Vulnerability Information
Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.
Vulnerability Title
N/A
Vulnerability Description
The resource system in PHP 4.0.0 through 4.4.6 and 5.0.0 through 5.2.1 allows context-dependent attackers to execute arbitrary code by interrupting certain functions in the GD (ext/gd) extension and unspecified other extensions via a userspace error handler, which can be used to destroy and modify internal resources.
CVSS Information
N/A
Vulnerability Type
N/A
Vulnerability Title
PHP GD扩展访问已释放资源漏洞
Vulnerability Description
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 GD资源使用的机制上存在漏洞,本地攻击者可能利用此漏洞提升自己的权限。 如果PHP函数需要追踪数据结构的话,会使用Zend引擎注册资源。资源系统有引用计数器,但这些计数器只追踪指向实际资源的PHP变量,没有计数器计算有多少函数正在使用内部资源。由于这种设计导致PHP代码中存在一个bug。如果用户代码能够在通过资源标识符获得资源数据后中断PHP函数的话,就可以释放资源,在已释放资源相同的内存位置分配相同大小的PHP字符串
CVSS Information
N/A
Vulnerability Type
N/A