Vulnerabilities > CVE-2011-3231 - Code Injection vulnerability in Apple Safari
Attack vector
NETWORK Attack complexity
MEDIUM Privileges required
NONE Confidentiality impact
PARTIAL Integrity impact
PARTIAL Availability impact
PARTIAL Summary
The SSL implementation in Apple Safari before 5.1.1 on Mac OS X before 10.7 accesses uninitialized memory during the processing of X.509 certificates, which allows remote web servers to execute arbitrary code via a crafted certificate.
Vulnerable Configurations
Common Weakness Enumeration (CWE)
Common Attack Pattern Enumeration and Classification (CAPEC)
- Leverage Executable Code in Non-Executable Files An attack of this type exploits a system's trust in configuration and resource files, when the executable loads the resource (such as an image file or configuration file) the attacker has modified the file to either execute malicious code directly or manipulate the target process (e.g. application server) to execute based on the malicious configuration parameters. Since systems are increasingly interrelated mashing up resources from local and remote sources the possibility of this attack occurring is high. The attack can be directed at a client system, such as causing buffer overrun through loading seemingly benign image files, as in Microsoft Security Bulletin MS04-028 where specially crafted JPEG files could cause a buffer overrun once loaded into the browser. Another example targets clients reading pdf files. In this case the attacker simply appends javascript to the end of a legitimate url for a pdf (http://www.gnucitizen.org/blog/danger-danger-danger/) http://path/to/pdf/file.pdf#whatever_name_you_want=javascript:your_code_here The client assumes that they are reading a pdf, but the attacker has modified the resource and loaded executable javascript into the client's browser process. The attack can also target server processes. The attacker edits the resource or configuration file, for example a web.xml file used to configure security permissions for a J2EE app server, adding role name "public" grants all users with the public role the ability to use the administration functionality. The server trusts its configuration file to be correct, but when they are manipulated, the attacker gains full control.
- Manipulating User-Controlled Variables This attack targets user controlled variables (DEBUG=1, PHP Globals, and So Forth). An attacker can override environment variables leveraging user-supplied, untrusted query variables directly used on the application server without any data sanitization. In extreme cases, the attacker can change variables controlling the business logic of the application. For instance, in languages like PHP, a number of poorly set default configurations may allow the user to override variables.
Nessus
| NASL family | MacOS X Local Security Checks |
| NASL id | MACOSX_SAFARI5_1_1.NASL |
| description | The version of Apple Safari installed on the remote Mac OS X host is earlier than 5.1.1. Thus, it is potentially affected by numerous issues in the following components : - Safari - WebKit |
| last seen | 2020-06-01 |
| modified | 2020-06-02 |
| plugin id | 56482 |
| published | 2011-10-13 |
| reporter | This script is Copyright (C) 2011-2018 Tenable Network Security, Inc. |
| source | https://www.tenable.com/plugins/nessus/56482 |
| title | Mac OS X : Apple Safari < 5.1.1 |
| code | |
Seebug
| bulletinFamily | exploit |
| description | CVE ID: CVE-2011-3231 Safari是苹果计算机的最新作业系统Mac OS X中的浏览器，使用了KDE的KHTML作为浏览器的运算核心。 Safari在处理SSL证书时存在未初始化内存访问漏洞，浏览恶意网站可导致任意代码执行。此漏洞不影响OS X Lion系统或Windows系统。 Apple Mac OS X 10.6.8 Apple Mac OS X Server v10.6.8 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://support.apple.com/ |
| id | SSV:23107 |
| last seen | 2017-11-19 |
| modified | 2011-10-17 |
| published | 2011-10-17 |
| reporter | Root |
| title | Apple Safari SSL证书处理未初始化内存访问远程代码执行漏洞 |