{"id":405,"date":"2021-10-21T18:50:37","date_gmt":"2021-10-21T13:20:37","guid":{"rendered":"https:\/\/www.pethuraj.com\/blog\/?p=405"},"modified":"2021-10-22T18:38:07","modified_gmt":"2021-10-22T13:08:07","slug":"houzz-ssrf-vulnerability-bugbounty-writeup","status":"publish","type":"post","link":"https:\/\/www.pethuraj.com\/blog\/houzz-ssrf-vulnerability-bugbounty-writeup\/","title":{"rendered":"Houzz &#8211; SSRF Vulnerability Bugbounty Writeup"},"content":{"rendered":"\n<p>Hello Infosec folks, here is a new and interesting writeup for you all. It\u2019s about how I found Server Side Request Forgery vulnerability on the Houzz domain. Let get started.<\/p>\n\n\n\n<p>Server-side request forgery (also known as SSRF) is a web security vulnerability that<br>allows an attacker to induce the server-side application to make HTTP requests to<br>an arbitrary domain of the attacker&#8217;s choosing.<br><\/p>\n\n\n\n<p>In a typical SSRF attack, the attacker might cause the server to make a connection to internal-only services within the organisation&#8217;s infrastructure. In other cases, they may be able to force the server to connect to arbitrary external systems, potentially<br>leaking sensitive data such as authorization credentials.<\/p>\n\n\n\n<p>Lets get started with houzz application. I have signed up and logged into the main<br>domain URL. I explored the site and its various functionalities and then my eyes caught an endpoint to upload an image via web so I thought of playing with such an interesting functionality. Tried different attack vectors on this endpoint but there was no luck.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img fetchpriority=\"high\" decoding=\"async\" width=\"1024\" height=\"595\" src=\"https:\/\/www.pethuraj.com\/blog\/wp-content\/uploads\/2021\/10\/Vulnerable-Endpoint-1024x595.png\" alt=\"\" class=\"wp-image-406\" srcset=\"https:\/\/www.pethuraj.com\/blog\/wp-content\/uploads\/2021\/10\/Vulnerable-Endpoint-1024x595.png 1024w, https:\/\/www.pethuraj.com\/blog\/wp-content\/uploads\/2021\/10\/Vulnerable-Endpoint-300x174.png 300w, https:\/\/www.pethuraj.com\/blog\/wp-content\/uploads\/2021\/10\/Vulnerable-Endpoint-768x446.png 768w, https:\/\/www.pethuraj.com\/blog\/wp-content\/uploads\/2021\/10\/Vulnerable-Endpoint-1536x892.png 1536w, https:\/\/www.pethuraj.com\/blog\/wp-content\/uploads\/2021\/10\/Vulnerable-Endpoint-2048x1190.png 2048w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<p>After all the failed attempts of different payloads for different attacks. I tried with any<br>random URL in \u201cAdd web page URL\u201d text field, captured the Http request on Burp Suite and<br>sent it to the repeater for further inspection.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" width=\"1024\" height=\"453\" src=\"https:\/\/www.pethuraj.com\/blog\/wp-content\/uploads\/2021\/10\/houzz-vulnerable-request-1024x453.png\" alt=\"\" class=\"wp-image-408\" srcset=\"https:\/\/www.pethuraj.com\/blog\/wp-content\/uploads\/2021\/10\/houzz-vulnerable-request-1024x453.png 1024w, https:\/\/www.pethuraj.com\/blog\/wp-content\/uploads\/2021\/10\/houzz-vulnerable-request-300x133.png 300w, https:\/\/www.pethuraj.com\/blog\/wp-content\/uploads\/2021\/10\/houzz-vulnerable-request-768x340.png 768w, https:\/\/www.pethuraj.com\/blog\/wp-content\/uploads\/2021\/10\/houzz-vulnerable-request-1536x680.png 1536w, https:\/\/www.pethuraj.com\/blog\/wp-content\/uploads\/2021\/10\/houzz-vulnerable-request-2048x906.png 2048w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<p>As shown in the Http request in the above snapshot, I quickly sent this to Burp Collaborator<br>and replace the random URL with Collaborator URL and hit send, observed the<br>following Burp Collaborator request as shown which is hitting HTTP and DNS<br>requests on Burp Collaborator Client.