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CVE-2019-20477
CVE information
Published
Last Modified
CVSSv2.0 Severity
CVSSv3.1 Severity
Impact Analysis
Description
PyYAML 5.1 through 5.1.2 has insufficient restrictions on the load and load_all functions because of a class deserialization issue, e.g., Popen is a class in the subprocess module. NOTE: this issue exists because of an incomplete fix for CVE-2017-18342..
CVSSv2.0 Score
- Severity
- High
- Base Score
- 7.5/10
- Exploit Score
- 10/10
- Access Vector
- Network
- Access Complexity
- Low
- Authentication Required
- None
- Impact Score
- 6.4/10
- Confidentiality Impact
- Partial
- Availability Impact
- Partial
- Integrity Impact
- Partial
CVSSv3.1 Score
- Severity
- Critical
- Base Score
- 9.8/10
- Exploit Score
- 3.9/10
- Access Vector
- Network
- Access Complexity
- Low
- Privileges Required
- None
- Impact Score
- 5.9/10
- Confidentiality Impact
- High
- Availability Impact
- High
- Integrity Impact
- High
- Scope
- Unchanged
- User Interaction
- None
Products Affected
| CPE | Affected | Vulnerable | Excluding | Edit |
|---|---|---|---|---|
| cpe:2.3:a:pyyaml:pyyaml:*:*:*:*:*:*:*:* |
Yes
|
5.1 | - | |
| cpe:2.3:o:fedoraproject:fedora:30:*:*:*:*:*:*:* |
Yes
|
- | - | |
| cpe:2.3:o:fedoraproject:fedora:31:*:*:*:*:*:*:* |
Yes
|
- | - |