Описание
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.
| Релиз | Статус | Примечание |
|---|---|---|
| bionic | ignored | end of standard support, was needed |
| cosmic | ignored | end of life |
| devel | DNE | |
| disco | not-affected | 2.9.0-2 |
| eoan | not-affected | 2.9.0-2 |
| esm-apps/bionic | needed | |
| esm-apps/focal | not-affected | 2.9.0-2 |
| esm-apps/jammy | not-affected | 2.9.0-2 |
| esm-apps/noble | not-affected | 2.9.0-2 |
| esm-infra-legacy/trusty | DNE |
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| Релиз | Статус | Примечание |
|---|---|---|
| bionic | not-affected | code not present |
| cosmic | ignored | end of life |
| devel | DNE | |
| disco | DNE | |
| eoan | DNE | |
| esm-apps/bionic | not-affected | code not present |
| esm-apps/xenial | not-affected | code not present |
| esm-infra-legacy/trusty | needs-triage | |
| esm-infra/focal | DNE | |
| focal | DNE |
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EPSS
4.3 Medium
CVSS2
5.9 Medium
CVSS3
Связанные уязвимости
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.
A side-channel issue was discovered in Botan before 2.9.0. An attacker ...
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.
EPSS
4.3 Medium
CVSS2
5.9 Medium
CVSS3