Vulnerability in Cryptography.io Cryptography
CVE-2020-25659
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.
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: 0.025 (84.2th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 84th percentile — 84.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.024 · newest: 0.025 · change: +0.000
Affected products
- Cryptography.io Cryptography — versions 3.2
- Oracle Communications Cloud Native Core Network Function Environment — versions 1.10.0
- Python-Cryptography — versions python-cryptography 3.2
Weakness classification (CWE)
Public proof-of-concept exploits
References
- github.com/pyca/cryptography/pull/5507/commits/ce1bef6f1ee06ac497ca0c837fbd1c7e… (Patch, Third Party Advisory)
- www.oracle.com/security-alerts/cpuapr2022.html (Patch, Third Party Advisory)
- www.oracle.com/security-alerts/cpujul2022.html (Patch, Third Party Advisory)
Frequently asked questions
- What is CVE-2020-25659?
- CVE-2020-25659 is a medium-severity vulnerability in Cryptography.io Cryptography, classified under CWE-385. CVSS score: 5.9/10. Published 2021-01-11.
- How severe is CVE-2020-25659?
- Medium severity. CVSS v3 base score is 5.9 out of 10.
- Is CVE-2020-25659 known to be exploited?
- 4 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.