CVE-2018-20187
MEDIUM5.9EPSS 0.39%發布日:2019/3/8修改日:2025/11/19
也稱為:ALPINE-CVE-2018-20187DEBIAN-CVE-2018-20187
描述
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.
受影響套件(2)
- Alpine/botanfrom 0, < 2.9.0-r0
- Debian/botanfrom 0, < 2.9.0-2
CVSS 分數
| 來源 | 版本 | 嚴重程度 | 向量 |
|---|---|---|---|
| osv | CVSS 3.1 | MEDIUM5.9 | CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N |