Security Bulletin
Summary
PowerKVM is affected by vulnerabilities in systemd. IBM has now addressed these vulnerabilities.
Vulnerability Details
CVEID: CVE-2018-16865
DESCRIPTION: systemd is vulnerable to a denial of service, caused by a memory corruption flaw when calling the alloca function. By sending specially-crafted command arguments, a local attacker could exploit this vulnerability to cause a denial of service.
CVSS Base Score: 6.2
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/155359 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:H)
CVEID: CVE-2018-16864
DESCRIPTION: systemd is vulnerable to a denial of service, caused by a memory corruption flaw when calling the syslog function. By sending specially-crafted command arguments, a local attacker could exploit this vulnerability to cause a denial of service.
CVSS Base Score: 6.2
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/155358 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:H)
CVEID: CVE-2018-15688
DESCRIPTION: systemd is vulnerable to a heap-based buffer overflow, caused by improper bounds checking by the dhcp6 client. By sending a specially-crafted request, a remote attacker could overflow a buffer and execute arbitrary code on the system.
CVSS Base Score: 7.3
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/152041 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L)
CVEID: CVE-2019-3815
DESCRIPTION: systemd is vulnerable to a denial of service, caused by a memory leak in the function dispatch_message_real() in journald-server.c. A local attacker could exploit this vulnerability to make systemd-journald crash.
CVSS Base Score: 4
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/156227 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)
CVEID: CVE-2019-6454
DESCRIPTION: systemd is vulnerable to a denial of service, caused by a flaw in the bus_process_object function in bus-objects.c. By sending a specially-crafted DBUS nessage, a local authenticated attacker could exploit this vulnerability to crash PID 1 and result in a subsequent kernel panic.
CVSS Base Score: 5.5
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/157193 for the current score
CVSS Environmental Score*: Undefined
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
PowerKVM 3.1
Remediation/Fixes
Customers can update PowerKVM systems by using "yum update".
Fix images are made available via Fix Central. For version 3.1, see https://ibm.biz/BdHggw. This issue is addressed starting with v3.1.0.2 update 17.
Workarounds and Mitigations
none
Get Notified about Future Security Bulletins
References
Change History
24 January 2019 - Initial Version
*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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Document Information
Modified date:
04 March 2019
UID
ibm10869078