Vulnerability CVE-2020-15523

Vulnerability Name:

CVE-2020-15523 (CCN-184610)

Assigned:

2017-03-10

Published:

2017-03-10

Updated:

2022-07-05

Summary:

In Python 3.6 through 3.6.10, 3.7 through 3.7.8, 3.8 through 3.8.4rc1, and 3.9 through 3.9.0b4 on Windows, a Trojan horse python3.dll might be used in cases where CPython is embedded in a native application. This occurs because python3X.dll may use an invalid search path for python3.dll loading (after Py_SetPath has been used).
Note: this issue CANNOT occur when using python.exe from a standard (non-embedded) Python installation on Windows.

CVSS v3 Severity:

7.8 High (CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H)
6.8 Medium (Temporal CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C)

Exploitability Metrics:	Attack Vector (AV): Local Attack Complexity (AC): Low Privileges Required (PR): None User Interaction (UI): Required
Scope:	Scope (S): Unchanged
Impact Metrics:	Confidentiality (C): High Integrity (I): High Availibility (A): High

7.8 High (CCN CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H)
6.8 Medium (CCN Temporal CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C)

Exploitability Metrics:	Attack Vector (AV): Local Attack Complexity (AC): Low Privileges Required (PR): None User Interaction (UI): Required
Scope:	Scope (S): Unchanged
Impact Metrics:	Confidentiality (C): High Integrity (I): High Availibility (A): High

CVSS v2 Severity:

6.9 Medium (CVSS v2 Vector: AV:L/AC:M/Au:N/C:C/I:C/A:C)

Exploitability Metrics:	Access Vector (AV): Local Access Complexity (AC): Medium Authentication (Au): None
Impact Metrics:	Confidentiality (C): Complete Integrity (I): Complete Availibility (A): Complete

6.8 Medium (CCN CVSS v2 Vector: AV:L/AC:L/Au:S/C:C/I:C/A:C)

Exploitability Metrics:	Access Vector (AV): Local Access Complexity (AC): Low Athentication (Au): Single_Instance
Impact Metrics:	Confidentiality (C): Complete Integrity (I): Complete Availibility (A): Complete

Vulnerability Type:

CWE-427
CWE-908

Vulnerability Consequences:

Gain Access

References:

Source: MITRE
Type: CNA
CVE-2020-15523

Source: CCN
Type: Python Issue29778
[CVE-2020-15523] _Py_CheckPython3 uses uninitialized dllpath when embedder sets module path with Py_SetPath

Source: MISC
Type: Issue Tracking, Patch, Vendor Advisory
https://bugs.python.org/issue29778

Source: XF
Type: UNKNOWN
python-cve202015523-code-exec(184610)

Source: MISC
Type: Patch, Third Party Advisory
https://github.com/python/cpython/pull/21297

Source: CONFIRM
Type: Issue Tracking, Patch, Third Party Advisory
https://security.netapp.com/advisory/ntap-20210312-0004/

Source: CCN
Type: IBM Security Bulletin 6830257 (Robotic Process Automation)
Multiple security vulnerabilities may affect IBM Robotic Process Automation for Cloud Pak

Source: CCN
Type: Python Web site
Python

Vulnerable Configuration:

Configuration 1:

cpe:/a:python:python:3.9.0:alpha1:*:*:*:*:*:*

OR cpe:/a:python:python:3.9.0:alpha2:*:*:*:*:*:*

OR cpe:/a:python:python:3.9.0:alpha3:*:*:*:*:*:*

OR cpe:/a:python:python:3.9.0:alpha4:*:*:*:*:*:*

OR cpe:/a:python:python:3.9.0:alpha5:*:*:*:*:*:*

OR cpe:/a:python:python:3.9.0:alpha6:*:*:*:*:*:*

OR cpe:/a:python:python:3.9.0:beta1:*:*:*:*:*:*

OR cpe:/a:python:python:3.9.0:beta2:*:*:*:*:*:*

OR cpe:/a:python:python:3.9.0:beta3:*:*:*:*:*:*

OR cpe:/a:python:python:*:*:*:*:*:*:*:* (Version >= 3.6.0 and < 3.6.12)

OR cpe:/a:python:python:3.9.0:beta4:*:*:*:*:*:*

OR cpe:/a:python:python:3.8.4:rc1:*:*:*:*:*:*

OR cpe:/a:python:python:*:*:*:*:*:*:*:* (Version >= 3.8.0 and < 3.8.4)

OR cpe:/a:python:python:*:*:*:*:*:*:*:* (Version >= 3.7.0 and < 3.7.9)

OR cpe:/a:python:python:*:*:*:*:*:*:*:* (Version >= 3.5.0 and < 3.5.10)

AND

cpe:/o:microsoft:windows:-:*:*:*:*:*:*:*

Configuration 2:

cpe:/a:netapp:snapcenter:-:*:*:*:*:*:*:*

Configuration CCN 1:

cpe:/a:python:python:3.7:*:*:*:*:*:*:*

OR cpe:/a:python:python:3.6.0:-:*:*:*:*:*:*

OR cpe:/a:python:python:3.8:*:*:*:*:*:*:*

OR cpe:/a:python:python:3.9:*:*:*:*:*:*:*

AND

cpe:/a:ibm:robotic_process_automation:21.0.1:*:*:*:*:*:*:*

OR cpe:/a:ibm:robotic_process_automation:21.0.2:*:*:*:*:*:*:*

OR cpe:/a:ibm:robotic_process_automation:21.0.3:*:*:*:*:*:*:*

OR cpe:/a:ibm:robotic_process_automation:21.0.4:*:*:*:*:*:*:*

Denotes that component is vulnerable

Oval Definitions

Definition ID	Class	Title	Last Modified
oval:org.opensuse.security:def:189	P	libpython3_9-1_0-3.9.4-2.9 on GA media (Moderate)	2022-06-13
oval:org.opensuse.security:def:113241	P	python310-3.10.0rc1-4.2 on GA media (Moderate)	2022-01-17
oval:org.opensuse.security:def:113316	P	python39-3.9.7-2.1 on GA media (Moderate)	2022-01-17
oval:org.opensuse.security:def:106726	P	Security update for python-Pygments (Important)	2021-10-20
oval:org.opensuse.security:def:106656	P	python310-3.10.0rc1-4.2 on GA media (Moderate)	2021-10-01
oval:org.opensuse.security:def:1118	P	Security update for rpm (Important)	2021-08-12
oval:org.opensuse.security:def:72761	P	python39-tools-3.9.4-2.9 on GA media (Moderate)	2021-08-09
oval:org.opensuse.security:def:62207	P	libpython3_9-1_0-3.9.4-2.9 on GA media (Moderate)	2021-08-09
oval:org.opensuse.security:def:1953	P	python39-tools-3.9.4-2.9 on GA media (Moderate)	2021-08-09
oval:org.opensuse.security:def:63042	P	python39-tools-3.9.4-2.9 on GA media (Moderate)	2021-08-09
oval:org.opensuse.security:def:71948	P	libpython3_9-1_0-3.9.4-2.9 on GA media (Moderate)	2021-08-09
oval:org.opensuse.security:def:100965	P	libpython3_9-1_0-3.9.4-2.9 on GA media (Moderate)	2021-08-09

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