StackOverflow2013

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plurals

PO
primarykey
Id
8963473
data
AcceptedAnswerId
0
AnswerCount
0
ClosedDate
CommentCount
0
CommunityOwnedDate
CreationDate
2012-01-22T18:27:58.893
FavoriteCount
0
LastActivityDate
2012-01-22T18:46:10.243
LastEditDate
2012-01-22T18:46:10.243
LastEditorUserId
188407
OwnerUserId
188407
ParentId
8963279
PostTypeId
2
Score
5
ViewCount
0
LastEditorDisplayName
text
Body
There are two types are XSS attacks: Reflected XSS and Persistent XSS attacks. What you've described, where a user of the site inputs data that gets saved on the server side, and is rendered for anyone viewing a page, is considered Persistent XSS. Similar attacks would be if you have a comment box on a post that doesn't escape Javascript, or a profile page I can put anything into. The other class of XSS attacks is Reflected XSS. These are a little more complicated, but they amount to one of the arguments in the URL for a page not being escaped. They frequently come up in things like Search pages on large websites. You'll get a URL that includes some javascript in it (sorry, my example got mangled by the renderer here, so I can't show you an example) , and the page will render the javascript which would allow someone to craft a malicious URL. These are especially dangerous on sites that hand any sort of financial data; imagine a conscientious user who always checks to make sure the they're going to the write link to their bank, but because of a Reflected XSS attack an attacker is able to send them to a legitimate page on their bank's website, but that has malicious code in it. In any case, your example is Persistent XSS. You can do even more nefarious things with attacks like that than just changing where a login form sends users. They've been popular for years to do things like scraping information from personal areas of sites, or coupled with CSRF to cause an authenticated user to do something by simply looking at a page. There were a few MySpace viruses a while back that did that, and spread from profile to profile.
Tags
Title
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PostAcceptedAnswerId
1. This table or related slice is empty.
PostParentId
1. POIs user input of HTML with Javascript that is displayed to others but not HTML-escaped an example of a XSS
 singulars
 PostTypePostTypeId
 PTQuestion
PostTypePostTypeId
1. PTAnswer
UserLastEditorUserId
1. USSkolor
UserOwnerUserId
1. USSkolor
plurals
PostLinksPostIdRelatedPostId
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PostLinksRelatedPostIdPostId
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PostsAcceptedAnswerId
1. POIs user input of HTML with Javascript that is displayed to others but not HTML-escaped an example of a XSS
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 PostTypePostTypeId
 PTQuestion
PostsParentIdCreationDate
1. This table or related slice is empty.
VotesPostIdCreationDate
1. VO
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 PostPostId
 PO
 UserUserId
 This table or related slice is empty.
 VoteTypeVoteTypeId
 VTUpMod
2. VO
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 PostPostId
 PO
 UserUserId
 This table or related slice is empty.
 VoteTypeVoteTypeId
 VTUpMod
3. VO
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 PostPostId
 PO
 UserUserId
 This table or related slice is empty.
 VoteTypeVoteTypeId
 VTUpMod
CommentsPostId
1. This table or related slice is empty.

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