Privilege escalation in Xen - CVE-2017-10913
Published: July 13, 2017
Vulnerability identifier: #VU7500
CSH Severity: Low
CVSS v4: 8.5 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2017-10913
CWE-ID: CWE-264
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a backend attacker to gain frontend privileges.
The weakness exists due to improper mapping of information in certain cases of concurrent unmap calls by the grant-table feature in Xen. A backend attacker can read arbitrary files on the system or gain frontend privileges.
Successful exploitation of the vulnerability results in privilege escalation.
The weakness exists due to improper mapping of information in certain cases of concurrent unmap calls by the grant-table feature in Xen. A backend attacker can read arbitrary files on the system or gain frontend privileges.
Successful exploitation of the vulnerability results in privilege escalation.
Affected software
Xen
Gentoo Linux
Fedora
Opensuse
xen (Alpine package)
xen
Gentoo Linux
Fedora
Opensuse
xen (Alpine package)
xen
How to mitigate CVE-2017-10913
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