The IBM Verify Gateway (IVG) PAM components allow encryption of the client-secret property in the /etc/pam_ibm_auth.json file, but it's not the default configuration. Instead, customers must remember to add an --obfuscation command-line flag to encrypt the property. As of v1.0.1 of IVG for AIX PAM, and v1.0.2 of IVG for Linux PAM, the client-secret property is encrypted by default.
DESCRIPTION: IBM Verify Gateway (IVG) stores highly sensitive information in cleartext that could be obtained by a user.
CVSS Base score: 5.1
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/179004 for the current score.
CVSS Vector: (CVSS:3.0/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N)
Affected Products and Versions
|IBM Verify Gateway (IVG)||PAM 1.0.0, 1.0.1|
Log in to IBM X-Force Exchange / App Exchange and download and install the latest IBM Security Verify Gateway (renamed from IBM Verify Gateway) PAM components. Specifically:
- IBM Security Verify Gateway for AIX PAM (Pluggable Authentication Modules) v1.0.1 at https://exchange.xforce.ibmcloud.com/hub/extension/e506cf66c5f51340cef3e1b40e8b4840
- IBM Security Verify Gateway for Linux PAM (Pluggable Authentication Modules) v1.0.2 at https://exchange.xforce.ibmcloud.com/hub/extension/80eca9a1094b416db69dfff40eb10c5a
Workarounds and Mitigations
Add the --obf command-line flag when running /opt/ibm/ibm_auth/ibm_authd in order to generate an encrypted version of the client secret. Then, store the encrypted version in /etc/pam_ibm_auth.json by using the "obf-client-secret" parameter. For details, see the IBM Knowledge Center topic at https://www.ibm.com/support/knowledgecenter/en/SSCT62/com.ibm.iamservice.doc/references/r_verify_pam_ibmauthapi.html.
Get Notified about Future Security Bulletins
Jonathan Fitz-Gerald, John Zuccato, Rodney Ryan, Chris Shepherd, Nathan Roane, Kamil Sarbinowski, Vince Dragnea, Troy Fisher and Elaheh Samani from IBM X-Force Ethical Hacking Team
13 Jul 2020: 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.
Review the IBM security bulletin disclaimer and definitions regarding your responsibilities for assessing potential impact of security vulnerabilities to your environment.
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09 March 2021