5.9
MEDIUM
CVE-2020-25659
Python-cryptography Bleichenbacher RSA Decryption Timing Attack
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.

INFO

Published Date :

Jan. 11, 2021, 4:15 p.m.

Last Modified :

Sept. 9, 2024, 1:52 p.m.

Remotely Exploitable :

Yes !

Impact Score :

3.6

Exploitability Score :

2.2
Public PoC/Exploit Available at Github

CVE-2020-25659 has a 3 public PoC/Exploit available at Github. Go to the Public Exploits tab to see the list.

Affected Products

The following products are affected by CVE-2020-25659 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

ID Vendor Product Action
1 Python-cryptography_project python-cryptography
1 Oracle communications_cloud_native_core_network_function_cloud_native_environment
1 Cryptography_project cryptography
1 Cryptography.io cryptography
References to Advisories, Solutions, and Tools

Here, you will find a curated list of external links that provide in-depth information, practical solutions, and valuable tools related to CVE-2020-25659.

URL Resource
https://github.com/pyca/cryptography/pull/5507/commits/ce1bef6f1ee06ac497ca0c837fbd1c7ef6c2472b Patch Third Party Advisory
https://www.oracle.com/security-alerts/cpuapr2022.html Patch Third Party Advisory
https://www.oracle.com/security-alerts/cpujul2022.html Patch Third Party Advisory

We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).

None

Java

Updated: 1 year ago
0 stars 1 fork 1 watcher
Born at : Oct. 30, 2023, 4:58 p.m. This repo has been linked 5 different CVEs too.

None

Updated: 1 year, 10 months ago
0 stars 0 fork 0 watcher
Born at : Dec. 15, 2022, 10:16 a.m. This repo has been linked 4 different CVEs too.

Command line client for quay/clair v4.x.x

clair clair-scanner docker security-tools security docker-security

Makefile Go

Updated: 2 years, 7 months ago
1 stars 0 fork 0 watcher
Born at : April 21, 2021, 7:48 p.m. This repo has been linked 6 different CVEs too.

Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2020-25659 vulnerability anywhere in the article.

The following table lists the changes that have been made to the CVE-2020-25659 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.

  • Reanalysis by [email protected]

    Sep. 09, 2024

    Action Type Old Value New Value
    Changed CPE Configuration OR *cpe:2.3:a:cryptography.io:cryptography:3.2:*:*:*:*:*:*:* OR *cpe:2.3:a:cryptography.io:cryptography:3.2:*:*:*:*:python:*:*
  • CPE Deprecation Remap by [email protected]

    Sep. 05, 2024

    Action Type Old Value New Value
    Changed CPE Configuration OR *cpe:2.3:a:python-cryptography_project:python-cryptography:3.2:*:*:*:*:*:*:* OR *cpe:2.3:a:cryptography.io:cryptography:3.2:*:*:*:*:*:*:*
  • CVE Modified by [email protected]

    May. 14, 2024

    Action Type Old Value New Value
  • Modified Analysis by [email protected]

    Feb. 09, 2023

    Action Type Old Value New Value
    Changed Reference Type https://www.oracle.com/security-alerts/cpujul2022.html No Types Assigned https://www.oracle.com/security-alerts/cpujul2022.html Patch, Third Party Advisory
  • CVE Modified by [email protected]

    Jul. 25, 2022

    Action Type Old Value New Value
    Added Reference https://www.oracle.com/security-alerts/cpujul2022.html [No Types Assigned]
  • Modified Analysis by [email protected]

    May. 12, 2022

    Action Type Old Value New Value
    Changed Reference Type https://www.oracle.com/security-alerts/cpuapr2022.html No Types Assigned https://www.oracle.com/security-alerts/cpuapr2022.html Patch, Third Party Advisory
    Added CWE NIST NVD-CWE-Other
    Added CPE Configuration OR *cpe:2.3:a:oracle:communications_cloud_native_core_network_function_cloud_native_environment:1.10.0:*:*:*:*:*:*:*
  • CVE Modified by [email protected]

    Apr. 20, 2022

    Action Type Old Value New Value
    Added Reference https://www.oracle.com/security-alerts/cpuapr2022.html [No Types Assigned]
  • Initial Analysis by [email protected]

    Jan. 19, 2021

    Action Type Old Value New Value
    Added CVSS V2 NIST (AV:N/AC:M/Au:N/C:P/I:N/A:N)
    Added CVSS V3.1 NIST AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
    Changed Reference Type https://github.com/pyca/cryptography/pull/5507/commits/ce1bef6f1ee06ac497ca0c837fbd1c7ef6c2472b No Types Assigned https://github.com/pyca/cryptography/pull/5507/commits/ce1bef6f1ee06ac497ca0c837fbd1c7ef6c2472b Patch, Third Party Advisory
    Added CPE Configuration OR *cpe:2.3:a:python-cryptography_project:python-cryptography:3.2:*:*:*:*:*:*:*
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2020-25659 is associated with the following CWEs:

Common Attack Pattern Enumeration and Classification (CAPEC)

Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2020-25659 weaknesses.

Exploit Prediction

EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.

0.13 }} -0.00%

score

0.49155

percentile

CVSS31 - Vulnerability Scoring System
Attack Vector
Attack Complexity
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Scope
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