cpython/Misc/NEWS.d/next/Security/2024-02-18-03-14-40.gh-issue-115398.tzvxH8.rst
Sebastian Pipping 6a95676bb5
gh-115398: Expose Expat >=2.6.0 reparse deferral API (CVE-2023-52425) (GH-115623)
Allow controlling Expat >=2.6.0 reparse deferral (CVE-2023-52425) by adding five new methods:

- `xml.etree.ElementTree.XMLParser.flush`
- `xml.etree.ElementTree.XMLPullParser.flush`
- `xml.parsers.expat.xmlparser.GetReparseDeferralEnabled`
- `xml.parsers.expat.xmlparser.SetReparseDeferralEnabled`
- `xml.sax.expatreader.ExpatParser.flush`

Based on the "flush" idea from https://github.com/python/cpython/pull/115138#issuecomment-1932444270 .

### Notes

- Please treat as a security fix related to CVE-2023-52425.

Includes code suggested-by: Snild Dolkow <snild@sony.com>
and by core dev Serhiy Storchaka.
2024-02-29 14:52:50 -08:00

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Allow controlling Expat >=2.6.0 reparse deferral (CVE-2023-52425) by adding
five new methods:
* ``xml.etree.ElementTree.XMLParser.flush``
* ``xml.etree.ElementTree.XMLPullParser.flush``
* ``xml.parsers.expat.xmlparser.GetReparseDeferralEnabled``
* ``xml.parsers.expat.xmlparser.SetReparseDeferralEnabled``
* ``xml.sax.expatreader.ExpatParser.flush``