Null pointer dereference in Xen - CVE-2017-10917
Published: July 13, 2017
Vulnerability identifier: #VU7503
CSH Severity: Low
CVSS v4: 8.2 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:H]
CVE-ID: CVE-2017-10917
CWE-ID: CWE-476
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a local attacker to cause DoS conditions.
The weakness exists due to improper validation of the port numbers of polled event channel ports. A local attacker can trigger NULL pointer dereference and cause the system to crash.
Successful exploitation of the vulnerability results in denial of service.
The weakness exists due to improper validation of the port numbers of polled event channel ports. A local attacker can trigger NULL pointer dereference and cause the system to crash.
Successful exploitation of the vulnerability results in denial of service.
Affected software
Xen
Gentoo Linux
Fedora
Opensuse
xen (Alpine package)
xen
Gentoo Linux
Fedora
Opensuse
xen (Alpine package)
xen
How to mitigate CVE-2017-10917
Install update from vendor's website.
xen (Alpine package) - update to 4.8.2-r0
xen - addressed in versions 4.6.5-7.fc24, 4.7.2-7.fc25, 4.8.1-4.fc26
xen - addressed in versions 4.6.5-7.fc24, 4.7.2-7.fc25, 4.8.1-4.fc26