Description
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.
Analysis and contextual insights are available on OpenCVE Cloud.
Remediation
No vendor fix or workaround currently provided.
Additional remediation guidance may be available on OpenCVE Cloud.
Tracking
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Advisories
| Source | ID | Title |
|---|---|---|
Debian DSA |
DSA-3880-1 | libgcrypt20 security update |
EUVD |
EUVD-2017-18457 | 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. |
Ubuntu USN |
USN-3347-1 | Libgcrypt vulnerabilities |
References
History
No history.
Status: PUBLISHED
Assigner: mitre
Published:
Updated: 2024-08-05T17:11:02.257Z
Reserved: 2017-06-10T00:00:00.000Z
Link: CVE-2017-9526
No data.
Status : Modified
Published: 2017-06-11T02:29:00.183
Modified: 2026-05-13T00:24:29.033
Link: CVE-2017-9526
OpenCVE Enrichment
No data.
Debian DSA
EUVD
Ubuntu USN