A side-channel issue was discovered in Botan before 2.9.0. An attacker capable of precisely measuring the time taken for ECC key generation may be able to derive information about the high bits of the secret key, as the function to derive the public point from the secret scalar uses an unblinded Montgomery ladder whose loop iteration count depends on the bitlength of the secret. This issue affects only key generation, not ECDSA signatures or ECDH key agreement.
Metrics
Affected Vendors & Products
References
History
No history.
MITRE
Status: PUBLISHED
Assigner: mitre
Published: 2019-03-08T19:00:00
Updated: 2024-08-05T11:58:18.213Z
Reserved: 2018-12-17T00:00:00
Link: CVE-2018-20187
Vulnrichment
No data.
NVD
Status : Modified
Published: 2019-03-08T19:29:00.250
Modified: 2024-11-21T04:01:02.913
Link: CVE-2018-20187
Redhat
No data.