CVE-2020-36242
CVSS V2 Medium 6.4
CVSS V3 Critical 9.1
Description
In the cryptography package before 3.3.2 for Python, certain sequences of update calls to symmetrically encrypt multi-GB values could result in an integer overflow and buffer overflow, as demonstrated by the Fernet class.
Overview
- CVE ID
- CVE-2020-36242
- Assigner
- cve@mitre.org
- Vulnerability Status
- Analyzed
- Published Version
- 2021-02-07T20:15:12
- Last Modified Date
- 2022-12-06T21:52:38
Weakness Enumerations
CPE Configuration (Product)
| CPE | Vulnerable | Operator | Version Start | Version End |
|---|---|---|---|---|
| cpe:2.3:a:cryptography_project:cryptography:*:*:*:*:*:python:*:* | 1 | OR | 3.3.2 | |
| cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:* | 1 | OR | ||
| cpe:2.3:a:oracle:communications_cloud_native_core_network_function_cloud_native_environment:1.10.0:*:*:*:*:*:*:* | 1 | OR |
CVSS Version 2
- Version
- 2.0
- Vector String
- AV:N/AC:L/Au:N/C:P/I:N/A:P
- Access Vector
- NETWORK
- Access Compatibility
- LOW
- Authentication
- NONE
- Confidentiality Impact
- PARTIAL
- Integrity Impact
- NONE
- Availability Impact
- PARTIAL
- Base Score
- 6.4
- Severity
- MEDIUM
- Exploitability Score
- 10
- Impact Score
- 4.9
CVSS Version 3
- Version
- 3.1
- Vector String
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
- Attack Vector
- NETWORK
- Attack Compatibility
- LOW
- Privileges Required
- NONE
- User Interaction
- NONE
- Scope
- UNCHANGED
- Confidentiality Impact
- HIGH
- Availability Impact
- HIGH
- Base Score
- 9.1
- Base Severity
- CRITICAL
- Exploitability Score
- 3.9
- Impact Score
- 5.2
References
| Reference URL | Reference Tags |
|---|---|
| https://github.com/pyca/cryptography/blob/master/CHANGELOG.rst | Release Notes Third Party Advisory |
| https://github.com/pyca/cryptography/compare/3.3.1...3.3.2 | Patch Third Party Advisory |
| https://github.com/pyca/cryptography/issues/5615 | Exploit Patch Third Party Advisory |
| https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/L7RGQLK4J5ZQFRLKCHVVG6BKZTUQMG7E/ | Mailing List Third Party Advisory |
| https://www.oracle.com/security-alerts/cpuapr2022.html | Patch Third Party Advisory |
| https://www.oracle.com/security-alerts/cpujul2022.html |
Sources
| Source Name | Source URL |
|---|---|
| NIST | https://nvd.nist.gov/vuln/detail/CVE-2020-36242 |
| MITRE | https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-36242 |
History
| Created | Old Value | New Value | Data Type | Notes |
|---|---|---|---|---|
| 2022-04-20 16:59:43 | Added to TrackCVE | |||
| 2022-12-05 21:31:51 | 2021-02-07T20:15Z | 2021-02-07T20:15:12 | CVE Published Date | updated |
| 2022-12-05 21:31:51 | 2022-07-25T18:15:29 | CVE Modified Date | updated | |
| 2022-12-05 21:31:51 | Undergoing Analysis | Vulnerability Status | updated | |
| 2022-12-05 21:31:55 | References | updated | ||
| 2022-12-06 22:12:12 | 2022-12-06T21:52:38 | CVE Modified Date | updated | |
| 2022-12-06 22:12:12 | Undergoing Analysis | Analyzed | Vulnerability Status | updated |