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" width=\"1024\" height=\"758\" src=\"https:\/\/www.pethuraj.com\/blog\/wp-content\/uploads\/2021\/10\/houzz-response-1024x758.png\" alt=\"\" class=\"wp-image-409\" srcset=\"https:\/\/www.pethuraj.com\/blog\/wp-content\/uploads\/2021\/10\/houzz-response-1024x758.png 1024w, https:\/\/www.pethuraj.com\/blog\/wp-content\/uploads\/2021\/10\/houzz-response-300x222.png 300w, https:\/\/www.pethuraj.com\/blog\/wp-content\/uploads\/2021\/10\/houzz-response-768x569.png 768w, https:\/\/www.pethuraj.com\/blog\/wp-content\/uploads\/2021\/10\/houzz-response-1536x1138.png 1536w, https:\/\/www.pethuraj.com\/blog\/wp-content\/uploads\/2021\/10\/houzz-response.png 2036w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<p>Finally, a successful SSRF attack!! I could have exploited this attack to perform internal port scan, to escalate to command injection and to infiltrate the data. But I stopped with this and reported to their security team. Hope you liked the writeup.<\/p>\n\n\n\n<p>For reporting this vulnerability to the Houzz Security Team responsible, I&#8217;ve been acknowledged in their Hall of Fame page &#8211; <a href=\"https:\/\/help.houzz.com\/s\/article\/Houzz-Security-Policy?language=en_US\" target=\"_blank\" rel=\"noreferrer noopener nofollow\">https:\/\/help.houzz.com\/s\/article\/Houzz-Security-Policy?language=en_US<\/a><\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"843\" height=\"831\" src=\"https:\/\/www.pethuraj.com\/blog\/wp-content\/uploads\/2021\/10\/Hall-of-Fame.png\" alt=\"\" class=\"wp-image-410\" srcset=\"https:\/\/www.pethuraj.com\/blog\/wp-content\/uploads\/2021\/10\/Hall-of-Fame.png 843w, https:\/\/www.pethuraj.com\/blog\/wp-content\/uploads\/2021\/10\/Hall-of-Fame-300x296.png 300w, https:\/\/www.pethuraj.com\/blog\/wp-content\/uploads\/2021\/10\/Hall-of-Fame-768x757.png 768w\" sizes=\"(max-width: 843px) 100vw, 843px\" \/><\/figure>\n\n\n\n<p><br>Stay tuned with my blogs to get more exciting writeup. Happy Learning and Happy Hacking!!<\/p>\n\n\n\n<p><strong>Get in touch with me &#8211; <\/strong><\/p>\n\n\n\n<p><a href=\"https:\/\/twitter.com\/Pethuraj\" target=\"_blank\" rel=\"noreferrer noopener\">https:\/\/twitter.com\/Pethuraj<\/a><br><a href=\"https:\/\/www.linkedin.com\/in\/pethu\/\" target=\"_blank\" rel=\"noreferrer noopener\">https:\/\/www.linkedin.com\/in\/pethu\/<\/a><\/p>\n\n\n\n<p><strong>You may like!<\/strong><\/p>\n\n\n<div class=\"pt-cv-wrapper\"><div class=\"pt-cv-view pt-cv-grid pt-cv-colsys\" id=\"pt-cv-view-21a95fcmws\"><div data-id=\"pt-cv-page-1\" class=\"pt-cv-page\" data-cvc=\"2\"><div class=\"col-md-6 col-sm-6 col-xs-12 pt-cv-content-item pt-cv-1-col\" ><div class='pt-cv-ifield'><a href=\"https:\/\/www.pethuraj.com\/blog\/how-to-use-burp-suite-like-a-pro-part-2\/\" class=\"_self pt-cv-href-thumbnail pt-cv-thumb-default\" target=\"_self\" ><img loading=\"lazy\" decoding=\"async\" width=\"300\" height=\"150\" src=\"https:\/\/www.pethuraj.com\/blog\/wp-content\/uploads\/2025\/01\/Use-Burp-Suite-like-a-PRO-Part-2-300x150.png\" class=\"pt-cv-thumbnail\" alt=\"\" srcset=\"https:\/\/www.pethuraj.com\/blog\/wp-content\/uploads\/2025\/01\/Use-Burp-Suite-like-a-PRO-Part-2-300x150.png 300w, https:\/\/www.pethuraj.com\/blog\/wp-content\/uploads\/2025\/01\/Use-Burp-Suite-like-a-PRO-Part-2-768x384.png 768w, https:\/\/www.pethuraj.com\/blog\/wp-content\/uploads\/2025\/01\/Use-Burp-Suite-like-a-PRO-Part-2.png 800w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><\/a>\n<h4 class=\"pt-cv-title\"><a href=\"https:\/\/www.pethuraj.com\/blog\/how-to-use-burp-suite-like-a-pro-part-2\/\" class=\"_self\" target=\"_self\" >How to use Burp Suite Like a PRO? PART \u2013 2<\/a><\/h4>\n<div class=\"pt-cv-content\">Ready to level up your Burp Suite skills? 