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.
02 / AFFECTED SOFTWARE
Affected packages
1 explicit affected versions
79 explicit affected versions
80 explicit affected versions
03 / CONNECTIONS
Connected vulnerabilities
04 / EVIDENCE
Source records
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.
RSA decryption was vulnerable to Bleichenbacher timing vulnerabilities, which would impact people using RSA decryption in online scenarios. This is fixed in cryptography 3.2.
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.
05 / REFERENCES
Further evidence
- https://github.com/pyca/cryptography/pull/5507/commits/ce1bef6f1ee06ac497ca0c837fbd1c7ef6c2472b
- https://www.oracle.com/security-alerts/cpuapr2022.html
- https://www.oracle.com/security-alerts/cpujul2022.html
- https://github.com/advisories/GHSA-hggm-jpg3-v476
- https://github.com/pyca/cryptography
- https://github.com/pyca/cryptography/commit/58494b41d6ecb0f56b7c5f05d5f5e3ca0320d494
- https://github.com/pyca/cryptography/pull/5507
- https://github.com/pyca/cryptography/security/advisories/GHSA-hggm-jpg3-v476
- https://github.com/pypa/advisory-database/tree/main/vulns/cryptography/PYSEC-2021-62.yaml
- https://nvd.nist.gov/vuln/detail/CVE-2020-25659
- https://pypi.org/project/cryptography