CVE-2020-11735
MEDIUMCVSS 5.3/10EPSS 1.29%
Last modified
CVE-2020-11735 is a medium-severity vulnerability rated 5.3/10 on the CVSS scale. 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.". EPSS estimates a 1.29% chance of exploitation in the next 30 days.
Description
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."
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Wolfssl | Wolfssl | < 4.4.0 |
References
- https://github.com/wolfSSL/wolfssl/commit/1de07da61f0c8e9926dcbd68119f73230dae283fPatch, Third Party Advisory
- https://github.com/wolfSSL/wolfssl/releases/tag/v4.4.0-stableRelease Notes, Third Party Advisory
- https://github.com/wolfSSL/wolfssl/commit/1de07da61f0c8e9926dcbd68119f73230dae283fPatch, Third Party Advisory
- https://github.com/wolfSSL/wolfssl/releases/tag/v4.4.0-stableRelease Notes, Third Party Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is 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."
How severe is CVE-2020-11735?
CVE-2020-11735 has a CVSS score of 5.3/10 (MEDIUM severity). The EPSS model estimates a 1.29% probability of exploitation in the next 30 days.
How do I fix CVE-2020-11735?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
Are you affected by CVE-2020-11735?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST