Showing posts with label cyber-intelligence. Show all posts
Showing posts with label cyber-intelligence. Show all posts

Friday, 5 June 2015

Yahoo Yahoo.com Yahoo.co.jp Open Redirect (Unvalidated Redirects and Forwards) Web Security Bugs


















Yahoo Yahoo.com Yahoo.co.jp Open Redirect (Unvalidated Redirects and Forwards) Web Security Bugs



Though Yahoo lists open redirect vulnerability on its bug bounty program. However, it seems Yahoo do not take this vulnerability seriously at all.


Multiple Open Redirect vulnerabilities were reported Yahoo. All Yahoo's responses were "It is working as designed". However, these vulnerabilities were patched later.


Several other security researcher complained about getting similar treatment, too.


All Open Redirect Vulnerabilities are intended behavior? If so, why patch them later?




From report of CNET, Yahoo's users were attacked by redirection vulnerabilities. "Yahoo.com visitors over the last few days may have been served with malware via the Yahoo ad network, according to Fox IT, a security firm in the Netherlands. Users visiting pages with the malicious ads were redirected to sites armed with code that exploits vulnerabilities in Java and installs a variety of different malware. " 
http://www.cnet.com/news/yahoo-users-exposed-to-malware-attack/
Moreover, since Yahoo is well-known worldwide. these vulnerabilities can be used to attack other companies such as Google, eBay, The New York Times, Amazon, Godaddy, Alibaba, Netease, e.g. by bypassing their Open Redirect filters (Covert Redirect). These cyber security bug problems have not been patched. Other similar web and computer flaws will be published in the near future.

The vulnerabilities can be attacked without user login. Tests were performed on Microsoft IE (10.0.9200.16750) of Windows 8, Mozilla Firefox (34.0) & Google Chromium 39.0.2171.65-0 ubuntu0.14.04.1.1064 (64-bit) of Ubuntu (14.04)，Apple Safari 6.1.6 of Mac OS X Lion 10.7. 


Disclosed by:
Jing Wang, Division of Mathematical Sciences (MAS), School of Physical and Mathematical Sciences (SPMS), Nanyang Technological University (NTU), Singapore. (@justqdjing)http://www.tetraph.com/wangjing
Both Yahoo and Yahoo Japan online web application has a computer cyber security bug problem. It can be exploited by Unvalidated Redirects and Forwards (URL Redirection) attacks. This could allow a user to create a specially crafted URL, that if clicked, would redirect a victim from the intended legitimate web site to an arbitrary web site of the attacker's choosing. Such attacks are useful as the crafted URL initially appear to be a web page of a trusted site. This could be leveraged to direct an unsuspecting user to a web page containing attacks that target client side software such as a web browser or document rendering programs.


BugTraq is a full disclosure moderated mailing list for the *detailed* discussion and announcement of computer security vulnerabilities: what they are, how to exploit them, and how to fix them. The below things be posted to the Bugtraq list: (a) Information on computer or network related security vulnerabilities (UNIX, Windows NT, or any other). (b) Exploit programs, scripts or detailed processes about the above. (c) Patches, workarounds, fixes. (d) Announcements, advisories or warnings. (e) Ideas, future plans or current works dealing with computer/network security. (f) Information material regarding vendor contacts and procedures. (g) Individual experiences in dealing with above vendors or security organizations. (h) Incident advisories or informational reporting. (i) New or updated security tools. A large number of the fllowing web securities have been published here, Injection, Broken Authentication and Session Management, Cross-Site Scripting (XSS), Insecure Direct Object References, Security Misconfiguration, Sensitive Data Exposure, Missing Function Level Access Control, Cross-Site Request Forgery (CSRF), Using Components with Known Vulnerabilities, Unvalidated Redirects and Forwards. It also publishes suggestions, advisories, solutions details related to Open Redirect vulnerabilities and cyber intelligence recommendations.


