Vulnerabilities > CVE-2010-1820 - Improper Authentication vulnerability in Apple mac OS X and mac OS X Server

047910
CVSS 0.0 - NONE
Attack vector
UNKNOWN
Attack complexity
UNKNOWN
Privileges required
UNKNOWN
Confidentiality impact
UNKNOWN
Integrity impact
UNKNOWN
Availability impact
UNKNOWN

Summary

Apple Filing Protocol (AFP) Server in Apple Mac OS X 10.6.x through 10.6.4 does not properly handle errors, which allows remote attackers to bypass the password requirement for shared-folder access by leveraging knowledge of a valid account name.

Common Weakness Enumeration (CWE)

Common Attack Pattern Enumeration and Classification (CAPEC)

  • Authentication Abuse
    An attacker obtains unauthorized access to an application, service or device either through knowledge of the inherent weaknesses of an authentication mechanism, or by exploiting a flaw in the authentication scheme's implementation. In such an attack an authentication mechanism is functioning but a carefully controlled sequence of events causes the mechanism to grant access to the attacker. This attack may exploit assumptions made by the target's authentication procedures, such as assumptions regarding trust relationships or assumptions regarding the generation of secret values. This attack differs from Authentication Bypass attacks in that Authentication Abuse allows the attacker to be certified as a valid user through illegitimate means, while Authentication Bypass allows the user to access protected material without ever being certified as an authenticated user. This attack does not rely on prior sessions established by successfully authenticating users, as relied upon for the "Exploitation of Session Variables, Resource IDs and other Trusted Credentials" attack patterns.
  • Exploiting Trust in Client (aka Make the Client Invisible)
    An attack of this type exploits a programs' vulnerabilities in client/server communication channel authentication and data integrity. It leverages the implicit trust a server places in the client, or more importantly, that which the server believes is the client. An attacker executes this type of attack by placing themselves in the communication channel between client and server such that communication directly to the server is possible where the server believes it is communicating only with a valid client. There are numerous variations of this type of attack.
  • Utilizing REST's Trust in the System Resource to Register Man in the Middle
    This attack utilizes a REST(REpresentational State Transfer)-style applications' trust in the system resources and environment to place man in the middle once SSL is terminated. Rest applications premise is that they leverage existing infrastructure to deliver web services functionality. An example of this is a Rest application that uses HTTP Get methods and receives a HTTP response with an XML document. These Rest style web services are deployed on existing infrastructure such as Apache and IIS web servers with no SOAP stack required. Unfortunately from a security standpoint, there frequently is no interoperable identity security mechanism deployed, so Rest developers often fall back to SSL to deliver security. In large data centers, SSL is typically terminated at the edge of the network - at the firewall, load balancer, or router. Once the SSL is terminated the HTTP request is in the clear (unless developers have hashed or encrypted the values, but this is rare). The attacker can utilize a sniffer such as Wireshark to snapshot the credentials, such as username and password that are passed in the clear once SSL is terminated. Once the attacker gathers these credentials, they can submit requests to the web service provider just as authorized user do. There is not typically an authentication on the client side, beyond what is passed in the request itself so once this is compromised, then this is generally sufficient to compromise the service's authentication scheme.
  • Man in the Middle Attack
    This type of attack targets the communication between two components (typically client and server). The attacker places himself in the communication channel between the two components. Whenever one component attempts to communicate with the other (data flow, authentication challenges, etc.), the data first goes to the attacker, who has the opportunity to observe or alter it, and it is then passed on to the other component as if it was never intercepted. This interposition is transparent leaving the two compromised components unaware of the potential corruption or leakage of their communications. The potential for Man-in-the-Middle attacks yields an implicit lack of trust in communication or identify between two components.

Nessus

NASL familyMacOS X Local Security Checks
NASL idMACOSX_SECUPD2010-006.NASL
descriptionThe remote host is running a version of Mac OS X 10.6 that does not have Security Update 2010-006 applied. This security update fixes an issue in AFP Server by which a remote attacker with knowledge of an account name on the affected system may be able to bypass the password validation and access AFP shared folders. Note that this issue is only exploitable when File Sharing is enabled, and it is not by default.
last seen2020-06-01
modified2020-06-02
plugin id49289
published2010-09-20
reporterThis script is Copyright (C) 2010-2018 Tenable Network Security, Inc.
sourcehttps://www.tenable.com/plugins/nessus/49289
titleMac OS X AFP Shared Folders Unauthenticated Access (Security Update 2010-006)
code
#
# (C) Tenable Network Security, Inc.
#


