Security Bulletin
Summary
PowerKVM is affected by vulnerabilities in the Linux kernel . IBM has now addressed these vulnerabilities.
Vulnerability Details
CVEID: CVE-2017-12153
DESCRIPTION: Linux Kernel is vulnerable to a denial of service, caused by a NULL pointer dereference in the nl80211_set_rekey_data() function in net/wireless/nl80211.c. A local authenticated attacker could exploit this vulnerability to cause the system to crash.
CVSS Base Score: 5.5
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/132478 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)
CVEID: CVE-2017-15265
DESCRIPTION: Linux Kernel could allow a local attacker to gain elevated privileges on the system, caused by a use-after-free memory error in the ALSA sequencer interface (/dev/snd/seq). By persuading a victim to open a specially-crafted application, an attacker could exploit this vulnerability to execute arbitrary code on the system with elevated privileges.
CVSS Base Score: 7.8
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/133342 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H)
CVEID: CVE-2017-12193
DESCRIPTION: Linux Kernel is vulnerable to a denial of service, caused by a NULL pointer dereference in the assoc_array implementation. By sending a specially-crafted request, a local attacker could exploit this vulnerability to cause the system to crash.
CVSS Base Score: 5.5
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/134628 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)
CVEID: CVE-2017-7533
DESCRIPTION: Linux Kernel could allow a local attacker to gain elevated privileges on the system, caused by a race condition in inotify_handle_event() and vfs_rename() function. By using a specially-crafted application, an attacker could exploit this vulnerability to gain elevated privileges or cause a denial of service.
CVSS Base Score: 8.4
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/129919 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H)
Affected Products and Versions
PowerKVM v3.1
Remediation/Fixes
Customers can update PowerKVM systems by using "yum update".
Fix images are made available via Fix Central. See https://ibm.biz/BdHggw. This issue is addressed starting with v3.1.0.2 update 11.
Workarounds and Mitigations
none
Get Notified about Future Security Bulletins
References
Change History
19 October 2017 - 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.
Was this topic helpful?
Document Information
Modified date:
17 June 2018
UID
isg3T1025958