(1) Yahoo.com Open Redirect


 Domain:
yahoo.com

 "Yahoo Inc. (styled as Yahoo!) is an American multinational technology company headquartered in Sunnyvale, California. It is globally known for its Web portal, search engine Yahoo Search, and related services, including Yahoo Directory, Yahoo Mail, Yahoo News, Yahoo Finance, Yahoo Groups, Yahoo Answers, advertising, online mapping, video sharing, fantasy sports and its social media website. It is one of the most popular sites in the United States. According to news sources, roughly 700 million people visit Yahoo websites every month. Yahoo itself claims it attracts more than half a billion consumers every month in more than 30 languages. Yahoo was founded by Jerry Yang and David Filo in January 1994 and was incorporated on March 1, 1995. Marissa Mayer, a former Google executive, serves as CEO and President of the company." (Wikipedia)

Vulnerable URLs:




Poc Video:
https://www.youtube.com/watch?v=k4eFLsTyZkg

Another Yahoo Open Rediect Vulnerability Video Published Before:






(2) Yahoo.co.jp Open Redirect
Domain:
yahoo.co.jp
"Yahoo! JAPAN Corporation (ヤフージャパン株式会社 Yafū Japan Kabushiki-gaisha?) is a Japanese internet company formed as a joint venture between the American internet company Yahoo! and the Japanese internet company SoftBank. It is headquartered at Midtown Tower in the Tokyo Midtown complex in Akasaka, Minato, Tokyo. Yahoo! Japan was listed on JASDAQ in November 1997. In January 2000, it became the first stock in Japanese history to trade for more than ¥100 million per share. The company was listed on the Tokyo Stock Exchange in October 2003 and became part of the Nikkei 225 stock market index in 2005. Yahoo! Japan acquired the naming rights for the Fukuoka Dome in 2005, renaming the dome as the "Fukuoka Yahoo! Japan Dome". The "Yahoo Dome" is the home field for the Fukuoka SoftBank Hawks, a professional baseball team majority owned by SoftBank." (Wikipedia)



Use one of webpages for the following tests. The webpage address is "http://itinfotech.tumblr.com/". Suppose that this webpage is malicious.

Vulnerable URL:

POC:



https://hackertopic.wordpress.com/2015/01/15/yahoo-yahoo-japan-vulnerable-to-spams/
https://plus.google.com/110001022997295385049/posts/4GTENtJY9XE
https://twitter.com/justqdjing/status/546910373169741825
https://www.facebook.com/pcwebsecurities/posts/701648936647693
http://homehut.lofter.com/post/1d226c81_6e6884f
https://tetraph.wordpress.com/2014/12/28/yahoo-open-redirect/
http://itinfotech.tumblr.com/post/118511508076/securitypost-yahooyahoo-japan-may-be
https://computerpitch.wordpress.com/2015/01/27/yahoo-vulnerable-to-spams/
http://testingcode.lofter.com/post/1cd26eb9_73096b9
http://lifegrey.tumblr.com/post/120767572004/yahoo-url-redirection-bug
http://blog.163.com/greensun_2006/blog/static/1112211220155565419870/
http://aibiyi.blogspot.com/2015/06/yahoo-open-redirect.html
https://www.facebook.com/tetraph/posts/1659455054274454
http://www.inzeed.com/kaleidoscope/computer-web-security/yahoo-to-spams/









Posted by at No comments:
Labels: , , , , , , , , , , , , ,

Sunday, 10 May 2015

CVE-2015-2214 - NetCat CMS Full Path Disclosure (Information Disclosure) Web Security Vulnerabilities

201402Return-oriented-programming-ROP-computer-security-exploit-technique

CVE-2015-2214 - NetCat CMS Full Path Disclosure (Information Disclosure) Web Security Vulnerabilities

Exploit Title: CVE-2015-2214 NetCat CMS Full Path Disclosure Web Security Vulnerabilities
Product: NetCat CMS (Content Management System)
Vendor: NetCat
Vulnerable Versions: 5.01   3.12   3.0   2.4   2.3   2.2   2.1   2.0   1.1
Tested Version: 5.01   3.12
Advisory Publication: February 27, 2015
Latest Update: May 05, 2015
Vulnerability Type: Information Leak / Disclosure [CWE-200]
CVE Reference: CVE-2015-2214
Impact CVSS Severity (version 2.0):
CVSS v2 Base Score: 5.0 (MEDIUM) (AV:N/AC:L/Au:N/C:P/I:N/A:N) (legend)
Impact Subscore: 2.9
Exploitability Subscore: 10.0
CVSS Version 2 Metrics:
Access Vector: Network exploitable
Access Complexity: Low
Authentication: Not required to exploit
Impact Type: Allows unauthorized disclosure of information
Credit and Writer: Wang Jing [School of Physical and Mathematical Sciences (SPMS), Nanyang Technological University (NTU), Singapore] (@justqdjing)


