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CVE-2021-32773

CVE-2021-32773 · Confused deputy attack in sandbox module resolution

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

Racket is a general-purpose programming language and an ecosystem for language-oriented programming. In versions prior to 8.2, code evaluated using the Racket sandbox could cause system modules to incorrectly use attacker-created modules instead of their intended dependencies. This could allow system functions to be controlled by the attacker, giving access to facilities intended to be restricted. This problem is fixed in Racket version 8.2. A workaround is available, depending on system settings. For systems that provide arbitrary Racket evaluation, external sandboxing such as containers limit the impact of the problem. For multi-user evaluation systems, such as the `handin-server` system, it is not possible to work around this problem and upgrading is required.

CVSS 6.1 · Medium · EPSS 0.9% · Fix available

Published
Updated

Stack: system

Affected products and versions

  • racket

    Versions
    • < 8.2: Affected

    No fix published

  • racket Debian:12

    Affected ranges
    • ECOSYSTEM: < 7.9+dfsg1-2

    Update to 7.9+dfsg1-2

  • racket Debian:13

    Affected ranges
    • ECOSYSTEM: < 7.9+dfsg1-2

    Update to 7.9+dfsg1-2

  • racket Debian:14

    Affected ranges
    • ECOSYSTEM: < 7.9+dfsg1-2

    Update to 7.9+dfsg1-2

  • racket Ubuntu:16.04:LTS

    Versions
    • 6.2-2
    • 6.2-3
    • 6.3-1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • racket Ubuntu:18.04:LTS

    Versions
    • 6.9-2
    • 6.11+dfsg1-1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • racket Ubuntu:20.04:LTS

    Versions
    • 7.2+dfsg1-2ubuntu2
    • 7.2+dfsg1-2ubuntu3
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • racket Ubuntu:22.04:LTS

    Versions
    • 7.9+dfsg1-2build1
    • 8.2+dfsg1-2
    • 8.2+dfsg1-2ubuntu1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • racket Ubuntu:24.04:LTS

    Versions
    • 8.7+dfsg1-1
    • 8.10+dfsg1-2
    • 8.10+dfsg1-2ubuntu1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • racket Ubuntu:25.10

    Versions
    • 8.12+dfsg1-7ubuntu1
    • 8.16+dfsg1-3ubuntu2
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • racket Ubuntu:26.10

    Versions
    • 8.18+dfsg1-1ubuntu1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • racket Ubuntu:26.04:LTS

    Versions
    • 8.16+dfsg1-3ubuntu2
    • 8.18+dfsg1-1ubuntu1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

Original sources

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