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ReDoS in py library when used with subversion #10

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qxf2 opened this issue Oct 25, 2022 · 0 comments
Open

ReDoS in py library when used with subversion #10

qxf2 opened this issue Oct 25, 2022 · 0 comments

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@qxf2
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qxf2 commented Oct 25, 2022

The py library through 1.11.0 for Python allows remote attackers to conduct a ReDoS (Regular expression Denial of Service) attack via a Subversion repository with crafted info data, because the InfoSvnCommand argument is mishandled.

The particular codepath in question is the regular expression at py._path.svnurl.InfoSvnCommand.lspattern and is only relevant when dealing with subversion (svn) projects. Notablely the codepath is not used in the popular pytest project.
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