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nvd[email protected]NVD:CVE-2020-14343
HistoryFeb 09, 2021 - 9:15 p.m.

CVE-2020-14343

2021-02-0921:15:12
CWE-20
web.nvd.nist.gov
8
vulnerability
pyyaml
arbitrary code execution
untrusted input
cve-2020-14343
full_load method
fullloader loader
python/object/new constructor
incomplete fix

CVSS2

10

Attack Vector

NETWORK

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

COMPLETE

Integrity Impact

COMPLETE

Availability Impact

COMPLETE

AV:N/AC:L/Au:N/C:C/I:C/A:C

CVSS3

9.8

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS

0.006

Percentile

77.9%

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.

Affected configurations

Nvd
Node
pyyamlpyyamlRange5.15.4
Node
oraclecommunications_cloud_native_core_network_function_cloud_native_environmentMatch1.10.0
OR
oraclecommunications_cloud_native_core_network_function_cloud_native_environmentMatch22.1.0
VendorProductVersionCPE
pyyamlpyyaml*cpe:2.3:a:pyyaml:pyyaml:*:*:*:*:*:*:*:*
oraclecommunications_cloud_native_core_network_function_cloud_native_environment1.10.0cpe:2.3:a:oracle:communications_cloud_native_core_network_function_cloud_native_environment:1.10.0:*:*:*:*:*:*:*
oraclecommunications_cloud_native_core_network_function_cloud_native_environment22.1.0cpe:2.3:a:oracle:communications_cloud_native_core_network_function_cloud_native_environment:22.1.0:*:*:*:*:*:*:*

CVSS2

10

Attack Vector

NETWORK

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

COMPLETE

Integrity Impact

COMPLETE

Availability Impact

COMPLETE

AV:N/AC:L/Au:N/C:C/I:C/A:C

CVSS3

9.8

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS

0.006

Percentile

77.9%