6kbbs v8.0 XSS (Cross-site Scripting) Security Vulnerabilities

2015.04.07
Credit: Wang Jing
Risk: Low
Local: No
Remote: Yes
CVE: N/A
CWE: CWE-79

*6kbbs v8.0 XSS (Cross-site Scripting) Security Vulnerabilities* Exploit Title: 6kbbs XSS (Cross-site Scripting) Security Vulnerabilities Vendor: 6kbbs Product: 6kbbs Vulnerable Versions: v7.1 v8.0 Tested Version: v7.1 v8.0 Advisory Publication: April 02, 2015 Latest Update: April 02, 2015 Vulnerability Type: Cross-Site Scripting [CWE-79] CVE Reference: * Impact CVSS Severity (version 2.0): CVSS v2 Base Score: 4.3 (MEDIUM) (AV:N/AC:M/Au:N/C:N/I:P/A:N) (legend) Impact Subscore: 2.9 Exploitability Subscore: 8.6 Writer and Reporter: Wang Jing [CCRG, Nanyang Technological University (NTU), Singapore] *Suggestion Details:* *(1) Vendor & Product Description:* *Vendor:* 6kbbs *Product & Vulnerable Versions:* 6kbbs v7.1 v8.0 *Vendor URL & download:* 6kbbs can be obtained from here, http://www.6kbbs.com/download.html http://code.google.com/p/6kbbs/downloads/list *Product Introduction Overview:* "6kbbs V8.0 is a PHP + MySQL built using high-performance forum, has the code simple, easy to use, powerful, fast and so on. It is an excellent community forum program. The program is simple but not simple; fast, small; Interface generous and good scalability; functional and practical pursuing superior performance, good interface, the user's preferred utility functions." "1, using XHTML + CSS architecture, so that the structure of the page, saving transmission static page code, but also easy to modify the interface, more in line with WEB standards; 2, the Forum adopted Cookies, Session, Application and other technical data cache on the forum, reducing access to the database to improve the performance of the Forum. Can carry more users simultaneously access; 3, the data points table function, reduce the burden on the amount of data when accessing the database; 4, support for multi-skin style switching function; 5, the use of RSS technology to support subscriptions forum posts, recent posts, user's posts; 6, the display frame mode + tablet mode, the user can choose according to their own preferences to; 7. forum page optimization keyword search, so the forum more easily indexed by search engines; 8, extension, for our friends to provide a forum for a broad expansion of space services; 9, webmasters can add different top and bottom of the ad, depending on the layout; 10, post using HTML + UBB way the two editors, mutual conversion, compatible with each other; ..." *(2) Vulnerability Details:* 6kbbs web application has a security bug problem. It can be exploited by XSS attacks. This may allow a remote attacker to create a specially crafted request that would execute arbitrary script code in a user's browser session within the trust relationship between their browser and the server. Several 6kbbs products 0-day vulnerabilities have been found by some other bug hunter researchers before. 6kbbs has patched some of them. The milw00rm.com is archive of exploits, videos, papers and vulnerabilities. It has published suggestions, advisories, solutions details related to 6kbbs vulnerabilities. *(2.1)* The first code programming flaw occurs atoccurs at "/userlist.php?" page with "&orderby" parameter. *References:* http://www.tetraph.com/security/xss-vulnerability/6kbbs-v8-0-xss-cross-site-scripting-security-vulnerabilities/ http://securityrelated.blogspot.sg/2015/04/6kbbs-v80-xss-cross-site-scripting.html?view=sidebar http://www.inzeed.com/kaleidoscope/computer-web-security/6kbbs-v8-0-xss-cross-site-scripting-security-vulnerabilities/ http://diebiyi.com/articles/%E5%AE%89%E5%85%A8/6kbbs-v8-0-xss-cross-site-scripting-security-vulnerabilities/ https://hackertopic.wordpress.com/2015/04/02/6kbbs-v8-0-xss-cross-site-scripting-security-vulnerabilities/ http://marc.info/?a=139222176300014&r=1&w=4 http://packetstormsecurity.com/files/authors/11717 https://www.mail-archive.com/fulldisclosure%40seclists.org/msg01759.html http://milw00rm.com/exploits/6673 -- Wang Jing, Division of Mathematical Sciences (MAS), School of Physical and Mathematical Sciences (SPMS), Nanyang Technological University (NTU), Singapore. http://www.tetraph.com/wangjing/ https://twitter.com/justqdjing


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