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."

Medium severity · published Jun 25, 2020

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."

5.3

CVSS

1.3%

EPSS

On KEV

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

Attack vector

Network

Complexity

Low

Privileges

None

User interaction

None

Confidentiality

Low

Integrity

None

Availability

None

Scope

Unchanged

Exploitation

Is it being used?

Exploit prediction (EPSS)1.3% · higher than 70% of CVEs

Exploited in the wildNo evidence yet

CISA KEVNot listed

Ransomware campaign useNot known

Affected products

Which versions

Wolfssl · Wolfssl

before 4.4.0 · source: NVD

Affected product

Wolfssl

All Wolfssl CVEs

References

NVD

https://nvd.nist.gov/vuln/detail/CVE-2020-11735

CVE.org

https://www.cve.org/CVERecord?id=CVE-2020-11735

Patch

https://github.com/wolfSSL/wolfssl/commit/1de07da61f0c8e9926dcbd68119f73230dae283f

Release Notes

https://github.com/wolfSSL/wolfssl/releases/tag/v4.4.0-stable