IBM SECURITY ADVISORY
First Issued: Wed Jan 31 13:51:19 CST 2024
The most recent version of this document is available here:
https://aix.software.ibm.com/aix/efixes/powersc/security/powersc_advisory.asc
Security Bulletin: Multiple vulnerabilities affect PowerSC and PowerSC MFA
===============================================================================
SUMMARY:
There are multiple vulnerabilities in PowerSC and PowerSC MFA.
===============================================================================
VULNERABILITY DETAILS:
CVEID: CVE-2023-50939
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-50939
DESCRIPTION: IBM PowerSC uses weaker than expected cryptographic
algorithms that could allow an attacker to decrypt highly sensitive
information.
CVSS Base score: 5.9
CVSS Temporal Score: See:
https://exchange.xforce.ibmcloud.com/vulnerabilities/275129
for the current score.
CVSS Vector: (CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N)
CVEID: CVE-2023-50326
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-50326
DESCRIPTION: IBM PowerSC uses an inadequate account lockout setting that
could allow a remote attacker to brute force account credentials.
CVSS Base score: 7.5
CVSS Temporal Score: See:
https://exchange.xforce.ibmcloud.com/vulnerabilities/275107
for the current score.
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N)
CVEID: CVE-2023-50325
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-50325
DESCRIPTION: IBM PowerSC uses Cross-Origin Resource Sharing (CORS) which
could allow an attacker to carry out privileged actions and retrieve
sensitive information as the domain name is not being limited to only
trusted domains.
CVSS Base score: 5.3
CVSS Temporal Score: See:
https://exchange.xforce.ibmcloud.com/vulnerabilities/275106
for the current score.
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N)
CVEID: CVE-2023-50933
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-50933
DESCRIPTION: IBM PowerSC is vulnerable to HTML injection. A remote
attacker could inject malicious HTML code, which when viewed, would
be executed in the victim's Web browser within the security context
of the hosting site.
CVSS Base score: 6.1
CVSS Temporal Score: See:
https://exchange.xforce.ibmcloud.com/vulnerabilities/275113
for the current score.
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N)
CVEID: CVE-2023-50937
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-105452
DESCRIPTION: IBM PowerSC uses weaker than expected cryptographic
algorithms that could allow an attacker to decrypt highly sensitive
information.
CVSS Base score: 5.9
CVSS Temporal Score: See:
https://exchange.xforce.ibmcloud.com/vulnerabilities/275117
for the current score.
CVSS Vector: (CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N)
CVEID: CVE-2023-50327
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-50327
DESCRIPTION: IBM PowerSC uses insecure HTTP methods which could allow a
remote attacker to perform unauthorized file request modification.
CVSS Base score: 5.3
CVSS Temporal Score: See:
https://exchange.xforce.ibmcloud.com/vulnerabilities/275109
for the current score.
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N)
CVEID: CVE-2023-50936
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-50936
DESCRIPTION: IBM PowerSC does not invalidate session after logout which
could allow an authenticated user to impersonate another user on the
system.
CVSS Base score: 6.3
CVSS Temporal Score: See:
https://exchange.xforce.ibmcloud.com/vulnerabilities/275116
for the current score.
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L)
CVEID: CVE-2023-50934
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-50934
DESCRIPTION: IBM PowerSC uses single-factor authentication which can lead
to unnecessary risk of compromise when compared with the benefits of
a dual-factor authentication scheme.
CVSS Base score: 5.3
CVSS Temporal Score: See:
https://exchange.xforce.ibmcloud.com/vulnerabilities/275114
for the current score.
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N)
CVEID: CVE-2023-50941
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-50941
DESCRIPTION: PowerSC does not provide logout functionality, which could
allow an authenticated user to gain access to an unauthorized user
using session fixation.
CVSS Base score: 6.3
CVSS Temporal Score: See:
https://exchange.xforce.ibmcloud.com/vulnerabilities/275131
for the current score.
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L)
CVEID: CVE-2023-50935
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-50935
DESCRIPTION: IBM PowerSC fails to properly restrict access to a URL or
resource, which may allow a remote attacker to obtain unauthorized
access to application functionality and/or resources.
