Security Bulletin
Summary
The Apache Log4j vulnerabilities affect the z/Transaction Processing Facility (z/TPF) system and TPF Operations Server. Several Java applications on the z/TPF system depend on Apache Log4j capabilities. Additionally, the 64-bit Java support in TPF Operations Server uses Apache Log4j capabilities. All components in the z/TPF system and TPF Operations Server that use Apache Log4j have been updated to use Apache Log4j 2.17.1.
Vulnerability Details
CVEID: CVE-2021-45105
DESCRIPTION: Apache Log4j is vulnerable to a denial of service, caused by the failure to protect from uncontrolled recursion from self-referential lookups. A remote attacker with control over Thread Context Map (MDC) input data could craft malicious input data that contains a recursive lookup to cause a StackOverflowError that will terminate the process.
Note: The vulnerability is also called LOG4J2-3230.
CVSS Base score: 7.5
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/215647 for the current score.
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H)
CVEID: CVE-2021-45046
DESCRIPTION: Apache Log4j could result in remote code execution, caused by an incomplete fix of CVE-2021-44228 in certain non-default configurations. When the logging configuration uses a non-default Pattern Layout with a Context Lookup, an attacker with control over Thread Context Map (MDC) input data can craft malicious input data using a JNDI Lookup pattern to leak sensitive information and remote code execution in some environments and local code execution in all environments.
CVSS Base score: 9
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/215195 for the current score.
CVSS Vector: (CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H)
Affected Products and Versions
| Affected Product(s) | Version(s) |
|
z/Transaction Processing Facility ( z/TPF) | 1.1 |
| TPF Operations Server | 1.2.06 |
Remediation/Fixes
IBM strongly recommends addressing the vulnerability now.
| Product | VRMF | APAR | Remediation/Fix |
| z/TPF | 1.1 | PJ46693 |
Apply the APAR, which is available for download from the TPF Family Products: Maintenance for z/TPF & z/TPFDF web page. |
| TPF Operations Server | 1.2.06 | IT39522 |
Apply the APAR, which is available for download from the TPF Product Family: Maintenance for TPF Operations Server web page. |
Workarounds and Mitigations
None.
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References
Change History
07 Jan 2022: 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:
07 January 2022
Initial Publish date:
07 January 2022
UID
ibm16538936