Security Bulletin: IBM Dynamic System Analysis (DSA) Preboot is affected by vulnerabilities in libtirpc (CVE-2018-14622 CVE-2018-14621)

Security Bulletin

Summary

IBM Dynamic System Analysis (DSA) Preboot has addressed the following vulnerabilities in libtirpc.

Vulnerability Details

CVEID: CVE-2018-14622
DESCRIPTION: Libtirpc is vulnerable to a denial of service, caused by a NULL pointer dereference in the rpc-based application. By flooding the applications with new connections, a remote attacker could exploit this vulnerability to exhaust the resources.
CVSS Base Score: 5.3
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/149185 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L)

CVEID: CVE-2018-14621
DESCRIPTION: Libtirpc is vulnerable to a denial of service, caused by an error in EMFILE case in svc_vc.c. By using poll rather than select, a local attacker could exploit this vulnerability to cause the application to enter into an infinite loop.
CVSS Base Score: 4
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/149184 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L)

Affected Products and Versions

Product	Affected Version
IBM Dynamic System Analysis (DSA) Preboot	9.6

Remediation/Fixes

Firmware fix versions are available on Fix Central: http://www.ibm.com/support/fixcentral/

Product	Fix Version
IBM Dynamic System Analysis (DSA) Preboot (ibm_fw_dsa_dsyte2z-9.65_anyos_32-64)	dsyte2z-9.65

Workarounds and Mitigations

None

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References

Complete CVSS v3 Guide
On-line Calculator v3

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Change History

23 April 2019: Initial version published

*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.

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Tips

Security Bulletin: IBM Dynamic System Analysis (DSA) Preboot is affected by vulnerabilities in libtirpc (CVE-2018-14622 CVE-2018-14621)