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CVE-2018-14642

CVE-2018-14642

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

An information leak vulnerability was found in Undertow. If all headers are not written out in the first write() call then the code that handles flushing the buffer will always write out the full contents of the writevBuffer buffer, which may contain data from previous requests.

CVSS 5.3 · Medium · EPSS 2.1% · Fix available

Published
Updated

Stack: system

Affected products and versions

  • undertow

    Versions
    • n/a: Affected

    No fix published

  • undertow Debian:14

    Versions
    • 1.3.11-1
    • 1.3.16-1
    • 1.3.19-1
    • 1.3.21-1
    • 1.3.23-1
    • 1.3.4-1
    • 1.3.5-1
    • 1.3.7-1
    • 1.4.0-1
    • 1.4.1-1
    • 1.4.18-1
    • 1.4.20-1
    • 1.4.21-1
    • 1.4.21-2
    • 1.4.22-1
    • 1.4.23-1
    • 1.4.23-2
    • 1.4.23-3
    • 1.4.25-1
    • 1.4.25-2
    • 1.4.3-1
    • 1.4.4-1
    • 1.4.6-1
    • 1.4.7-1
    • 1.4.8-1
    Affected ranges
    • ECOSYSTEM: < 2.0.23-1

    Update to 2.0.23-1

  • undertow Ubuntu:Pro:16.04:LTS

    Versions
    • 1.3.4-1
    • 1.3.5-1
    • 1.3.7-1
    • 1.3.11-1
    • 1.3.16-1
    • 1.3.16-1ubuntu0.1~esm1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • undertow Ubuntu:Pro:18.04:LTS

    Versions
    • 1.4.20-1
    • 1.4.21-1
    • 1.4.22-1
    • 1.4.23-1
    • 1.4.23-2build1
    • 1.4.23-3
    • 1.4.23-3ubuntu0.1~esm1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • undertow Ubuntu:20.04:LTS

    Affected ranges
    • ECOSYSTEM: < 2.0.23-1

    Update to 2.0.23-1

  • undertow Ubuntu:Pro:24.04:LTS

    Versions
    • 2.3.8-2
    • 2.3.8-2ubuntu0.1~esm1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • undertow Ubuntu:25.10

    Versions
    • 2.3.18-1
    • 2.3.18-2
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • undertow Ubuntu:26.10

    Versions
    • 2.3.20-1ubuntu1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

  • undertow Ubuntu:26.04:LTS

    Versions
    • 2.3.18-2
    • 2.3.20-1
    • 2.3.20-1ubuntu1
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

Original sources

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