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[3.12] gh-115398: Expose Expat >=2.6.0 reparse deferral API (CVE-2023-52425) (GH-115623) #116248

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merged 4 commits into from
Mar 6, 2024
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[3.12] gh-115398: Expose Expat >=2.6.0 reparse deferral API (CVE-2023-52425) (GH-115623) #116248

merged 4 commits into from
Mar 6, 2024

Commits on Mar 2, 2024

  1. pythongh-115398: Expose Expat >=2.6.0 reparse deferral API (CVE-2023-… 

    …52425) (pythonGH-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 python#115138 (comment) .

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

Includes code suggested-by: Snild Dolkow <[email protected]>
and by core dev Serhiy Storchaka.

(cherry picked from commit 6a95676)
    @hartwork
    hartwork committed Mar 2, 2024
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Commits on Mar 3, 2024

  1. Adjust versionadded:: to be about 3.12.3, only 

    As suggested by Serhiy Storchaka
    @hartwork
    hartwork committed Mar 3, 2024
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Commits on Mar 6, 2024

  1. pythongh-115398: Suggest use of hasattr with checking for 3.13 Expa… 

    …t API availability (pythonGH-116278)

Suggest use of "hasattr" with checking for 3.13 Expat API availability

(cherry picked from commit 73807eb)
    @hartwork
    hartwork committed Mar 6, 2024
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  2. RESTify news API list. 

    (cherry picked from commit eda2963)
    @gpshead @hartwork
    gpshead authored and hartwork committed Mar 6, 2024
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