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PART &#8211; 1<\/a><\/h4>\n<div class=\"pt-cv-content\">This blog series is an advanced tutorial of the popular web application security and penetration testing tool Burp Suite,\u00a0to help ...<br \/><div class=\"pt-cv-rmwrap\"><a href=\"https:\/\/www.pethuraj.com\/blog\/use-burpsuite-like-a-pro-part-1\/\" class=\"_self pt-cv-readmore btn btn-success\" target=\"_self\">Read More<\/a><\/div><\/div><\/div><\/div><\/div><\/div><\/div>\n","protected":false},"excerpt":{"rendered":"<p>Writeup about the SSRF vulnerability that I found on the Houzz domain.<\/p>\n","protected":false},"author":1,"featured_media":407,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[17],"tags":[18],"class_list":["post-405","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-ssrf","tag-ssrf"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.6 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Houzz - SSRF Vulnerability Bugbounty Writeup - Pethuraj&#039;s Blog<\/title>\n<meta name=\"description\" content=\"This Writeup is about the SSRF vulnerability that I found on the Houzz domain.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.pethuraj.com\/blog\/houzz-ssrf-vulnerability-bugbounty-writeup\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Houzz - SSRF Vulnerability Bugbounty Writeup\" \/>\n<meta property=\"og:description\" content=\"Writeup about the SSRF vulnerability that I found on the Houzz domain.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.pethuraj.com\/blog\/houzz-ssrf-vulnerability-bugbounty-writeup\/\" \/>\n<meta property=\"og:site_name\" content=\"Pethuraj&#039;s Blog\" \/>\n<meta property=\"article:published_time\" content=\"2021-10-21T13:20:37+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2021-10-22T13:08:07+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.pethuraj.com\/blog\/wp-content\/uploads\/2021\/10\/houzz.png\" \/>\n\t<meta property=\"og:image:width\" content=\"800\" \/>\n\t<meta property=\"og:image:height\" content=\"400\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/png\" \/>\n<meta name=\"author\" content=\"admin\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:title\" content=\"Houzz - SSRF Vulnerability Bugbounty Writeup\" \/>\n<meta name=\"twitter:description\" content=\"Writeup about the SSRF vulnerability that I found on the Houzz domain.\" \/>\n<meta name=\"twitter:image\" content=\"https:\/\/www.pethuraj.com\/blog\/wp-content\/uploads\/2021\/10\/houzz.png\" \/>\n<meta name=\"twitter:creator\" content=\"@Pethuraj\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"admin\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"3 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/www.pethuraj.com\\\/blog\\\/houzz-ssrf-vulnerability-bugbounty-writeup\\\/#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/www.pethuraj.com\\\/blog\\\/houzz-ssrf-vulnerability-bugbounty-writeup\\\/\"},\"author\":{\"name\":\"admin\",\"@id\":\"https:\\\/\\\/www.pethuraj.com\\\/blog\\\/#\\\/schema\\\/person\\\/6753ae21567c179c4592cb8ed33406aa\"},\"headline\":\"Houzz &#8211; 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