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)
Published · last modified .
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.
EPSS exploit prediction
EPSS: 0.009 (57.1th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 57th percentile — 57.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.009 · newest: 0.009 · change: 0.000
Affected products
Weakness classification (CWE)
References
- archiv.infsec.ethz.ch/education/fs08/secsem/bleichenbacher98.pdf (Technical Description, Third Party Advisory)
- af854a3a-2127-422b-91ae-364da2661108 (Product)
- www.microchip.com/mplab/microchip-libraries-for-applications (Product)
- bi-zone.medium.com/silence-will-fall-or-how-it-can-take-2-years-to-get-your-vul… (Technical Description, Third Party Advisory)
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.