PyYAML-5.1.tar.gz: 3 vulnerabilities (highest severity is: 9.8)

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Vulnerable Library - PyYAML-5.1.tar.gz

YAML parser and emitter for Python

Library home page: https://files.pythonhosted.org/packages/9f/2c/9417b5c774792634834e730932745bc09a7d36754ca00acf1ccd1ac2594d/PyYAML-5.1.tar.gz

Path to dependency file: /requirements.txt

Path to vulnerable library: /requirements.txt

Found in HEAD commit: 245f12ecf6c7e5190473b72ff0af10149551df05

Vulnerabilities

CVE	Severity	CVSS	Dependency	Type	Fixed in (PyYAML version)	Remediation Possible**
CVE-2020-1747	Critical	9.8	PyYAML-5.1.tar.gz	Direct	pyyaml - 5.3.1	✅
CVE-2020-14343	Critical	9.8	PyYAML-5.1.tar.gz	Direct	PyYAML - 5.4	✅
CVE-2019-20477	Critical	9.8	PyYAML-5.1.tar.gz	Direct	5.2	✅

**In some cases, Remediation PR cannot be created automatically for a vulnerability despite the availability of remediation

Details

CVE-2020-1747

Vulnerable Library - PyYAML-5.1.tar.gz

YAML parser and emitter for Python

Library home page: https://files.pythonhosted.org/packages/9f/2c/9417b5c774792634834e730932745bc09a7d36754ca00acf1ccd1ac2594d/PyYAML-5.1.tar.gz

Path to dependency file: /requirements.txt

Path to vulnerable library: /requirements.txt

Dependency Hierarchy:

• ❌ PyYAML-5.1.tar.gz (Vulnerable Library)

Found in HEAD commit: 245f12ecf6c7e5190473b72ff0af10149551df05

Found in base branch: master

Vulnerability Details

A vulnerability was discovered in the PyYAML library in versions before 5.3.1, where it is susceptible to arbitrary code execution when it processes untrusted YAML files through the full_load method or with the FullLoader loader. Applications that use the library to process untrusted input may be vulnerable to this flaw. An attacker could use this flaw to execute arbitrary code on the system by abusing the python/object/new constructor.

Publish Date: 2020-03-24

URL: CVE-2020-1747

CVSS 3 Score Details (9.8)

Base Score Metrics:

• Exploitability Metrics:
  • Attack Vector: Network
  • Attack Complexity: Low
  • Privileges Required: None
  • User Interaction: None
  • Scope: Unchanged
• Impact Metrics:
  • Confidentiality Impact: High
  • Integrity Impact: High
  • Availability Impact: High

For more information on CVSS3 Scores, click here.

Suggested Fix

Type: Upgrade version

Origin: GHSA-6757-jp84-gxfx

Release Date: 2020-03-24

Fix Resolution: pyyaml - 5.3.1

⛑️ Automatic Remediation will be attempted for this issue.

CVE-2020-14343

Vulnerable Library - PyYAML-5.1.tar.gz

YAML parser and emitter for Python

Library home page: https://files.pythonhosted.org/packages/9f/2c/9417b5c774792634834e730932745bc09a7d36754ca00acf1ccd1ac2594d/PyYAML-5.1.tar.gz

Path to dependency file: /requirements.txt

Path to vulnerable library: /requirements.txt

Dependency Hierarchy:

• ❌ PyYAML-5.1.tar.gz (Vulnerable Library)

Found in HEAD commit: 245f12ecf6c7e5190473b72ff0af10149551df05

Found in base branch: master

Vulnerability Details

A vulnerability was discovered in the PyYAML library in versions before 5.4, where it is susceptible to arbitrary code execution when it processes untrusted YAML files through the full_load method or with the FullLoader loader. Applications that use the library to process untrusted input may be vulnerable to this flaw. This flaw allows an attacker to execute arbitrary code on the system by abusing the python/object/new constructor. This flaw is due to an incomplete fix for CVE-2020-1747.

Publish Date: 2021-02-09

URL: CVE-2020-14343

CVSS 3 Score Details (9.8)

Base Score Metrics:

• Exploitability Metrics:
  • Attack Vector: Network
  • Attack Complexity: Low
  • Privileges Required: None
  • User Interaction: None
  • Scope: Unchanged
• Impact Metrics:
  • Confidentiality Impact: High
  • Integrity Impact: High
  • Availability Impact: High

For more information on CVSS3 Scores, click here.

Suggested Fix

Type: Upgrade version

Origin: https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-14343

Release Date: 2021-02-09

Fix Resolution: PyYAML - 5.4

⛑️ Automatic Remediation will be attempted for this issue.

CVE-2019-20477

Vulnerable Library - PyYAML-5.1.tar.gz

YAML parser and emitter for Python

Library home page: https://files.pythonhosted.org/packages/9f/2c/9417b5c774792634834e730932745bc09a7d36754ca00acf1ccd1ac2594d/PyYAML-5.1.tar.gz

Path to dependency file: /requirements.txt

Path to vulnerable library: /requirements.txt

Dependency Hierarchy:

• ❌ PyYAML-5.1.tar.gz (Vulnerable Library)

Found in HEAD commit: 245f12ecf6c7e5190473b72ff0af10149551df05

Found in base branch: master

Vulnerability Details

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.

Publish Date: 2020-02-19

URL: CVE-2019-20477

CVSS 3 Score Details (9.8)

Base Score Metrics:

• Exploitability Metrics:
  • Attack Vector: Network
  • Attack Complexity: Low
  • Privileges Required: None
  • User Interaction: None
  • Scope: Unchanged
• Impact Metrics:
  • Confidentiality Impact: High
  • Integrity Impact: High
  • Availability Impact: High

For more information on CVSS3 Scores, click here.

Suggested Fix

Type: Upgrade version

Origin: https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-20477

Release Date: 2020-02-19

Fix Resolution: 5.2

⛑️ Automatic Remediation will be attempted for this issue.

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⛑️Automatic Remediation will be attempted for this issue.