svnwc: fix regular expression vulnerable to DoS in blame functionality #257
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The subpattern `\d+\s*\S+` is ambiguous which makes the pattern subject to catastrophic backtracing given a string like `"1" * 5000`. SVN blame output seems to always have at least one space between the revision number and the user name, so the ambiguity can be fixed by changing the `*` to `+`. Fixes pytest-dev#256.
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Going to assume no one has an issue with this and merge. |
cclauss
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earthgecko
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IssueID #3694: #3874: SNYK-PYTHON-PY-1049546 Dependency vulnerability - py - CVE-2020-29651 #378 - Update py to 1.10.0 which resolves CVE-2020-29651 by implementing pytest-dev/py#257 which fixes pytest-dev/py#256 Modified: dev-requirements.txt requirements.txt
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Fixes #256.
The subpattern
\d+\s*\S+is ambiguous which makes the pattern subjectto catastrophic backtracing given a string like
"1" * 5000.SVN blame output seems to always have at least one space between the
revision number and the user name, so the ambiguity can be fixed by
changing the
*to+.