Security Bulletin: AIX is vulnerable to arbitrary code execution due to RPM (CVE-2023-7104)

Security Bulletin

Summary

Vulnerability in RPM could allow a remote authenticated attacker to execute arbitrary code (CVE-2023-7104). RPM is used by AIX for package management.

Vulnerability Details

CVEID: CVE-2023-7104
DESCRIPTION: SQLite SQLite3 is vulnerable to a heap-based buffer overflow, caused by improper bounds checking by the sessionReadRecord function in ext/session/sqlite3session.c. By sending a specially crafted request, a remote authenticated attacker could overflow a buffer and execute arbitrary code on the system.
CVSS Base score: 5.5
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/276235 for the current score.
CVSS Vector: (CVSS:3.0/AV:A/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L)

Affected Products and Versions

Affected Product(s)	Version(s)
AIX	7.2
AIX	7.3
VIOS	3.1
VIOS	4.1

The vulnerabilities in the following filesets are being addressed:

Fileset	Lower Level	Upper Level
rpm.rte	4.15.1.1000	4.15.1.1012
rpm.rte	4.15.1.2000	4.15.1.2010
rpm.rte	4.18.1.2000	4.18.1.2002

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

Example: lslpp -L | grep -i rpm.rte

Remediation/Fixes

FIXES

IBM strongly recommends addressing the vulnerability now.

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

https://www.ibm.com/resources/mrs/assets?source=aixbp

For 7.2 TL5 and VIOS 3.1:

rpm.rte.4.15.1.1013

For 7.3 TL0 and TL1:

rpm.rte.4.15.1.2011

For 7.3 TL2 and VIOS 4.1:

rpm.rte.4.18.1.2003

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 . rpm

To install the fix package:

installp -aXYd . rpm

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:

https://aix.software.ibm.com/aix/efixes/security/rpm_advisory2.asc.sig

Workarounds and Mitigations

None

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References

Complete CVSS v3 Guide
On-line Calculator v3

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Acknowledgement

Change History

24 Apr 2024: 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.

Disclaimer

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

Worldwide

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Tips

Security Bulletin: AIX is vulnerable to arbitrary code execution due to RPM (CVE-2023-7104)