Security Bulletin
Summary
Vulnerability found in glibc used by IBM OS Image for Red Hat Enterprise Linux shipped with Cloud Pak System (CVE-2020-27618). IBM Cloud Pak System addressed vulnerability shipped new base OS image based on Red Hat Enterprise Linux 8.4.
Vulnerability Details
DESCRIPTION: GNU C Library (aka glibc or libc6) is vulnerable to a denial of service, caused by an error when processing some invalid inputs from several IBM character sets in the iconv function. By sending invalid multi-byte input sequences in IBM1364, IBM1371, IBM1388, IBM1390, IBM1399 encodings, a local authenticated attacker could exploit this vulnerability to cause the application to enter into an infinite loop.
CVSS Base score: 5.5
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/196446 for the current score.
CVSS Vector: (CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H)
Affected Products and Versions
| Affected Product(s) | Version(s) |
| IBM OS Image for Red Hat Linux Systems | 3.0 |
Remediation/Fixes
For Cloud Pak System v2.3.0.1, v2.3.1.1, v.2.3.2.0, v2.3.3.0, v2.3.3.1, v.2.3.3.2, v2.3.3.3, v2.3.3.3 Interim Fix 1, upgrade to Cloud Pak System v2.3.3.4 at Fix Central.
Information on upgrading at: http://www.ibm.com/support/docview.wss?uid=ibm10887959
Workarounds and Mitigations
Get Notified about Future Security Bulletins
References
Change History
31 Jul 2022: Initial Publication
1 Aug 2022: Fixed typo
*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:
01 August 2022
UID
ibm16608642