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Fix potential security vulnerability in new variable parsing.

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This commit is contained in:
Starbeamrainbowlabs 2016-03-20 16:42:21 +00:00
parent f4ffa86394
commit 42b66729b7
3 changed files with 17 additions and 1 deletions
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8
build/index.php
View file

@ -3810,7 +3810,10 @@ class PeppermintParsedown extends ParsedownExtra
$variableValue = false;
if(isset(array_slice($this->paramStack, -1)[0][$variableKey]))
{
$variableValue = array_slice($this->paramStack, -1)[0][$variableKey];
$variableValue = $this->escapeText($variableValue);
}
if($variableValue)
{
@ -4013,6 +4016,11 @@ class PeppermintParsedown extends ParsedownExtra
];
}
protected function escapeText($text)
{
return htmlentities($text, ENT_COMPAT | ENT_HTML5);
}
/**
* Sets the base url to be used for internal links. '%s' will be replaced
* with a URL encoded version of the page name.

2
module_index.json
View file

@ -194,7 +194,7 @@
"author": "Emanuil Rusev & Starbeamrainbowlabs",
"description": "An upgraded (now default!) parser based on Emanuil Rusev's Parsedown Extra PHP library (https:\/\/github.com\/erusev\/parsedown-extra), which is licensed MIT. Please be careful, as this module adds a some weight to your installation, and also *requires* write access to the disk on first load.",
"id": "parser-parsedown",
"lastupdate": 1458491883,
"lastupdate": 1458492103,
"optional": false
}
]

8
modules/parser-parsedown.php
View file

@ -88,7 +88,10 @@ class PeppermintParsedown extends ParsedownExtra
$variableValue = false;
if(isset(array_slice($this->paramStack, -1)[0][$variableKey]))
{
$variableValue = array_slice($this->paramStack, -1)[0][$variableKey];
$variableValue = $this->escapeText($variableValue);
}
if($variableValue)
{
@ -291,6 +294,11 @@ class PeppermintParsedown extends ParsedownExtra
];
}
protected function escapeText($text)
{
return htmlentities($text, ENT_COMPAT | ENT_HTML5);
}
/**
* Sets the base url to be used for internal links. '%s' will be replaced
* with a URL encoded version of the page name.