CVE-2020-25659
RSA decryption vulnerable to Bleichenbacher timing vulnerability
5.9
MEDIUM
CVSS 3.1
EPSS 0.76%
Description
python-cryptography 3.2 is vulnerable to Bleichenbacher timing attacks in the RSA decryption API, via timed processing of valid PKCS#1 v1.5 ciphertext.
How to fix CVE-2020-25659
To remediate CVE-2020-25659, upgrade the affected package to a fixed version below.
- Alpine/py3-cryptography—upgrade to 3.2.1-r0 or later
- —upgrade to 3.2.1-1 or later
- —upgrade to 3.2 or later
- —upgrade to 3.2.1 or later
Is CVE-2020-25659 being exploited?
Low — EPSS is 0.8%, meaning exploitation activity has not been observed at scale.
Affected packages (4)
- from 0, < 3.2.1-r0
- from 0, < 3.2.1-1
- from 0, < 3.2
- from 0, < 3.2.1
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 4.0 | — | CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N |
| osv | CVSS 3.1 | MEDIUM5.9 | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N |