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CVE-2021-32627

CVE-2021-32627 · Integer overflow issue with Streams in Redis

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

Redis is an open source, in-memory database that persists on disk. In affected versions an integer overflow bug in Redis can be exploited to corrupt the heap and potentially result with remote code execution. The vulnerability involves changing the default proto-max-bulk-len and client-query-buffer-limit configuration parameters to very large values and constructing specially crafted very large stream elements. The problem is fixed in Redis 6.2.6, 6.0.16 and 5.0.14. For users unable to upgrade an additional workaround to mitigate the problem without patching the redis-server executable is to prevent users from modifying the proto-max-bulk-len configuration parameter. This can be done using ACL to restrict unprivileged users from using the CONFIG SET command.

CVSS 7.5 · High · EPSS 3.9% · Fix available

Published
Updated

Stack: system · database

Affected products and versions

  • redis

    Versions
    • >= 5.0.0, < 5.0.14: Affected
    • >= 6.0.0, < 6.0.16: Affected
    • >= 6.2.0, < 6.2.6: Affected

    No fix published

  • redis Debian:12

    Affected ranges
    • ECOSYSTEM: < 5:6.0.16-1

    Update to 5:6.0.16-1

  • redis Debian:13

    Affected ranges
    • ECOSYSTEM: < 5:6.0.16-1

    Update to 5:6.0.16-1

  • redis Debian:14

    Affected ranges
    • ECOSYSTEM: < 5:6.0.16-1

    Update to 5:6.0.16-1

  • redis Ubuntu:Pro:18.04:LTS

    Versions
    • 4:4.0.1-7
    • 4:4.0.2-6
    • 4:4.0.2-9
    • 5:4.0.5-1
    • 5:4.0.6-1
    • 5:4.0.6-2
    • 5:4.0.7-1
    • 5:4.0.8-1
    • 5:4.0.8-2
    • 5:4.0.9-1
    • 5:4.0.9-1ubuntu0.1
    • 5:4.0.9-1ubuntu0.2
    • 5:4.0.9-1ubuntu0.2+esm2
    Affected ranges
    • ECOSYSTEM: < 5:4.0.9-1ubuntu0.2+esm3

    Update to 5:4.0.9-1ubuntu0.2+esm3

  • redis Ubuntu:Pro:20.04:LTS

    Versions
    • 5:5.0.5-2build1
    • 5:5.0.6-1
    • 5:5.0.7-1
    • 5:5.0.7-2
    • 5:5.0.7-2ubuntu0.1~esm1
    • 5:5.0.7-2ubuntu0.1
    Affected ranges
    • ECOSYSTEM: < 5:5.0.7-2ubuntu0.1+esm1

    Update to 5:5.0.7-2ubuntu0.1+esm1

Original sources

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