VMware Open Virtual Machine Tools File Corruption Vulnerability

# SPDX-FileCopyrightText: 2011 Greenbone AG
# Some text descriptions might be excerpted from (a) referenced
# source(s), and are Copyright (C) by the respective right holder(s).
#
# SPDX-License-Identifier: GPL-2.0-only

if(description)
{
  script_oid("1.3.6.1.4.1.25623.1.0.801917");
  script_version("2023-07-14T16:09:26+0000");
  script_tag(name:"last_modification", value:"2023-07-14 16:09:26 +0000 (Fri, 14 Jul 2023)");
  script_tag(name:"creation_date", value:"2011-04-13 15:50:09 +0200 (Wed, 13 Apr 2011)");
  script_cve_id("CVE-2011-1681");
  script_tag(name:"cvss_base", value:"3.3");
  script_tag(name:"cvss_base_vector", value:"AV:L/AC:M/Au:N/C:P/I:P/A:N");
  script_name("VMware Open Virtual Machine Tools File Corruption Vulnerability");
  script_xref(name:"URL", value:"http://openwall.com/lists/oss-security/2011/03/31/4");
  script_xref(name:"URL", value:"http://openwall.com/lists/oss-security/2011/03/22/6");
  script_xref(name:"URL", value:"http://openwall.com/lists/oss-security/2011/03/05/7");
  script_xref(name:"URL", value:"http://openwall.com/lists/oss-security/2011/03/04/10");

  script_tag(name:"qod_type", value:"executable_version");
  script_category(ACT_GATHER_INFO);
  script_copyright("Copyright (C) 2011 Greenbone AG");
  script_family("General");
  script_dependencies("gb_vmware_ovm_tools_detect_lin.nasl");
  script_mandatory_keys("VMware/OVM/Tools/Ver");
  script_tag(name:"impact", value:"Successful exploitation will allow local users to trigger
corruption of this file via a process with a small RLIMIT_FSIZE value.");
  script_tag(name:"affected", value:"VMware Open Virtual Machine Tools version 8.4.2-261024 and
prior.");
  script_tag(name:"insight", value:"The flaw is due to an error in 'vmware-hgfsmounter', which
attempts to append to the '/etc/mtab' file without first checking whether
resource limits would interfere.");
  script_tag(name:"solution", value:"Upgrade to version 2011.05.27 or later.");
  script_tag(name:"solution_type", value:"VendorFix");
  script_tag(name:"summary", value:"VMware Open Virtual Machine Tools is prone to file corruption vulnerability.");
  script_xref(name:"URL", value:"http://sourceforge.net/projects/open-vm-tools/files/open-vm-tools");
  exit(0);
}


include("version_func.inc");

vmVer = get_kb_item("VMware/OVM/Tools/Ver");
if(!vmVer){
  exit(0);
}

## match the version without build
version = eregmatch(pattern:"([0-9]+\.[0-9]+\.[0-9]+)", string:vmVer);
if(version[1])
{
  buildVer = eregmatch(pattern:"build ([0-9]+)", string:vmVer);
  if(buildVer[1]){
    ver = version[1] +"." + buildVer[1];
  }
  else {
    ver = version[1];
  }

  if(version_is_less_equal(version:ver, test_version:"8.4.2.261024")){
    security_message( port: 0, data: "The target host was found to be vulnerable" );
  }
}