Akamai bypass github


  • ‘Trojan Source’ Bug Threatens the Security of All Code
  • How hackers community cracked Imperva anti-bot solution
  • The vulnerability disclosure was coordinated with multiple organizations, some of whom are now releasing updates to address the security weakness. Researchers with the University of Cambridge discovered a bug that affects most computer code compilers and many software development environments. At issue is a component of the digital text encoding standard Unicode , which allows computers to exchange information regardless of the language used.

    Unicode currently defines more than , characters across different language scripts in addition to many non-script character sets, such as emojis.

    But computer systems need to have a deterministic way of resolving conflicting directionality in text. As the researchers point out, this fact has previously been exploited to disguise the file extensions of malware disseminated via email.

    This is bad because most programming languages allow comments within which all text — including control characters — is ignored by compilers and interpreters.

    This vulnerability is, as far as I know, the first one to affect almost everything. Our key insight is that we can reorder source code characters in such a way that the resulting display order also represents syntactically valid source code. By injecting Unicode Bidi override characters into comments and strings, an adversary can produce syntactically-valid source code in most modern languages for which the display order of characters presents logic that diverges from the real logic. In effect, we anagram program A into program B.

    Equally concerning is that Bidi override characters persist through the copy-and-paste functions on most modern browsers, editors, and operating systems.

    This fortunately has a very easy signature to scan for, so compilers can [detect] it if they encounter it in the future. The researchers said they offered a day embargo period following their initial disclosure to allow affected products to be repaired with software updates.

    They all confirmed receipt of our disclosure, and ultimately nine of them committed to releasing a patch. Anderson said so far about half of the organizations maintaining the affected computer programming languages contacted have promised patches. Others are dragging their feet. Additional security advisories from other affected languages will be added as updates here.

    As some previous articles in my blog only focus on CTF writeups, so in this time and maybe the next time, I want to write another topic about my research also doing bug bounty hunter.

    So as the topic name above, in this time I will write about my experience when bypass the popular web application firewall WAF of akamai technologies company aka.

    Last weekend, I was invited to a private program on hackerone , and yes for the private info as usually, I will call that program is: 0x Actually, I quickly navigate to the scope section also the thanks page for looking the basic info. At the thanks page: Thanks page of program. You should rethink about that. And yes as usually, when wating the report from medusa-v1. So, I quickly setup an automatic exploit with this parameter, made a coffee cup, draft a SQL injection report to the vendor, waiting the information extracted from automation tool and fill in, submit the report and get the bounty.

    Ez life, ez money. However, as usually: challenges accepted. First of all, I tried every bypass method was public on the internet for bypass Kona WAF but no one success.

    Below are some payload I tried. From this I will find the way that can bypass, suitable with the context and find the payload that can extract the information from database. No mid , ascii function!?! So with the info I collected above, I reviewed again the exception info. Below is the concept. Change the value after the minus math operation if you want to blind the length of value in column. So base on the concept of this, I can extract the value of the columns from database.

    So first of all, I will try to find the length of the value from DDD column at limit 1 position. Length of the value was blinded equal 6 So after the exploit, going to a conclusion that the length of the value from DDD column at limit 1 position equal 6. To extract the value from the DDD column. The STRPOS function will return the 1-based index of the first occurrence of substring inside string, returns 0 if substring is not found.

    For example. So the content of the page will response not the division by zero signature. The next step is determined the string a was blinded locate at which position from the value. Simply add the minus math operation outside the query. If not, the string a not locate at 1st position from the value of the DDD column. So in this context, I extracted the value of the first position from the DDD value is a character.

    Repeat the process to blind all of the value. From the vendor: Vendor confirmed the vulnerability also the WAF bypass exploit and bounty in the same day, the patch was released into the next day.

    Kudos to them for a working hard and very quickly response, I really appreciate it. Everything has its reason.

    Researchers with the University of Cambridge discovered a bug that affects most computer code compilers and many software development environments. At issue is a component of the digital text encoding standard Unicodewhich allows computers to exchange information regardless of the language used.

    Unicode currently defines more thancharacters across different language scripts in addition to many non-script character sets, such as emojis. But computer systems need to have a deterministic way of resolving conflicting directionality in text. As the researchers point out, this fact has previously been exploited to disguise the file extensions of malware disseminated via email.

    ‘Trojan Source’ Bug Threatens the Security of All Code

    This is bad because most programming languages allow comments within which all text — including control characters — is ignored by compilers and interpreters. Some associate themselves with separate headers eg.

    Some often alter headers and jumble characters to confuse attacker eg. Netscaler, Big-IP. Some expose themselves in the Server header eg. Some WAFs expose themselves in the response content eg. DotDefender, Armor, Sitelock.

    Other WAFs reply with unusual response codes upon malicious requests eg. WebKnight, WAF. So base on the concept of this, I can extract the value of the columns from database. So first of all, I will try to find the length of the value from DDD column at limit 1 position. Length of the value was blinded equal 6 So after the exploit, going to a conclusion that the length of the value from DDD column at limit 1 position equal 6.

    How hackers community cracked Imperva anti-bot solution

    To extract the value from the DDD column. The STRPOS function will return the 1-based index of the first occurrence of substring inside string, returns 0 if substring is not found. For example. So the content of the page will response not the division by zero signature. The next step is determined the string a was blinded locate at which position from the value.

    Simply add the minus math operation outside the query. If not, the string a not locate at 1st position from the value of the DDD column.


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