Vulnerabilities > CVE-2013-3950 - Improper Restriction of Operations Within the Bounds of A Memory Buffer vulnerability in Apple Iphone OS

047910
CVSS 5.0 - MEDIUM
Attack vector
NETWORK
Attack complexity
LOW
Privileges required
NONE
Confidentiality impact
NONE
Integrity impact
PARTIAL
Availability impact
NONE
network
low complexity
apple
CWE-119
nessus

Summary

Stack-based buffer overflow in the openSharedCacheFile function in dyld.cpp in dyld in Apple iOS 5.1.x and 6.x through 6.1.3 makes it easier for attackers to conduct untethering attacks via a long string in the DYLD_SHARED_CACHE_DIR environment variable.

Common Attack Pattern Enumeration and Classification (CAPEC)

  • Buffer Overflow via Environment Variables
    This attack pattern involves causing a buffer overflow through manipulation of environment variables. Once the attacker finds that they can modify an environment variable, they may try to overflow associated buffers. This attack leverages implicit trust often placed in environment variables.
  • Overflow Buffers
    Buffer Overflow attacks target improper or missing bounds checking on buffer operations, typically triggered by input injected by an attacker. As a consequence, an attacker is able to write past the boundaries of allocated buffer regions in memory, causing a program crash or potentially redirection of execution as per the attackers' choice.
  • Client-side Injection-induced Buffer Overflow
    This type of attack exploits a buffer overflow vulnerability in targeted client software through injection of malicious content from a custom-built hostile service.
  • Filter Failure through Buffer Overflow
    In this attack, the idea is to cause an active filter to fail by causing an oversized transaction. An attacker may try to feed overly long input strings to the program in an attempt to overwhelm the filter (by causing a buffer overflow) and hoping that the filter does not fail securely (i.e. the user input is let into the system unfiltered).
  • MIME Conversion
    An attacker exploits a weakness in the MIME conversion routine to cause a buffer overflow and gain control over the mail server machine. The MIME system is designed to allow various different information formats to be interpreted and sent via e-mail. Attack points exist when data are converted to MIME compatible format and back.

Nessus

  • NASL familyMacOS X Local Security Checks
    NASL idMACOSX_10_9.NASL
    descriptionThe remote host is running a version of Mac OS X 10.x that is prior to version 10.9. The newer version contains multiple security-related fixes for the following components : - Application Firewall - App Sandbox - Bluetooth - CFNetwork - CFNetwork SSL - Console - CoreGraphics - curl - dyld - IOKitUser - IOSerialFamily - Kernel - Kext Management - LaunchServices - Libc - Mail Accounts - Mail Header Display - Mail Networking - OpenLDAP - perl - Power Management - python - ruby - Security - Security - Authorization - Security - Smart Card Services - Screen Lock - Screen Sharing Server - syslog - USB
    last seen2020-06-01
    modified2020-06-02
    plugin id70561
    published2013-10-23
    reporterThis script is Copyright (C) 2013-2018 Tenable Network Security, Inc.
    sourcehttps://www.tenable.com/plugins/nessus/70561
    titleMac OS X 10.x < 10.9 Multiple Vulnerabilities (BEAST)
    code
    #
    # (C) Tenable Network Security, Inc.
    #
    
    include("compat.inc");
    
    if (description)
    {
      script_id(70561);
      script_version("1.11");
      script_cvs_date("Date: 2018/07/14  1:59:36");
    
      script_cve_id(
        "CVE-2011-2391",
        "CVE-2011-3389",
        "CVE-2011-3427",
        "CVE-2011-4944",
        "CVE-2012-0845",
        "CVE-2012-0876",
        "CVE-2012-1150",
        "CVE-2013-0249",
        "CVE-2013-1667",
        "CVE-2013-1944",
        "CVE-2013-3950",
        "CVE-2013-3954",
        "CVE-2013-4073",
        "CVE-2013-5135",
        "CVE-2013-5138",
        "CVE-2013-5139",
        "CVE-2013-5141",
        "CVE-2013-5142",
        "CVE-2013-5145",
        "CVE-2013-5165",
        "CVE-2013-5166",
        "CVE-2013-5167",
        "CVE-2013-5168",
        "CVE-2013-5169",
        "CVE-2013-5170",
        "CVE-2013-5171",
        "CVE-2013-5172",
        "CVE-2013-5173",
        "CVE-2013-5174",
        "CVE-2013-5175",
        "CVE-2013-5176",
        "CVE-2013-5177",
        "CVE-2013-5178",
        "CVE-2013-5179",
        "CVE-2013-5180",
        "CVE-2013-5181",
        "CVE-2013-5182",
        "CVE-2013-5183",
        "CVE-2013-5184",
        "CVE-2013-5185",
        "CVE-2013-5186",
        "CVE-2013-5187",
        "CVE-2013-5188",
        "CVE-2013-5189",
        "CVE-2013-5190",
        "CVE-2013-5191",
        "CVE-2013-5192",
        "CVE-2013-5229"
      );
      script_bugtraq_id(
        49778,
        51239,
        51996,
        52379,
        52732,
        57842,
        58311,
        59058,
        60437,
        60444,
        60843,
        62520,
        62522,
        62523,
        62529,
        62531,
        62536,
        63284,
        63290,
        63311,
        63312,
        63313,
        63314,
        63316,
        63317,
        63319,
        63320,
        63321,
        63322,
        63329,
        63330,
        63331,
        63332,
        63335,
        63336,
        63339,
        63343,
        63344,
        63345,
        63346,
        63347,
        63348,
        63349,
        63350,
        63351,
        63352,
        63353
      );
      script_xref(name:"APPLE-SA", value:"APPLE-SA-2013-10-22-3");
      script_xref(name:"CERT", value:"864643");
    
      script_name(english:"Mac OS X 10.x < 10.9 Multiple Vulnerabilities (BEAST)");
      script_summary(english:"Check the version of Mac OS X.");
    
      script_set_attribute(
        attribute:"synopsis",
        value:
    "The remote host is missing a Mac OS X update that fixes multiple
    security vulnerabilities."
      );
      script_set_attribute(
        attribute:"description",
        value:
    "The remote host is running a version of Mac OS X 10.x that is prior
    to version 10.9. The newer version contains multiple security-related
    fixes for the following components :
    
