Vulnerability Details : CVE-2020-11735
The private-key operations in ecc.c in wolfSSL before 4.4.0 do not use a constant-time modular inverse when mapping to affine coordinates, aka a "projective coordinates leak."
Products affected by CVE-2020-11735
- cpe:2.3:a:wolfssl:wolfssl:*:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2020-11735
0.07%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 29 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2020-11735
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
5.0
|
MEDIUM | AV:N/AC:L/Au:N/C:P/I:N/A:N |
10.0
|
2.9
|
NIST | |
|
5.3
|
MEDIUM | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N |
3.9
|
1.4
|
NIST |
CWE ids for CVE-2020-11735
-
The product behaves differently or sends different responses under different circumstances in a way that is observable to an unauthorized actor, which exposes security-relevant information about the state of the product, such as whether a particular operation was successful or not.Assigned by: nvd@nist.gov (Primary)
References for CVE-2020-11735
-
https://github.com/wolfSSL/wolfssl/releases/tag/v4.4.0-stable
Release wolfSSL Release 4.4.0 (04/22/2020) · wolfSSL/wolfssl · GitHubRelease Notes;Third Party Advisory
-
https://github.com/wolfSSL/wolfssl/commit/1de07da61f0c8e9926dcbd68119f73230dae283f
Constant time EC map to affine for private operations · wolfSSL/wolfssl@1de07da · GitHubPatch;Third Party Advisory
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