SB2017100216 - SUSE Linux update for xen
Published: October 2, 2017
Security Bulletin ID
SB2017100216
Severity
Low
Patch available
YES
Number of vulnerabilities
3
Exploitation vector
Adjecent network
Highest impact
Code execution
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 3 secuirty vulnerabilities.
1) Out-of-bounds write (CVE-ID: CVE-2017-14316)
The vulnerability allows an adjacent attacker to execute arbitrary code on the host system.The weakness exists due to out-of-bounds array access in the processing of NUMA node parameters. An adjacent attacker can invoke specially crafted hypercalls and execute arbitrary code with elevated privileges.
2) Race condition (CVE-ID: CVE-2017-14317)
The vulnerability allows an adjacent attacker to cause DoS condition on the host system.The weakness exists due to race condition in cxenstored. An adjacent attacker can shut down a virtual machine with a stubdomain, trigger a double-free memory error and cause the xenstored daemon to crash.
The vulnerability is exploitable on the systems running the C version os xenstored ("xenstored") and running devicemodel stubdomains.
3) Privilege escalation (CVE-ID: CVE-2017-14319)
The vulnerability allows an adjacent attacker to gain elevated privileges or cause DoS condition on the host system.The weakness exists due to a flaw in grant unmapping. A local attacker on an x86 PV guest system can gain elevated privileges on the host system or cause the hypervisor to crash.
Remediation
Install update from vendor's website.