CVE-2019-1547 is a medium-severity vulnerability in OpenSSL versions 1.0.2-1.0.2s, 1.1.0-1.1.0k, and 1.1.1-1.1.1c. It arises when applications use explicitly defined elliptic curve parameters without a co-factor, causing OpenSSL to revert to non-side-channel resistant code paths during ECDSA signature operations. An attacker with the ability to time numerous signature creations could potentially recover the full private key. This vulnerability has a CVSS score of 4.7, indicating a local attack vector with high attack complexity and high confidentiality impact. There is no public exploit code, active exploitation, or significant community discussion surrounding this CVE.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
>= 1.0.2, <= 1.0.2sCPE matchmatch criteria | cpe:2.3:a:openssl:openssl:*:*:*:*:*:*:*:* | ||
>= 1.1.0, <= 1.1.0kCPE matchmatch criteria | cpe:2.3:a:openssl:openssl:*:*:*:*:*:*:*:* | ||
>= 1.1.1, <= 1.1.1cCPE matchmatch criteria | cpe:2.3:a:openssl:openssl:*:*:*:*:*:*:*:* |
CVSS version used by this source: 3.1
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N
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The average CVE in this peer group has 0.4 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.