Mend.io Vulnerability Database

What is a CVE vulnerability ID? icon What is a WS vulnerability ID? icon What is an MSC vulnerability ID? icon
New vulnerability? Tell us about it!
icon

We found results for “”

CVE-2020-25659

Good to know:

icon
icon

Date: January 11, 2021

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.

Language: Python

Severity Score

Related Resources (13)

https://github.com/advisories/GHSA-hggm-jpg3-v476
https://github.com/pyca/cryptography/commit/58494b41d6ecb0f56b7c5f05d5f5e3ca0320d494
https://github.com/pyca/cryptography/security/advisories/GHSA-hggm-jpg3-v476
https://access.redhat.com/security/cve/CVE-2020-25659
https://github.com/pyca/cryptography/pull/5507/commits/ce1bef6f1ee06ac497ca0c837fbd1c7ef6c2472b
https://nvd.nist.gov/vuln/detail/CVE-2020-25659
https://github.com/pyca/cryptography
https://github.com/pypa/advisory-database/tree/main/vulns/cryptography/PYSEC-2021-62.yaml
https://www.oracle.com/security-alerts/cpuapr2022.html
https://www.oracle.com/security-alerts/cpujul2022.html
https://github.com/pyca/cryptography/pull/5507
https://pypi.org/project/cryptography
https://www.mend.io/vulnerability-database/CVE-2020-25659

Severity Score

Weakness Type (CWE)

Covert Timing Channel

CWE-385

Top Fix

icon

Upgrade Version

Upgrade to version pypy3.7 - no_fix;dbxfs - 1.0.41;cryptography - 3.2;ovmf - no_fix;pypy3.6 - no_fix;wakatime - no_fix;privy - no_fix;pypy3.8 - 7.3.8;cryptography - 3.2

Learn More

CVSS v3.1

Base Score:
Attack Vector (AV): NETWORK
Attack Complexity (AC): HIGH
Privileges Required (PR): NONE
User Interaction (UI): NONE
Scope (S): UNCHANGED
Confidentiality (C): HIGH
Integrity (I): NONE
Availability (A): NONE

CVSS v2

Base Score:
Access Vector (AV): NETWORK
Access Complexity (AC): MEDIUM
Authentication (AU): NONE
Confidentiality (C): PARTIAL
Integrity (I): NONE
Availability (A): NONE
Additional information:

Do you need more information?

Contact Us