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Merge pull request #48 from SISheogorath/fix/graphvizXSS 

Fix stored XSS in the graphviz error message rendering
This commit is contained in:
Christoph (Sheogorath) Kern 2019-04-16 14:17:10 +02:00 committed by GitHub
parent 074198f941 fb399ebe73
commit 2df474b63e
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GPG Key ID: 4AEE18F83AFDEB23
2 changed files with 8 additions and 6 deletions
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1
package.json
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@ -37,6 +37,7 @@
"diff-match-patch": "git+https://github.com/hackmdio/diff-match-patch.git",
"ejs": "^2.5.5",
"emojify.js": "~1.1.0",
"escape-html": "^1.0.3",
"express": ">=4.14",
"express-session": "^1.14.2",
"file-saver": "^1.3.3",

13
public/js/extra.js
View File

@ -15,6 +15,7 @@ import hljs from 'highlight.js'
import PDFObject from 'pdfobject'
import S from 'string'
import { saveAs } from 'file-saver'
import escapeHTML from 'escape-html'
require('./lib/common/login')
require('../vendor/md-toc')
@ -323,7 +324,7 @@ export function finishView (view) {
svg[0].setAttribute('preserveAspectRatio', 'xMidYMid meet')
} catch (err) {
$value.unwrap()
$value.parent().append('<div class="alert alert-warning">' + err + '</div>')
$value.parent().append(`<div class="alert alert-warning">${escapeHTML(err)}</div>`)
console.warn(err)
}
})
@ -347,7 +348,7 @@ export function finishView (view) {
$value.children().unwrap().unwrap()
} catch (err) {
$value.unwrap()
$value.parent().append('<div class="alert alert-warning">' + err + '</div>')
$value.parent().append(`<div class="alert alert-warning">${escapeHTML(err)}</div>`)
console.warn(err)
}
})
@ -366,7 +367,7 @@ export function finishView (view) {
$value.children().unwrap().unwrap()
} catch (err) {
$value.unwrap()
$value.parent().append('<div class="alert alert-warning">' + err + '</div>')
$value.parent().append(`<div class="alert alert-warning">${escapeHTML(err)}</div>`)
console.warn(err)
}
})
@ -388,7 +389,7 @@ export function finishView (view) {
}
$value.unwrap()
$value.parent().append('<div class="alert alert-warning">' + errormessage + '</div>')
$value.parent().append(`<div class="alert alert-warning">${escapeHTML(errormessage)}</div>`)
console.warn(errormessage)
}
})
@ -408,7 +409,7 @@ export function finishView (view) {
svg[0].setAttribute('preserveAspectRatio', 'xMidYMid meet')
} catch (err) {
$value.unwrap()
$value.parent().append('<div class="alert alert-warning">' + err + '</div>')
$value.parent().append(`<div class="alert alert-warning">${escapeHTML(err)}</div>`)
console.warn(err)
}
})
@ -568,7 +569,7 @@ export function postProcess (code) {
if (warning && warning.length > 0) {
warning.text(md.metaError)
} else {
warning = $('<div id="meta-error" class="alert alert-warning">' + md.metaError + '</div>')
warning = $(`<div id="meta-error" class="alert alert-warning">${escapeHTML(md.metaError)}</div>`)
result.prepend(warning)
}
}