 
Consultation Details:

 
(1) Vendor & Product Description:
Vendor:
NetCat

 
Product & Version:
NetCat
5.01   3.12   3.0   2.4   2.3   2.2   2.1   2.0   1.1

 
Vendor URL & Download:
NetCat can be accessed from here,

 
Product Introduction Overview:
NetCat.ru is russian local company. "NetCat designed to create an absolute majority of the types of sites: from simple "business card" with a minimum content to complex web-based systems, from corporate offices to online stores, libraries or media data - in other words, projects completely different directions and at any level of complexity. View examples of sites running on NetCat CMS can be in a special section."

"Manage the site on the basis of NetCat can even inexperienced user, because it does not require knowledge of Internet technologies, programming and markup languages. NetCat constantly improving, adds new features. In the process of finalizing necessarily take into account the wishes of our partners and clients, as well as trends in Internet development. More than 2,000 studios and private web developers have chosen for their projects is NetCat, and in 2013 sites, successfully working on our CMS, created more than 18,000."

"We give a discount on any edition NetCat
We try to help our partners to enter into a close-knit team. To reduce your expenses on the development of a new system, we provide special conditions for the acquisition of commercial licenses NetCat, for a partner is assigned a permanent discount of 40%, which according to the results of further sales could be increased to 60%."

"Teach your developers work with the secrets NetCat
In addition to the detailed documentation and video tutorials to new partners we offer a unique free service - direct contact with the developer from the team NetCat, which will help in the development of product development tools."

"We give customers
Once you develop the three sites NetCat information about you appear in our ranking developers. This means that you not only begin to receive direct requests from clients but also become a member of tenders conducted by customers. In addition, if the partner is really good work, employees NetCat begin recommending it to clients requesting assistance in the choice of contractor."

"We will help in the promotion of
The company is a regular participant NetCat large number of forums, seminars and conferences. We are happy to organize together with partners involved, help with advertising materials and share information for the report."

"Confirmed its status in the eyes of customers
We have a very flexible system of certification of partners: we do not give certificates for the sale of licenses and for the developed sites. So, for example, to obtain a certificate "Development of corporate websites' to add to your personal account three implementation of the appropriate type."

 
(2) Vulnerability Details:
NetCat web application has a computer security bug problem. It can be exploited by information leakage attacks - Full Path Disclosure (FPD). This may allow a remote attacker to disclose the software's installation path. While such information is relatively low risk, it is often useful in carrying out additional, more focused attacks.

Several other similar products 0-day vulnerabilities have been found by some other bug hunter researchers before. Netcat has patched some of them. FusionVM Vulnerability Management and Compliance provides sources for the latest info-sec news, tools, and advisories. It has published suggestions, advisories, solutions details related to important vulnerabilities.


(2.1) The first programming code flaw occurs at "&redirect_url" parameter in "netshop/post.php?" page.




 


References:

Posted by at No comments:
Labels: , , , , , , , , , , , , ,

CVE-2014-9562 OptimalSite Content Management System (CMS) XSS (Cross-Site Scripting) Web Security Vulnerabilities
















CVE-2014-9562 OptimalSite Content Management System (CMS) XSS (Cross-Site Scripting) Web Security Vulnerabilities



Exploit Title:  OptimalSite CMS /display_dialog.php image Parameter XSS Web Security Vulnerability
Vendor: OptimalSite
Product: OptimalSite Content Management System (CMS) 
Vulnerable Versions: V.1 V2.4
Tested Version: V.1 V2.4
Advisory Publication: January 24, 2015
Latest Update: January 31, 2015
Vulnerability Type: Cross-Site Scripting [CWE-79]
CVE Reference: CVE-2014-9562
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
CVSS Version 2 Metrics:
Access Vector: Network exploitable; Victim must voluntarily interact with attack mechanism
Access Complexity: Medium
Authentication: Not required to exploit
Impact Type: Allows unauthorized modification
Credit: Jing Wang [School of Physical and Mathematical Sciences, Nanyang Technological University (NTU), Singapore] (@justqdjing)





