PHP realpath()函数绕过safe_mode及open_basedir安全限制漏洞

PHP是一种流行的WEB服务器端编程语言。 PHP的realpath函数实现上存在漏洞，远程攻击者可能利用此漏洞绕过某些安全限制。 PHP的fileexists函数不允许检查是否存在openbasedir指定目录之外的文件，但readfile没有这个限制，允许检查文件系统的任意位置是否存在某一文件。如果realpath$filename返回了字符串（也就是非false），就表示文件存在，这就导致绕过了openbasedir限制。 PHP PHP 5.2.3 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.php.net/downloads.php...

PT-2007-4304 · Php · Php

Name of the Vulnerable Software and Affected Versions: PHP versions prior to 5.2.3 Description: The issue allows context-dependent attackers to determine the existence of arbitrary files by checking if the readfile function returns a string. This might also involve the realpath function...

realpath() BSD and wu-ftpd / BSD FTP / SSH buffer overflow

off-by-one overflow in fbrealpath function in oversized path of few FTP commands...

PHP多个安全漏洞.

PHP是广泛使用的通用目的脚本语言，特别适合于Web开发，可嵌入到HTML中。 PHP中存在多个安全漏洞，具体如下： 1 fileexists、imapopen和imapreopen函数中缺少safemode和openbasedir验证； 2 在64位系统上strrepeat和wordwrap函数存在边界错误； 3 可通过cURL扩展和realpath缓存绕过openbasedir和safemode保护机制； 4 GD扩展处理畸形GIF图形时存在边界条件错误； 5 stripos函数中的错误可能导致界外内存读取； 6 64位系统上存在错误的memorylimit限制。...

CVE-2006-4483

The cURL extension files 1 ext/curl/interface.c and 2 ext/curl/streams.c in PHP before 5.1.5 permit the CURLOPTFOLLOWLOCATION option when openbasedir or safemode is enabled, which allows attackers to perform unauthorized actions, possibly related to the realpath cache...

CVE-2006-4483

The cURL extension files 1 ext/curl/interface.c and 2 ext/curl/streams.c in PHP before 5.1.5 permit the CURLOPTFOLLOWLOCATION option when openbasedir or safemode is enabled, which allows attackers to perform unauthorized actions, possibly related to the realpath cache...

CVE-2006-4483

The cURL extension files 1 ext/curl/interface.c and 2 ext/curl/streams.c in PHP before 5.1.5 permit the CURLOPTFOLLOWLOCATION option when openbasedir or safemode is enabled, which allows attackers to perform unauthorized actions, possibly related to the realpath cache...

php -- multiple vulnerabilities

The PHP development team reports: Added missing safemode/openbasedir checks inside the errorlog, fileexists, imapopen and imapreopen functions. Fixed overflows inside strrepeat and wordwrap functions on 64bit systems. Fixed possible openbasedir/safemode bypass in cURL extension and with realpath...

Stack overflow

Stack-based buffer overflow in Python 2.4.2 and earlier, running on Linux 2.6.12.5 under gcc 4.0.3 with libc 2.3.5, allows local users to cause a "stack overflow," and possibly gain privileges, by running a script from a current working directory that has a long name, related to the realpath...

CVE-2006-1542

Stack-based buffer overflow in Python 2.4.2 and earlier, running on Linux 2.6.12.5 under gcc 4.0.3 with libc 2.3.5, allows local users to cause a "stack overflow," and possibly gain privileges, by running a script from a current working directory that has a long name, related to the realpath...

CVE-2006-1542

CVE-2006-1542 is a stack-based buffer overflow in the Python interpreter (Python 2.4.2 and earlier) that can be triggered by running a script from a current working directory with a long name, related to the realpath handling. The vulnerability affects Linux environments described in the initial ...

PT-2006-2543 · Python · Python

Name of the Vulnerable Software and Affected Versions: Python versions 2.4.2 and earlier Description: A stack-based buffer overflow issue allows local users to cause a stack overflow, and possibly gain privileges, by running a script from a current working directory with a long name. This is...

CVE-2006-0043

Buffer overflow in the realpath function in nfs-server rpc.mountd, as used in SUSE Linux 9.1 through 10.0, allows local users to execute arbitrary code via unspecified vectors involving mount requests and symlinks...

CVE-2006-0043

Buffer overflow in the realpath function in nfs-server rpc.mountd, as used in SUSE Linux 9.1 through 10.0, allows local users to execute arbitrary code via unspecified vectors involving mount requests and symlinks...

Sudo version 1.6.8p9 now available, fixes security issue.

Sudo version 1.6.8, patchlevel 9 is now available, which fixes a race condition in Sudo's pathname validation. This is a security issue. Summary: A race condition in Sudo's command pathname handling prior to Sudo version 1.6.8p9 that could allow a user with Sudo privileges to run arbitrary...

USN-99-2: Fixed php4 packages for USN-99-1

USN-99-1 fixed a safe mode bypass which allowed malicious PHP scripts to circumvent path restrictions by creating a specially crafted directory whose length exceeded the capacity of the realpath function CAN-2004-1064. However, this caused severe regressions, some applications like SquirrelMail a...

USN-99-1: PHP4 vulnerabilities

Stefano Di Paola discovered integer overflows in PHP's pack and unpack functions. A malicious PHP script could exploit these to break out of safe mode and execute arbitrary code with the privileges of the PHP interpreter. CAN-2004-1018 Note: The second part of CAN-2004-1018 buffer overflow in the...

PHP 345 - Multiple LocalRemote Vulnerabilities (1)

PHP 345 - Multiple LocalRemote Vulnerabilities 1 source: https://www.securityfocus.com/bid/11964/info PHP4 and PHP5 are reported prone to multiple local and remote vulnerabilities that may lead to code execution within the context of the vulnerable process. The following specific issues are...

WU-FTPD 2.6.0/2.6.1/2.6.2 - 'realpath()' Off-by-One Buffer Overflow

// source: https://www.securityfocus.com/bid/8315/info The 'realpath' function is a C-library procedure to resolve the canonical, absolute pathname of a file based on a path that may contain values such as '/', './', '../', or symbolic links. A vulnerability that was reported to affect the...

WU-FTPD 2.6.02.6.12.6.2 - realpath() Off-by-One Buffer Overflow

WU-FTPD 2.6.02.6.12.6.2 - realpath Off-by-One Buffer Overflow // source: https://www.securityfocus.com/bid/8315/info The 'realpath' function is a C-library procedure to resolve the canonical, absolute pathname of a file based on a path that may contain values such as '/', './', '../', or symbolic...