages.");
      script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:N/I:N/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:freebsd:freebsd:FreeBSD");
      script_set_attribute(attribute:"cpe", value:"cpe:/o:freebsd:freebsd");
    
      script_set_attribute(attribute:"vuln_publication_date", value:"2014/10/21");
      script_set_attribute(attribute:"patch_publication_date", value:"2016/08/11");
      script_set_attribute(attribute:"plugin_publication_date", value:"2016/08/12");
      script_end_attributes();
    
      script_category(ACT_GATHER_INFO);
      script_copyright(english:"This script is Copyright (C) 2016-2018 and is owned by Tenable, Inc. or an Affiliate thereof.");
      script_family(english:"FreeBSD Local Security Checks");
    
      script_dependencies("ssh_get_info.nasl");
      script_require_keys("Host/local_checks_enabled", "Host/FreeBSD/release", "Host/FreeBSD/pkg_info", "Settings/ParanoidReport");
    
      exit(0);
    }
    
    
    include("audit.inc");
    include("freebsd_package.inc");
    
    
    if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
    if (!get_kb_item("Host/FreeBSD/release")) audit(AUDIT_OS_NOT, "FreeBSD");
    if (!get_kb_item("Host/FreeBSD/pkg_info")) audit(AUDIT_PACKAGE_LIST_MISSING);
    
    
    if (report_paranoia < 2) audit(AUDIT_PARANOID);
    
    flag = 0;
    
    if (pkg_test(save_report:TRUE, pkg:"FreeBSD>=10.0<10.0_10")) flag++;
    if (pkg_test(save_report:TRUE, pkg:"FreeBSD>=9.3<9.3_3")) flag++;
    if (pkg_test(save_report:TRUE, pkg:"FreeBSD>=9.2<9.2_13")) flag++;
    if (pkg_test(save_report:TRUE, pkg:"FreeBSD>=9.1<9.1_20")) flag++;
    
    if (flag)
    {
      if (report_verbosity > 0) security_warning(port:0, extra:pkg_report_get());
      else security_warning(0);
      exit(0);
    }
    else audit(AUDIT_HOST_NOT, "affected");
    
  • NASL familyDebian Local Security Checks
    NASL idDEBIAN_DSA-3070.NASL
    descriptionSeveral vulnerabilities have been discovered in the FreeBSD kernel that may lead to a denial of service or information disclosure. - CVE-2014-3711 Denial of service through memory leak in sandboxed namei lookups. - CVE-2014-3952 Kernel memory disclosure in sockbuf control messages. - CVE-2014-3953 Kernel memory disclosure in SCTP. This update disables SCTP, since the userspace tools shipped in Wheezy didn
    last seen2020-03-17
    modified2014-11-10
    plugin id79066
    published2014-11-10
    reporterThis script is Copyright (C) 2014-2020 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/79066
    titleDebian DSA-3070-1 : kfreebsd-9 - security update