Suggestion Details:


(1) Vendor & Product Description

Vendor: 
OptimalSite

Product & Version: 
OptimalSite Content Management System (CMS) 
V.1 
V2.4



Vendor URL & Download:
The product can be obtained from here,



Product Description Overview: 
"Content management system OptimalSite is an online software package that enables the management of information published on a website. OptimalSite consists of the system core and integrated modules, which allow expanding website possibilities and functionality. You may select a set of modules that suits your needs best. 

Website page structure
Website page structure is presented in a tree structure similar to Windows Explorer, so that several page levels can be created for each item on the menu.  The website's structure itself can be easily edited: you can create new website pages, delete unnecessary ones, and temporarily disable individual pages.

Website languages
OptimalSite may be used to create a website in different languages, the number of which is not limited. Different information may be presented in each separate language and the structure of pages in each language may also differ. 

WYSIWYG (What You See Is What You Get) text editor
Using this universal text editor makes posting and replacing information on the website effortless.   Even a minimum knowledge of MS Word and MS Excel will make it easy to use the tools of WYSIWYG text editor and implement your ideas. 

Search function in the system
By using search function system’s administrator is able to find any information that is published in administrative environment. It is possible to execute a search in the whole system and in separate its’ modules as well.

Recycle bin function
System administrator is able to delete useless data.  All deleted data is stored in recycle bin, so administrator can restore information anytime. "






(2) Vulnerability Details:
OptimalSite web application has a computer security bug problem. It can be exploited by stored 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 other the similar product 0-day vulnerabilities have been found by some other bug hunter researchers before. OptinalSite has patched some of them. "Openwall software releases and other related files are also available from the Openwall file archive and its mirrors. You are encouraged to use the mirrors, but be sure to verify the signatures on software you download. The more experienced users and software developers may use our CVSweb server to browse through the source code for most pieces of Openwall software along with revision history information for each source file. We publish articles, make presentations, and offer professional services." Openwall has published suggestions, advisories, solutions details related to XSS vulnerabilities.


(2.1) The code programming flaw occurs at "&image" parameter in "display_dialog.php" page.








http://lists.openwall.net/full-disclosure/2015/02/02/3
http://static-173-79-223-25.washdc.fios.verizon.net/?a=139222176300014&r=1&w=2
http://permalink.gmane.org/gmane.comp.security.fulldisclosure/1546
https://zuiyuxiang.wordpress.com/2015/05/10/cve-2014-9562-optimalsite-content-management-system-cms-xss-cross-site-scripting-security-vulnerabilities/
http://frenchairing.blogspot.com/2015/05/cve-2014-9562-optimalsite-content.html
http://tetraph.blog.163.com/blog/static/234603051201541082835108/
https://www.facebook.com/permalink.php?story_fbid=1623045457913931&id=1567915086760302
https://twitter.com/buttercarrot/status/597377286996791299
http://www.weibo.com/5099722551/ChdSxaqGR?ref=home&rid=4_0_1_2669612892358968742&type=comment
https://plus.google.com/113115469311022848114/posts/9mdeMorsS2C
http://ittechnology.lofter.com/post/1cfbf60d_6e93c47
http://itinfotech.tumblr.com/post/118602673596/securitypost-cve-2014-9562-optimalsite-content











Posted by at No comments:
Labels: , , , , , , , , , , , ,

Saturday, 9 May 2015

ESPN Are Suffering Serious XSS and Dest Redirect Privilege Escalation Security Vulnerabilities












Popular ESPN website (espn.go.com) has been found to be vulnerable to multiple serious XSS and Dest Redirect Privilege Escalation security vulnerabilities according to Wang Jing, a mathematics student from the School of Physical and Mathematical Sciences at Nanyang Technological University in Singapore.


