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Security Bulletin: AIX is affected by multiple vulnerabilities due to Python (CVE-2023-43804, CVE-2023-37920)

Security Bulletin


Vulnerabilities in Python could allow a remote authenticated attacker to obtain sensitive information (CVE-2023-43804). AIX's Python packaging also includes Certifi, which is vulnerable to CVE-2023-37920. Python is used by AIX as part of Ansible node management automation.

Vulnerability Details

CVEID:   CVE-2023-43804
DESCRIPTION:   urllib3 could allow a remote authenticated attacker to obtain sensitive information, caused by a flaw with cookie request header not stripped during cross-origin redirects. By sending a specially crafted request, an attacker could exploit this vulnerability to obtain sensitive information, and use this information to launch further attacks against the affected system.
CVSS Base score: 5.9
CVSS Temporal Score: See: for the current score.
CVSS Vector: (CVSS:3.0/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:N)

CVEID:   CVE-2023-37920
DESCRIPTION:   An unspecified error with the removal of e-Tugra root certificate in Certifi has an unknown impact and attack vector.
CVSS Base score: 7.5
CVSS Temporal Score: See: for the current score.
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N)

Affected Products and Versions

Affected Product(s)Version(s)


The following fileset levels are vulnerable:

FilesetLower LevelUpper Level



A. Latest level of Python fileset is available from the web download site:


To find out whether the affected filesets are installed on your systems, refer to the lslpp command found in the AIX user's guide.


Example:  lslpp -L | grep -i python3.9.base





IBM strongly recommends addressing the vulnerability now.


A fix is available, and it can be downloaded from:


To extract the fixes from the tar file:

zcat python- | tar xvf -


IMPORTANT: If possible, it is recommended that a mksysb backup of the system be created.  Verify it is both bootable and readable before proceeding.


Note that all the previously reported security vulnerability fixes are also included in above mentioned fileset level.


To preview the fix installation:

installp -apYd . python3.9.base


To install the fix package:

installp -aXYd . python3.9.base


openssl dgst -sha256 -verify [pubkey_file] -signature [advisory_file].sig [advisory_file]

openssl dgst -sha256 -verify [pubkey_file] -signature [ifix_file].sig [ifix_file]


Published advisory OpenSSL signature file location:


Workarounds and Mitigations


Get Notified about Future Security Bulletins




Change History

21 Dec 2023: Initial Publication

*The CVSS Environment Score is customer environment specific and will ultimately impact the Overall CVSS Score. Customers can evaluate the impact of this vulnerability in their environments by accessing the links in the Reference section of this Security Bulletin.


According to the Forum of Incident Response and Security Teams (FIRST), the Common Vulnerability Scoring System (CVSS) is an "industry open standard designed to convey vulnerability severity and help to determine urgency and priority of response." IBM PROVIDES THE CVSS SCORES ""AS IS"" WITHOUT WARRANTY OF ANY KIND, INCLUDING THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. CUSTOMERS ARE RESPONSIBLE FOR ASSESSING THE IMPACT OF ANY ACTUAL OR POTENTIAL SECURITY VULNERABILITY. In addition to other efforts to address potential vulnerabilities, IBM periodically updates the record of components contained in our product offerings. As part of that effort, if IBM identifies previously unidentified packages in a product/service inventory, we address relevant vulnerabilities regardless of CVE date. Inclusion of an older CVEID does not demonstrate that the referenced product has been used by IBM since that date, nor that IBM was aware of a vulnerability as of that date. We are making clients aware of relevant vulnerabilities as we become aware of them. "Affected Products and Versions" referenced in IBM Security Bulletins are intended to be only products and versions that are supported by IBM and have not passed their end-of-support or warranty date. Thus, failure to reference unsupported or extended-support products and versions in this Security Bulletin does not constitute a determination by IBM that they are unaffected by the vulnerability. Reference to one or more unsupported versions in this Security Bulletin shall not create an obligation for IBM to provide fixes for any unsupported or extended-support products or versions.

Document Location


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Document Information

Modified date:
21 December 2023