OpenVAS Scanner Symlink Attack Local Privilege Escalation Vulnerability

# SPDX-FileCopyrightText: 2012 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("1.3.6.1.4.1.25623.1.0.801979");
  script_version("2024-11-22T15:40:47+0000");
  script_cve_id("CVE-2011-3351");
  script_tag(name:"cvss_base", value:"6.6");
  script_tag(name:"cvss_base_vector", value:"AV:L/AC:L/Au:N/C:N/I:C/A:C");
  script_tag(name:"last_modification", value:"2024-11-22 15:40:47 +0000 (Fri, 22 Nov 2024)");
  script_tag(name:"severity_vector", value:"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H");
  script_tag(name:"severity_origin", value:"NVD");
  script_tag(name:"severity_date", value:"2019-12-11 18:39:00 +0000 (Wed, 11 Dec 2019)");
  script_tag(name:"creation_date", value:"2012-01-10 17:29:46 +0530 (Tue, 10 Jan 2012)");
  script_name("OpenVAS Scanner Symlink Attack Local Privilege Escalation Vulnerability");
  script_xref(name:"URL", value:"http://seclists.org/oss-sec/2011/q3/432");
  script_xref(name:"URL", value:"http://www.securityfocus.com/bid/49460");
  script_xref(name:"URL", value:"http://www.securelist.com/en/advisories/45836");
  script_xref(name:"URL", value:"http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=641327");

  script_tag(name:"qod_type", value:"executable_version");
  script_category(ACT_GATHER_INFO);
  script_copyright("Copyright (C) 2012 Greenbone AG");
  script_family("Privilege escalation");
  script_tag(name:"solution_type", value:"VendorFix");
  script_dependencies("gather-package-list.nasl");
  script_mandatory_keys("login/SSH/success");
  script_exclude_keys("ssh/no_linux_shell");

  script_tag(name:"impact", value:"Successful exploitation allows local user on a client or server system can
  gain access to the administrator or root account thus taking full control of the system.");

  script_tag(name:"affected", value:"OpenVAS Project OpenVAS Scanner 3.2.4.");

  script_tag(name:"solution", value:"Upgrade to OpenVAS Scanner 4 or later.");

  script_tag(name:"summary", value:"OpenVAS Scanner is prone to a privilege escalation vulnerability.");

  script_tag(name:"insight", value:"The flaw is due to the application passing a predictable temporary
  filename to the '-r' parameter of the ovaldi application, which can be
  exploited to overwrite arbitrary files via symlink attacks.

  NOTE: This vulnerability exists when ovaldi support enabled.");

  exit(0);
}

include("ssh_func.inc");
include("version_func.inc");

sock = ssh_login_or_reuse_connection();
if(!sock)
  exit(0);

foreach command (make_list("openvasd"))
{
  openvasName = ssh_find_file(file_name:"/" + command + "$", useregex:TRUE, sock:sock);

  foreach binaryName (openvasName)
  {
    binaryName = chomp(binaryName);
    if(!binaryName)
      continue;

    openvasVer = ssh_get_bin_version(full_prog_name:binaryName, version_argv:"--version", ver_pattern:"OpenVAS.(Scanner)?.?([0-9.]+)", sock:sock);

    if(openvasVer[2])
    {
      if(version_is_less_equal(version:openvasVer[2], test_version:"3.2.4"))
      {
        security_message( port: 0, data: "The target host was found to be vulnerable" );
        close(sock);
        exit(0);
      }
    }
  }
}
close(sock);