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apply_corrections.py is very vulnerable to regex denial of service #359

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jesopo opened this issue Sep 9, 2019 · 0 comments
Open

apply_corrections.py is very vulnerable to regex denial of service #359

jesopo opened this issue Sep 9, 2019 · 0 comments
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bug Unexpected problem or unintended behavior

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@jesopo
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jesopo commented Sep 9, 2019

A user sharing a channel with you can do the following:

<jesopo> aaaaaaaaaaaaaaaa
<jesopo> s/(.*\w){16}//

and hang your weechat at 100% CPU
@weechatter weechatter added the bug Unexpected problem or unintended behavior label Sep 9, 2019
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@weechatter @jesopo