您好我发现某些代码注入我的php应用程序。 有没有人知道这是怎么可能的,也解释了如何避免这种注射。 代码存在于img标签的src属性下。 请帮助弄清楚这段代码的作用是什么?
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HHdp2vpqv+D/AEzXm0+/n0Wws107y3shbs2ZExL5boTGuD0IXPOOi59pdQgv7zUdPuItPuIFguJG
d0eLeQYiobBJGcnHfgVVl0y3vkS3aCaGQzoy3NvZvD5Z2NtIyOoYcnpyAfQQyW95OIft+nZu49Th
86WKHcsqqv8ArBgfdxjr0OR2qGbx33XXo+uncsy6Zey3kdxHa3EWY/LnhklQxzrtYc8kq/PUevU8
1p+H7O6srWaK4kmePzB5JuNplC7QMMy8HBBGeuBWHptqkT3fn2EhRrm7Ma/YH3YYnB3Y+7t3AD/a
HWpfDdrLG+jmG1mtli00RXwkhMe+QBAowQMkEPz7+9OO6Yqybg4t6Ly9et/l+B2FFJ0orc8o/9k='
答案 0 :(得分:2)
这个“恶意代码”是JPEG图像。
像这样:
答案 1 :(得分:0)
此代码没有任何问题。它只是图像的base64编码字节数组。
答案 2 :(得分:0)
正如已经指出的,这只是一个字节编码的图像。您可以通过在显示/存储用户输入之前正确转义用户输入来避免此类注入(例如,在您的数据库中)。你应该看一下HTMLPurifier。
答案 3 :(得分:0)
这不是恶意软件代码。这实际上是一个图像。 (我甚至可以告诉你,已经在Photoshop3.0中创建/修改了)你的代码在其他地方有问题。看起来您正在使用数据本身作为文件的名称。