 Wang found a large number of ESPN’s credible links were vulnerable to XSS and Dest Redirect Privilege Escalation attacks. These vulnerabilities occur at ESPN’s “login” & “register” pages.


 ESPN is one of the most common U.S.-based cable and satellite TV channel with close to 100 million subscribers. Its Alexa global rank is 63 and US rank is 14. Based on eBizMBA, “As of December 1, 2014, ESPN has an estimated 80,000,000 unique monthly visitors.” At the same time, ESPN broadcasts in more than 200 countries.


 Wang posted his findings on the Full Disclosure forum. He wrote that he had reported the issues to ESPN in early May 2014 but the vulnerabilities are still unpatched. According to Wang, “Those vulnerabilities are very dangerous. Since they happen at ESPN’s “login” & “register” pages that are credible. Attackers can abuse those links to mislead ESPN’s users. The success rate of attacks may be high.“

Proof of concept videos have also been released on YouTube to illustrate an attack.
(2)Dest Redirect Privilege Escalation DEMO
https://www.youtube.com/watch?v=lCvBt8Elj9w



 According to OWASP, “XSS allows attackers to execute scripts in the victims browser which can hijack user sessions, deface websites or redirect the user to malicious sites.” While Dest Redirect Privilege Escalation “is used in phishing attacks to get users to visit malicious sites without realizing it.”
If ESPN’s users were exploited, attackers can get their identity. Those attacks can also be used to steal password, perform denial of service attacks, spy users’ habits, alter browser functionality, access sensitive information and so on.


 Wang wrote his tests were using Firefox (33.0) in Ubuntu (14.04) and IE (8.0. 7601) in Windows 8. And the attack could work without a user being logged in. 



Posted by at No comments:
Labels: , , , , , , , , , , , , , , ,

Thursday, 15 January 2015

Yahoo and Yahoo Japan May be Vulnerable to Spams










Student security researcher Jing Wang from School of Physical and Mathematical Sciences at Nanyang Technological University, Singapore, has found new security vulnerabilities related to Yahoo.


 After reporting several Open Redirect vulnerabilities to Yahoo. Yahoo’s responses were “It is working as designed”. It seems that Yahoo do not take the vulnerabilities seriously at all.


 Based on Wang’s report on Full Disclosure “Multiple Open Redirect vulnerabilities were reported Yahoo. All Yahoo’s responses were “this intended behavior”. However, these vulnerabilities were patched later.“


 The vulnerability of Yahoo occurs at “ard.yahoo.com” page. While the vulnerability of Yahoo Japan happens at sensitive page “http://order.store.yahoo.co.jp”.
Proof of concept on YouTube were also released to illustrate exploits.
(1)Yahoo Open Redirect
https://www.youtube.com/watch?v=k4eFLsTyZkg
(2)Yahoo Japan Unvalidated Redirects and Forwards (URF)
https://www.youtube.com/watch?v=2SM78WKAVr8

In fact, Yahoo’s users were attacked based on redirection this year. Base onCNET on January 4, 2014, “Yahoo.com visitors over the last few days may have been served with malware via the Yahoo ad network, according to Fox IT, a security firm in the Netherlands. Users visiting pages with the malicious ads were redirected to sites armed with code that exploits vulnerabilities in Java and installs a variety of different malware. ”


 Wang wrote that the attack could work without a user being logged in. And his tests were using Firefox (33.0) in Ubuntu (14.04) and IE (10.0.9200.16521) in Windows 8.
Redirect can ensure a good user experience. However, if it is not properly provided. Attackers can use this to trick users. This is common in Phishing attacks and Spams.


 On 21 December, 2014. Yahoo.com’s Alexa ranking is 4. While Yahoo.co.jp’s Alexa ranking is 17. Both of them are very popular around the world. From Wikipedia, “Yahoo during July 2013 surpassed Google on the number of United States visitors to its Web sites for the first time since May 2011, set at 196 million United States visitors, having increased by 21 percent in a year.”


 Open redirect is listed in OWASP top 10. The general consensus of it is “avoiding such flaws is extremely important, as they are a favorite target of phishers trying to gain the user’s trust.”







Posted by at No comments:
Labels: , , , , , , , , , , , , ,
Subscribe to: Posts (Atom)