What is CVE-2020-20950?

CVE-2020-20950 is a medium-severity vulnerability in Apple Macos, classified under Use of a Broken or Risky Cryptographic Algorithm. CVSS score: 5.9/10. Published 2021-01-19.

How severe is CVE-2020-20950?

Medium severity. CVSS v3 base score is 5.9 out of 10.

Vulnerability in Apple Macos

CVE-2020-20950

Bleichenbacher's attack on PKCS #1 v1.5 padding for RSA in Microchip Libraries for Applications 2018-11-26 All up to 2018-11-26. The vulnerability can allow one to use Bleichenbacher's oracle attack to decrypt an encrypted ciphertext by making successive queries to the server using the vulnerable library, resulting in remote information disclosure.

Vulnerability class: POODLE (CVE-2014-3566)

EPSS: 0.009 (54.8th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 5.9 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N.

Affected products

Apple Macos
Ietf Public_key_cryptography_standards_\#1 — versions 1.5
Linux Linux_kernel
Microchip Microchip_libraries_for_applications
Microsoft Windows
N/a — versions n/a

Weakness classification (CWE)

CWE-327 — Use of a Broken or Risky Cryptographic Algorithm

References

cve@mitre.org (Technical Description, Third Party Advisory, x_refsource_MISC)
af854a3a-2127-422b-91ae-364da2661108 (Product, x_refsource_MISC)
cve@mitre.org (Product, x_refsource_MISC)
cve@mitre.org (Technical Description, Third Party Advisory, x_refsource_MISC)

Frequently asked questions

What is CVE-2020-20950?: CVE-2020-20950 is a medium-severity vulnerability in Apple Macos, classified under Use of a Broken or Risky Cryptographic Algorithm. CVSS score: 5.9/10. Published 2021-01-19.
How severe is CVE-2020-20950?: Medium severity. CVSS v3 base score is 5.9 out of 10.