if (!defined_func("bn_random")) exit(0);
if (NASL_LEVEL < 3000) exit(0);


include("compat.inc");


if (description)
{
  script_id(49289);
  script_version("1.9");
  script_cvs_date("Date: 2018/07/14  1:59:35");

  script_cve_id("CVE-2010-1820");
  script_bugtraq_id(43341);

  script_name(english:"Mac OS X AFP Shared Folders Unauthenticated Access (Security Update 2010-006)");
  script_summary(english:"Check for the presence of Security Update 2010-006");

  script_set_attribute(
    attribute:"synopsis",
    value:
"The remote host is missing a Mac OS X update that fixes a security
issue."
  );
  script_set_attribute(
    attribute:"description", 
    value:
"The remote host is running a version of Mac OS X 10.6 that does not
have Security Update 2010-006 applied. 

This security update fixes an issue in AFP Server by which a remote
attacker with knowledge of an account name on the affected system
may be able to bypass the password validation and access AFP shared 
folders.

Note that this issue is only exploitable when File Sharing is enabled,
and it is not by default."
  );
  script_set_attribute(
    attribute:"see_also", 
    value:"http://support.apple.com/kb/HT4361"
  );
  script_set_attribute(
    attribute:"see_also", 
    value:"http://lists.apple.com/archives/security-announce/2010/Sep/msg00004.html"
  );
  script_set_attribute(
    attribute:"solution", 
    value:"Install Security Update 2010-006 or later."
  );
 script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:P/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:"vuln_publication_date", value:"2010/09/20");
  script_set_attribute(attribute:"patch_publication_date", value:"2010/09/20");
  script_set_attribute(attribute:"plugin_publication_date", value:"2010/09/20");
  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:apple:mac_os_x");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_family(english:"MacOS X Local Security Checks");
  script_copyright(english:"This script is Copyright (C) 2010-2018 Tenable Network Security, Inc.");

  script_dependencies("ssh_get_info.nasl");
  script_require_keys("Host/MacOSX/packages", "Host/uname");

  exit(0);
}


uname = get_kb_item("Host/uname");
if (!uname) exit(1, "The 'Host/uname' KB item is missing.");

pat = "^.+Darwin.* ([0-9]+\.[0-9.]+).*$";
if (!ereg(pattern:pat, string:uname)) exit(1, "Can't identify the Darwin kernel version from the uname output ("+uname+").");


darwin = ereg_replace(pattern:pat, replace:"\1", string:uname);
if (ereg(pattern:"^10\.[0-4]\.", string:darwin))
{
  packages = get_kb_item("Host/MacOSX/packages/boms");
  if (!packages) exit(1, "The 'Host/MacOSX/packages/boms' KB item is missing.");

  if (egrep(pattern:"^com\.apple\.pkg\.update\.security\.(2010\.00[6-9]|201[1-9]\.[0-9]+)(\.snowleopard)?\.bom", string:packages)) 
    exit(0, "The host has Security Update 2010-006 or later installed and therefore is not affected.");
  else 
    security_hole(0);
}
else exit(0, "The host is running Darwin kernel version "+darwin+" and therefore is not affected.");

Oval

accepted2011-03-28T04:00:05.672-04:00
classvulnerability
contributors
nameNate Przybyszewski
organizationThe MITRE Corporation
definition_extensions
commentApple Security Update 2010-006 is Installed
ovaloval:org.mitre.oval:def:11637
descriptionApple Filing Protocol (AFP) Server in Apple Mac OS X 10.6.x through 10.6.4 does not properly handle errors, which allows remote attackers to bypass the password requirement for shared-folder access by leveraging knowledge of a valid account name.
familymacos
idoval:org.mitre.oval:def:12109
statusaccepted
submitted2011-02-03T13:00:00
titleSnow Leopard Apple Filing Protocol (AFP) Password Bypass
version50

Seebug

bulletinFamilyexploit
descriptionBUGTRAQ ID: 43341 CVE(CAN) ID: CVE-2010-1820 Mac OS X是苹果家族机器所使用的操作系统。 Mac OS X的AFP Server服务器中存在绕过口令验证漏洞,用户只需知道目标机器上的账号就可以访问AFP共享的文件夹。 Apple Mac OS X 10.6.4 Apple MacOS X Server 10.6.4 厂商补丁: Apple ----- 目前厂商已经发布了升级补丁以修复这个安全问题,请到厂商的主页下载: http://www.apple.com/support/downloads/
idSSV:20131
last seen2017-11-19
modified2010-09-25
published2010-09-25
reporterRoot
titleMac OS X AFP Server绕过口令验证漏洞