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CVE-2019-1559

CVE-2019-1559 · 0-byte record padding oracle

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

This page shows selected source facts. See the linked advisories for the complete description and affected versions.

If an application encounters a fatal protocol error and then calls SSL_shutdown() twice (once to send a close_notify, and once to receive one) then OpenSSL can respond differently to the calling application if a 0 byte record is received with invalid padding compared to if a 0 byte record is received with an invalid MAC. If the application then behaves differently based on that in a way that is detectable to the remote peer, then this amounts to a padding oracle that could be used to decrypt data. In order for this to be exploitable "non-stitched" ciphersuites must be in use. Stitched ciphersuites are optimised implementations of certain commonly used ciphersuites. Also the application must call SSL_shutdown() twice even if a protocol error has occurred (applications should not do this but some do anyway). Fixed in OpenSSL 1.0.2r (Affected 1.0.2-1.0.2q).

CVSS 5.9 · Medium · EPSS 17.1% · Fix available

Published
Updated

Stack: system · network

Affected products and versions

  • openssl

    Versions
    • Fixed in OpenSSL 1.0.2r (Affected 1.0.2-1.0.2q): Affected

    No fix published

  • openssl Debian:12

    Affected ranges
    • ECOSYSTEM: < 1.1.0b-2

    Update to 1.1.0b-2

  • openssl Debian:13

    Affected ranges
    • ECOSYSTEM: < 1.1.0b-2

    Update to 1.1.0b-2

  • openssl Debian:14

    Affected ranges
    • ECOSYSTEM: < 1.1.0b-2

    Update to 1.1.0b-2

  • openssl Ubuntu:Pro:14.04:LTS

    Versions
    • 1.0.1e-3ubuntu1
    • 1.0.1e-4ubuntu1
    • 1.0.1e-4ubuntu2
    • 1.0.1e-4ubuntu3
    • 1.0.1e-4ubuntu4
    • 1.0.1f-1ubuntu1
    • 1.0.1f-1ubuntu2
    • 1.0.1f-1ubuntu2.1
    • 1.0.1f-1ubuntu2.2
    • 1.0.1f-1ubuntu2.3
    • 1.0.1f-1ubuntu2.4
    • 1.0.1f-1ubuntu2.5
    • 1.0.1f-1ubuntu2.7
    • 1.0.1f-1ubuntu2.8
    • 1.0.1f-1ubuntu2.11
    • 1.0.1f-1ubuntu2.12
    • 1.0.1f-1ubuntu2.15
    • 1.0.1f-1ubuntu2.16
    • 1.0.1f-1ubuntu2.17
    • 1.0.1f-1ubuntu2.18
    • 1.0.1f-1ubuntu2.19
    • 1.0.1f-1ubuntu2.20
    • 1.0.1f-1ubuntu2.21
    • 1.0.1f-1ubuntu2.22
    • 1.0.1f-1ubuntu2.23
    • 1.0.1f-1ubuntu2.24
    • 1.0.1f-1ubuntu2.25
    • 1.0.1f-1ubuntu2.26
    • 1.0.1f-1ubuntu2.27
    Affected ranges
    • ECOSYSTEM: < 1.0.1f-1ubuntu2.27+esm1

    Update to 1.0.1f-1ubuntu2.27+esm1

  • openssl Ubuntu:16.04:LTS

    Versions
    • 1.0.2d-0ubuntu1
    • 1.0.2d-0ubuntu2
    • 1.0.2e-1ubuntu1
    • 1.0.2f-2ubuntu1
    • 1.0.2g-1ubuntu2
    • 1.0.2g-1ubuntu3
    • 1.0.2g-1ubuntu4
    • 1.0.2g-1ubuntu4.1
    • 1.0.2g-1ubuntu4.2
    • 1.0.2g-1ubuntu4.4
    • 1.0.2g-1ubuntu4.5
    • 1.0.2g-1ubuntu4.6
    • 1.0.2g-1ubuntu4.8
    • 1.0.2g-1ubuntu4.9
    • 1.0.2g-1ubuntu4.10
    • 1.0.2g-1ubuntu4.11
    • 1.0.2g-1ubuntu4.12
    • 1.0.2g-1ubuntu4.13
    • 1.0.2g-1ubuntu4.14
    Affected ranges
    • ECOSYSTEM: < 1.0.2g-1ubuntu4.15

    Update to 1.0.2g-1ubuntu4.15

  • openssl1.0 Ubuntu:18.04:LTS

    Versions
    • 1.0.2n-1ubuntu2
    • 1.0.2n-1ubuntu3
    • 1.0.2n-1ubuntu4
    • 1.0.2n-1ubuntu5
    • 1.0.2n-1ubuntu5.1
    • 1.0.2n-1ubuntu5.2
    Affected ranges
    • ECOSYSTEM: < 1.0.2n-1ubuntu5.3

    Update to 1.0.2n-1ubuntu5.3

Original sources

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