      - Application Firewall
      - App Sandbox
      - Bluetooth
      - CFNetwork
      - CFNetwork SSL
      - Console
      - CoreGraphics
      - curl
      - dyld
      - IOKitUser
      - IOSerialFamily
      - Kernel
      - Kext Management
      - LaunchServices
      - Libc
      - Mail Accounts
      - Mail Header Display
      - Mail Networking
      - OpenLDAP
      - perl
      - Power Management
      - python
      - ruby
      - Security
      - Security - Authorization
      - Security - Smart Card Services
      - Screen Lock
      - Screen Sharing Server
      - syslog
      - USB"
      );
      script_set_attribute(attribute:"see_also", value:"http://support.apple.com/kb/HT6011");
      script_set_attribute(attribute:"see_also", value:"http://lists.apple.com/archives/security-announce/2013/Oct/msg00004.html");
      script_set_attribute(attribute:"see_also", value:"https://www.imperialviolet.org/2011/09/23/chromeandbeast.html");
      script_set_attribute(attribute:"see_also", value:"https://www.openssl.org/~bodo/tls-cbc.txt");
      script_set_attribute(attribute:"solution", value:"Upgrade to Mac OS X 10.9 or later.");
      script_set_cvss_base_vector("CVSS2#AV:N/AC:M/Au:N/C:C/I:C/A:C");
      script_set_cvss_temporal_vector("CVSS2#E:POC/RL:OF/RC:C");
      script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
      script_set_attribute(attribute:"exploit_available", value:"true");
    
      script_set_attribute(attribute:"vuln_publication_date", value:"2011/08/31");
      script_set_attribute(attribute:"patch_publication_date", value:"2013/10/22");
      script_set_attribute(attribute:"plugin_publication_date", value:"2013/10/23");
    
      script_set_attribute(attribute:"plugin_type", value:"combined");
      script_set_attribute(attribute:"cpe", value:"cpe:/o:apple:mac_os_x");
      script_set_attribute(attribute:"in_the_news", value:"true");
      script_end_attributes();
    
      script_category(ACT_GATHER_INFO);
      script_family(english:"MacOS X Local Security Checks");
    
      script_copyright(english:"This script is Copyright (C) 2013-2018 Tenable Network Security, Inc.");
    
      script_dependencies("ssh_get_info.nasl", "os_fingerprint.nasl");
      script_require_ports("Host/MacOSX/Version", "Host/OS");
    
      exit(0);
    }
    
    include("audit.inc");
    include("global_settings.inc");
    include("misc_func.inc");
    
    os = get_kb_item("Host/MacOSX/Version");
    if (!os)
    {
      os = get_kb_item_or_exit("Host/OS");
      if ("Mac OS X" >!< os) audit(AUDIT_OS_NOT, "Mac OS X");
    
      c = get_kb_item("Host/OS/Confidence");
      if (c <= 70) exit(1, "Can't determine the host's OS with sufficient confidence.");
    }
    if (!os) audit(AUDIT_OS_NOT, "Mac OS X");
    
    match = eregmatch(pattern:"Mac OS X (10\.[0-9.]+)", string:os);
    if (!isnull(match))
    {
      version = match[1];
      fixed_version = "10.9";
    
      if (ver_compare(ver:version, fix:fixed_version, strict:FALSE) == -1)
      {
        if (report_verbosity > 0)
        {
          report = '\n  Installed version : ' + version +
                   '\n  Fixed version     : ' + fixed_version +
                   '\n';
          security_hole(port:0, extra:report);
        }
        else security_hole(0);
        exit(0);
      }
    }
    
    exit(0, "The host is not affected as it is running "+os+".");
    
  • NASL familyMisc.
    NASL idAPPLETV_6_0.NASL
    descriptionAccording to its banner, the remote Apple TV 2nd generation or later device is prior to 6.0. It is, therefore, reportedly affected by multiple vulnerabilities, the most serious issues of which could result in arbitrary code execution.
    last seen2020-06-01
    modified2020-06-02
    plugin id70257
    published2013-10-01
    reporterThis script is Copyright (C) 2013-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/70257
    titleApple TV < 6.0 Multiple Vulnerabilities

Seebug

bulletinFamilyexploit
descriptionCVE-2013-3950 Apple iOS是美国苹果(Apple)公司为移动设备所开发的操作系统。支持的设备包括iPhone、iPod Touch、iPad、Apple TV。 Apple iOS 5.1.x版本和6.x至6.1.3版本中的dyld中的dyld.cpp中的‘openSharedCacheFile’函数中存在基于栈的缓冲区溢出漏洞。攻击者可通过DYLD_SHARED_CACHE_DIR环境变量中较长的字符串利用该漏洞实施越狱攻击。 0 Apple iOS 5.1.x Apple iOS 6.x Apple iOS 6.1.3 目前厂商还没有提供此漏洞的相关补丁或者升级程序,建议使用此软件的用户随时关注厂商的主页以获取最新版本: http://www.apple.com/
idSSV:60830
last seen2017-11-19
modified2013-06-06
published2013-06-06
reporterRoot
titleApple iOS ‘openSharedCacheFile’函数基于栈的缓冲区溢出漏洞