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CVE-2020-10933

CVE-2020-10933

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

An issue was discovered in Ruby 2.5.x through 2.5.7, 2.6.x through 2.6.5, and 2.7.0. If a victim calls BasicSocket#read_nonblock(requested_size, buffer, exception: false), the method resizes the buffer to fit the requested size, but no data is copied. Thus, the buffer string provides the previous value of the heap. This may expose possibly sensitive data from the interpreter.

CVSS 5.3 · Medium · EPSS 2.5% · Fix available

Published
Updated

Stack: system

Affected products and versions

  • n/a

    Versions
    • n/a: Affected

    No fix published

  • ruby2.7 Debian:11

    Affected ranges
    • ECOSYSTEM: < 2.7.1-1

    Update to 2.7.1-1

  • ruby2.5 Ubuntu:18.04:LTS

    Versions
    • 2.5.0~preview1-1ubuntu2
    • 2.5.0-4ubuntu1
    • 2.5.0-4ubuntu4
    • 2.5.0-5ubuntu1
    • 2.5.0-6ubuntu1
    • 2.5.1-1ubuntu1
    • 2.5.1-1ubuntu1.1
    • 2.5.1-1ubuntu1.2
    • 2.5.1-1ubuntu1.4
    • 2.5.1-1ubuntu1.5
    • 2.5.1-1ubuntu1.6
    • 2.5.1-1ubuntu1.7
    Affected ranges
    • ECOSYSTEM: < 2.5.1-1ubuntu1.8

    Update to 2.5.1-1ubuntu1.8

  • ruby2.7 Ubuntu:20.04:LTS

    Versions
    • 2.7.0-1
    • 2.7.0-2
    • 2.7.0-3
    • 2.7.0-4
    • 2.7.0-4ubuntu1
    • 2.7.0-5ubuntu1
    • 2.7.0-5ubuntu1.1
    • 2.7.0-5ubuntu1.2
    Affected ranges
    • ECOSYSTEM: < 2.7.0-5ubuntu1.3

    Update to 2.7.0-5ubuntu1.3

Original sources

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