vulnerability
Alpine Linux: CVE-2017-9526: libgcrypt Possible timing attack on EdDSA session key
| Severity | CVSS | Published | Added | Modified |
|---|---|---|---|---|
| 4 | (AV:N/AC:M/Au:N/C:P/I:N/A:N) | 2017-06-10 | 2017-08-30 | 2019-12-04 |
Severity
4
CVSS
(AV:N/AC:M/Au:N/C:P/I:N/A:N)
Published
2017-06-10
Added
2017-08-30
Modified
2019-12-04
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.
Solution
alpine-linux-upgrade-libgcrypt
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