CVSS Base score: 6.5
CVSS Temporal Score: See:
https://exchange.xforce.ibmcloud.com/vulnerabilities/275115
for the current score.
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N)
CVEID: CVE-2023-50938
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-50938
DESCRIPTION: IBM PowerSC could allow a remote attacker to hijack the
clicking action of the victim. By persuading a victim to visit a
malicious Web site, a remote attacker could exploit this
vulnerability to hijack the victim's click actions and possibly
launch further attacks against the victim.
CVSS Base score: 6.1
CVSS Temporal Score: See:
https://exchange.xforce.ibmcloud.com/vulnerabilities/275128
for the current score.
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N)
CVEID: CVE-2023-50328
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-50328
DESCRIPTION: IBM PowerSC may allow a remote attacker to view session
identifiers passed via URL query strings.
CVSS Base score: 3.7
CVSS Temporal Score: See:
https://exchange.xforce.ibmcloud.com/vulnerabilities/275110
for the current score.
CVSS Vector: (CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N)
CVEID: CVE-2023-50962
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-50962
DESCRIPTION: IBM PowerSC MFA does not implement the "HTTP Strict
Transport Security" (HSTS) web security policy mechanism.
CVSS Base score: 5.9
CVSS Temporal Score: See:
https://exchange.xforce.ibmcloud.com/vulnerabilities/276004
for the current score.
CVSS Vector: (CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N)
CVEID: CVE-2023-50940
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-50940
DESCRIPTION: IBM PowerSC uses Cross-Origin Resource Sharing (CORS) which
could allow an attacker to carry out privileged actions and retrieve
sensitive information as the domain name is not being limited to only
trusted domains.
CVSS Base score: 5.3
CVSS Temporal Score: See:
https://exchange.xforce.ibmcloud.com/vulnerabilities/275130
for the current score.
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N)
AFFECTED PRODUCTS AND VERSIONS:
PowerSC 1.3, 2.0, 2.1
The vulnerabilities in the following filesets are being addressed:
key_fileset = powerscStd.tnc_pm
Fileset Lower Level Upper Level KEY
---------------------------------------------------------------
powerscStd.uiServer 1.3.0.4 2.1.0.6 key_w_fs
powerscStd.uiAgent 1.3.0.4 2.1.0.6 key_w_fs
powerscMFA.server 1.3.0.4 2.1.0.6 key_w_fs
Note: To find out whether the affected PowerSC filesets are installed
on your systems, refer to the lslpp command found in AIX user's guide.
To find out whether the affected curl filesets are installed on your
systems, refer to the rpm command found in AIX user's guide.
Example: lslpp -l | grep powerscStd
REMEDIATION:
IBM strongly recommends addressing the vulnerabilities now.
Recommended remediation is to update to PowerSC 2.2:
https://www.ibm.com/support/fixcentral/swg/selectFixes?fixids=PowerSC-2.2.0.0&product=ibm%2Fpower%2FIBM%20PowerSC&source=dbluesearch&mhsrc=ibmsearch_a&mhq=PowerSC&function=fixId&parent=ibm/Other%20software
WORKAROUNDS AND MITIGATIONS:
None.
===============================================================================
CONTACT US:
Note: Keywords labeled as KEY in this document are used for parsing
purposes.
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please visit "My Notifications":
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https://ibm.com/support/
To obtain the OpenSSL public key that can be used to verify the
signed advisories and ifixes:
Download the key from our web page:
ftp://ftp.software.ibm.com/systems/power/AIX/systems_p_os_aix_security_pubkey.txt
Please contact your local IBM AIX support center for any
assistance.
REFERENCES:
Complete CVSS v3 Guide:
https://www.first.org/cvss/user-guide
On-line Calculator v3:
https://www.first.org/cvss/calculator/3.0
ACKNOWLEDGEMENTS:
None.
CHANGE HISTORY:
First Issued: Wed Jan 31 13:51:19 CST 2024
===============================================================================
*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.