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缺陷编号:wooyun-2015-093261

漏洞标题:Udemy某业务弱口令导致主站沦陷

相关厂商:Udemy

漏洞作者: 新一葛格

提交时间:2015-01-22 12:10

修复时间:2015-01-27 12:12

公开时间:2015-01-27 12:12

漏洞类型:后台弱口令

危害等级:高

自评Rank:20

漏洞状态:漏洞已经通知厂商但是厂商忽略漏洞

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:

2015-01-22: 细节已通知厂商并且等待厂商处理中
2015-01-27: 厂商已经主动忽略漏洞,细节向公众公开

简要描述:

在我的记忆中有一个网站,Udemy……
那是一个南方的寒冬,
摄氏 9 度,喝着生姜味汽水,看着 Udemy 的视频,我了解到了 Gephi,一个不错的数据分析工具。后来,工作正好用到;
又是一年春天,我来到了北方,北京的街道上漫天飞絮,我的心情有点蓝蓝的,朋友说,Udemy 帐号付了费,你可以学点东西,你需要继续前行……
今天,一个北方寒冬里的星期三,摄氏 - 1 度,暖气让人觉得有点热。
这次,依然是通过 Udemy 学习,不过是学 Hacking。
————————————————————————————————
There is a website in my memory, Udemy.
I remembered that, in a cold southern winter, being in 9 ℃, drinking the ginger ale,watching Udemy's video, I learned about Gephi which is a data-analysing tool. And it's exactly fit for my later work.
It's another spring. I came to the north, walking on Beijing's street,seeing the flying catkins all over the air,I felt so blue. My friend told me, there is a Udemy pro account, so you can learn something from it. You should keep moving on.
Today, it's a Wednesday in the freezing northern winter. being in -1 ℃, the heating made me feel a little hot.
This time, still by Udemy, I'm learning. However, I'm learning hacking.

详细说明:

我发现 Udemy 博客有几个弱口令帐号。
I found some administrators' passwords of this blog are weak.
(地址/Address: http://www.udemy.com/blog)
e.g,
usrname: Onur
pwd: udemy
因此我利用以上弱口令登入了 Udemy 博客后台。
如你所见,我们能通过修改 pugin code 来 getshell 了
So I made use of this weak password and access to Udemy blog's dashboard.
As you could see, we could edit the plugin code and getshell.
我修改了 google-sitemap-plugin/google-sitemap-plugin.php (见于下方图示)
另外,我没做任何破坏 :)
I changed google-sitemap-plugin/google-sitemap-plugin.php (see the chart below )
as an aside, I did not do any damage. :)

漏洞证明:

plugin.png


chopper.png

修复方案:

kill all weak passwords!

版权声明:转载请注明来源 新一葛格@乌云


漏洞回应

厂商回应:

危害等级:无影响厂商忽略

忽略时间:2015-01-27 12:12

厂商回复:

最新状态:

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