High severity · published Jul 4, 2020
CVE-2020-15523
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…
7.8
CVSS
0.9%
EPSS
No
On KEV
Description
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 vector
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Attack vector
Local
Complexity
Low
Privileges
None
User interaction
Required
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.9% · higher than 61% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
PY
Python · Python
3.5.0 before 3.5.10; 3.6.0 before 3.6.12; 3.7.0 before 3.7.9; 3.8.0 before 3.8.4; 3.8.4; 3.9.0; +9 more · source: NVD
SN
Snapcenter · Netapp
All versions, or not specified · source: NVD
SS
SIMATIC S7-1500 CPU 1518-4 PN/DP MFP · Siemens
V3.1.0 before V3.1.5; V3.1.0 before V3.1.5 · source: CISA
SS
SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP · Siemens
V3.1.0 before V3.1.5; V3.1.0 before V3.1.5 · source: CISA
SS
SIPLUS S7-1500 CPU 1518-4 PN/DP MFP · Siemens
V3.1.0 before V3.1.5 · source: CISA
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2020-15523
CVE.org
https://www.cve.org/CVERecord?id=CVE-2020-15523
Issue Tracking
https://bugs.python.org/issue29778
Patch
https://github.com/python/cpython/pull/21297
Issue Tracking
https://security.netapp.com/advisory/ntap-20210312-0004/
cert-portal.siemens.com
https://cert-portal.siemens.com/productcert/html/ssa-398330.html
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