Security restrictions bypass in Xen - CVE-2018-12892
Published: June 29, 2018
Vulnerability identifier: #VU13522
CSH Severity: Low
CVSS v4: 6 [CVSS:4.0/AV:A/AC:L/AT:N/PR:H/UI:N/VC:N/VI:N/VA:N/SC:N/SI:N/SA:H]
CVE-ID: CVE-2018-12892
CWE-ID: CWE-264
Exploitation vector: Adjecent network
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows an adjacent attacker with administrative privileges to bypass security restrictions on the target system.
The vulnerability exists on x86 systems due to a flaw in libxl. An adjacent attacker can bypass the read-only restrictions on a SCSI disk image in certain cases.
Affected software
Xen
Debian Linux
Gentoo Linux
Opensuse
Fedora
xen (Alpine package)
xen
Debian Linux
Gentoo Linux
Opensuse
Fedora
xen (Alpine package)
xen
How to mitigate CVE-2018-12892
Install update from vendor's website.
xen (Alpine package) - update to 4.7.6-r0
xen - addressed in versions 4.9.2-6.fc27, 4.10.1-5.fc28
xen - addressed in versions 4.9.2-6.fc27, 4.10.1-5.fc28