pyca/cryptography · Security
RSA decryption vulnerable to Bleichenbacher timing vulnerability
- GHSA ID
- GHSA-hggm-jpg3-v476
- CVE ID
- CVE-2020-25659
- Severity
- high
- Published
- Updated
- CVSS
- 5.9 · CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
- CVSS v3
- 5.9 · CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
- CVSS v4
- 8.2 · 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
Description
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.
CWEs
- CWE-385 · Covert Timing Channel
References
- https://github.com/pyca/cryptography/security/advisories/GHSA-hggm-jpg3-v476 ↗
- https://github.com/pyca/cryptography/commit/58494b41d6ecb0f56b7c5f05d5f5e3ca0320d494 ↗
- https://nvd.nist.gov/vuln/detail/CVE-2020-25659 ↗
- https://www.oracle.com/security-alerts/cpuapr2022.html ↗
- https://www.oracle.com/security-alerts/cpujul2022.html ↗
- https://github.com/pyca/cryptography/pull/5507 ↗
- https://github.com/advisories/GHSA-hggm-jpg3-v476 ↗
- https://github.com/pypa/advisory-database/tree/main/vulns/cryptography/PYSEC-2021-62.yaml ↗
- https://pypi.org/project/cryptography ↗