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CVE-2022-42916

CVE-2022-42916

This page contains facts from public vulnerability sources. Check the original advisory before updating.

In curl before 7.86.0, the HSTS check could be bypassed to trick it into staying with HTTP. Using its HSTS support, curl can be instructed to use HTTPS directly (instead of using an insecure cleartext HTTP step) even when HTTP is provided in the URL. This mechanism could be bypassed if the host name in the given URL uses IDN characters that get replaced with ASCII counterparts as part of the IDN conversion, e.g., using the character UTF-8 U+3002 (IDEOGRAPHIC FULL STOP) instead of the common ASCII full stop of U+002E (.). The earliest affected version is 7.77.0 2021-05-26.

CVSS 7.5 · High · EPSS 2.5% · Fix available

Published
Updated

Stack: system

Affected products and versions

  • n/a

    Versions
    • n/a: Affected

    No fix published

  • curl Debian:12

    Affected ranges
    • ECOSYSTEM: < 7.86.0-1

    Update to 7.86.0-1

  • curl Debian:13

    Affected ranges
    • ECOSYSTEM: < 7.86.0-1

    Update to 7.86.0-1

  • curl Debian:14

    Affected ranges
    • ECOSYSTEM: < 7.86.0-1

    Update to 7.86.0-1

  • curl Ubuntu:22.04:LTS

    Versions
    • 7.74.0-1.3ubuntu2
    • 7.74.0-1.3ubuntu3
    • 7.80.0-3
    • 7.81.0-1
    • 7.81.0-1ubuntu1.1
    • 7.81.0-1ubuntu1.2
    • 7.81.0-1ubuntu1.3
    • 7.81.0-1ubuntu1.4
    Affected ranges
    • ECOSYSTEM: < 7.81.0-1ubuntu1.6

    Update to 7.81.0-1ubuntu1.6

Original sources

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