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CVE-2014-7292 Newtelligence dasBlog Dest Redirect Privilege Escalation Vulnerability  

2014-11-01 13:54:36|  分类: CVE |  标签: |举报 |字号 订阅

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Exploit Title: Newtelligence dasBlog Dest Redirect Privilege Escalation Vulnerability
Product: dasBlog
Vendor:    Newtelligence
Vulnerable Versions: 2.3 (2.3.9074.18820) 2.2 (2.2.8279.16125) 2.1(2.1.8102.813)
Tested Version: 2.3 (2.3.9074.18820)
Advisory Publication: OCT 15, 2014
Latest Update:    OCT 15, 2014
Vulnerability Type: Open Redirect [CWE-601]
CVSS v2 Base Score: 5.8 (MEDIUM) (AV:N/AC:M/Au:N/C:P/I:P/A:N) (legend)
Impact Subscore: 4.9
Exploitability Subscore: 8.6
Credit: Wang Jing [Mathematics, Nanyang Technological University, Singapore]

 

 








Advisory Details:

Newtelligence dasBlog ct.ashx is vulnerable to Open Redirect attacks.

dasBlog supports a feature called Click-Through which basically tracks all links clicked inside your blog posts. It's a nice feature that allows the blogger to stay informed what kind of content readers like. If Click-Through is turned on, all URLs inside blog entries will be replaced with <URL to your blog>/ct.ashx?id=<Blog entry ID>&url=<URL-encoded original URL> which of course breaks WebSnapr previews.

Web.config code:
<add verb="*" path="ct.ashx" type="newtelligence.DasBlog.Web.Services.ClickThroughHandler, newtelligence.DasBlog.Web.Services"/>

(1) The vulnerability occurs at "ct.ashx?" page, with "&url" parameter,.

 








 

Solutions:
2014-10-15 Public disclosure with self-written patch.

 







References:

http://www.diebyi.com/articles/covert-redirect/sicherheitslucke-in-oauth-2-0-und-openid-gefunden/
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