Security Bulletin
Summary
Samba is supported on IBM i. IBM i has addressed the applicable CVE.
Vulnerability Details
CVEID: CVE-2021-20254
DESCRIPTION: Samba could allow a remote authenticated attacker to bypass security restrictions, caused by a coding error when converting SIDs to gids. By sending a specially-crafted request, an attacker could exploit this vulnerability to cause incorrect group entries in the Samba file server process token, and allows unauthorized access to files
CVSS Base score: 6.8
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/201081 for the current score.
CVSS Vector: (CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N)
Affected Products and Versions
| Affected Product(s) | Version(s) |
| IBM i | 7.4 |
| IBM i | 7.3 |
| IBM i | 7.2 |
Remediation/Fixes
Release 7.3 – SI76293
Release 7.2 – SI76292
https://www.ibm.com/support/fixcentral/
Important note: IBM recommends that all users running unsupported versions of affected products upgrade to supported and fixed version of affected products.
Workarounds and Mitigations
None
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References
Change History
13 May 2021: 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
Review the IBM security bulletin disclaimer and definitions regarding your responsibilities for assessing potential impact of security vulnerabilities to your environment.
Document Location
Worldwide
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Document Information
Modified date:
13 May 2021
UID
ibm16452621