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CVE-2017-9526

CVE-2017-9526

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

In Libgcrypt before 1.7.7, an attacker who learns the EdDSA session key (from side-channel observation during the signing process) can easily recover the long-term secret key. 1.7.7 makes a cipher/ecc-eddsa.c change to store this session key in secure memory, to ensure that constant-time point operations are used in the MPI library.

CVSS 5.9 · Medium · EPSS 2.3% · Fix available

Published
Updated

Stack: system

Affected products and versions

  • n/a

    Versions
    • n/a: Affected

    No fix published

  • libgcrypt20 Debian:12

    Affected ranges
    • ECOSYSTEM: < 1.7.6-2

    Update to 1.7.6-2

  • libgcrypt20 Debian:13

    Affected ranges
    • ECOSYSTEM: < 1.7.6-2

    Update to 1.7.6-2

  • libgcrypt20 Debian:14

    Affected ranges
    • ECOSYSTEM: < 1.7.6-2

    Update to 1.7.6-2

  • libgcrypt20 Ubuntu:16.04:LTS

    Versions
    • 1.6.3-2ubuntu1
    • 1.6.4-3
    • 1.6.4-4
    • 1.6.4-5
    • 1.6.5-2
    • 1.6.5-2ubuntu0.2
    Affected ranges
    • ECOSYSTEM: < 1.6.5-2ubuntu0.3

    Update to 1.6.5-2ubuntu0.3

Original sources

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