SB2017102506 - Race condition in xen (Alpine package)
Published: October 25, 2017
Security Bulletin ID
SB2017102506
Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Adjecent network
Highest impact
Denial of service
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) 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.
Remediation
Install update from vendor's website.
References
- https://git.alpinelinux.org/aports/commit/?id=777808728eee590185d5d0f60357c3e334fa40cd
- https://git.alpinelinux.org/aports/commit/?id=88fbbb90ca25cd6378753538feb327abf36a30ac
- https://git.alpinelinux.org/aports/commit/?id=91aea7ba80331c34e950b9ccb02e757d4471325c
- https://git.alpinelinux.org/aports/commit/?id=902758ce76df95964c0d12e7cea24d7013cecf81
- https://git.alpinelinux.org/aports/commit/?id=9e8bfa9f6da89fa610692d159505391749ab3bdf
- https://git.alpinelinux.org/aports/commit/?id=37a17c61fd9573ea51e77597bf4cd57b127d48ea
- https://git.alpinelinux.org/aports/commit/?id=ccc49b6e6d7e85267b83fd27bbbc66cd4c17417a