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Highest advisory severityMedium 1 vendor · 1 advisory

CVE-2021-3426

CVE-2021-3426: 1 tracked advisory record across Red Hat. Compare vendor sources and published fix guidance.

Compare the source-linked records below. Ratings and product/version details belong to each advisory; they are not a single CVE-wide score or proof that every listed product is affected. How VulniPulse collects and checks evidence.

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Vendor advisory comparison

Red Hat

1 advisory
  • Advisory severityMedium5.7

    Medium [CVE-2021-3426] There's a flaw in Python 3's pydoc

    CVE-2021-3426Source published Source updated

    There's a flaw in Python 3's pydoc. A local or adjacent attacker who discovers or is able to convince another local or adjacent user to start a pydoc server could access the server and use it to disclose sensitive information belonging to the other user that they would not normally be able to access. The highest risk of this flaw is to data confidentiality. This flaw affects Python versions before 3.8.9, Python versions before 3.9.3 and Python versions before 3.10.0a7. Red Hat Quay from version 3.4 uses Python from Red Hat Enterprise Linux RPM repositories and therefore may receive an update for this issue in a future release. Earlier versions of Red Hat Quay will not receive a patch for this issue. Python 2.x.x as shipped in any Red Hat product is not affected. This flaw is out of…

    Affected products in this advisory
    • Red Hat Enterprise Linux 8
    • Red Hat Software Collections for Red Hat Enterprise Linux 7.7 EUS
    • Red Hat Quay 3
    • Red Hat package: python3
    Source-reported affected versions
    • < 3.8.9
    • < 3.9.3
    • < 3.10.0a7
    • 3.10
    Source-reported fixed versions
    • python39:3.9-8050020210811100211.d428a79b
    • python39-devel:3.9-8050020210811100211.d428a79b
    • python38:3.8-8050020210811101222.e3d35cca
    • python38-devel:3.8-8050020210811101222.e3d35cca

    12 more entries in the full advisory.

    Mitigation guidance
    • Use the console (no argument needed) or HTML file (-w argument) output to generate docs rather than the HTTP server options. Put differently, do not use the -p or -n options of pydoc.
    Full advisory and evidenceOpen source bulletin

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