Vulnerability Information
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Vulnerability Title
N/A
Vulnerability Description
PHP 5.2.1 allows context-dependent attackers to read portions of heap memory by executing certain scripts with a serialized data input string beginning with S:, which does not properly track the number of input bytes being processed.
CVSS Information
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Vulnerability Type
N/A
Vulnerability Title
PHP S数据类型序列化格式堆信息泄露漏洞
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的unserialize()函数在还原序列化特制的S:数据类型时存在错误，本地攻击者可能利用此漏洞访问到内存信息。 例如，在还原以下转义字符串时： S:10:"\55\44APXY" 上述例子不会返回6字节的字符串，而是10字节或错误，因为还原序列化不会在处理10个输入字节时停止而是在写出10个输出字节时才会停止。如果下一个字节是"""字符的话，这就会导致泄漏最后一个实际输出字节与"""之间的内存。
CVSS Information
N/A
Vulnerability Type
N/A