Memory corruption in Xen - CVE-2017-17563
Published: February 16, 2018
Vulnerability identifier: #VU10611
CSH Severity: Low
CVSS v4: 8.7 [CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2017-17563
CWE-ID: CWE-119
Exploitation vector: Adjecent network
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows an adjacent attacker to gain elevated privileges or cause a denial of service (DoS) condition on a targeted host system.
The weakness exists due to insufficient reference count overflow checking. An adjacent attacker can use a mask that is larger than the reference count that is set on a targeted system, trigger memory corruption and cause the hypervisor to crash or gain elevated privileges.
The weakness exists due to insufficient reference count overflow checking. An adjacent attacker can use a mask that is larger than the reference count that is set on a targeted system, trigger memory corruption and cause the hypervisor to crash or gain elevated privileges.
Affected software
Xen
Debian Linux
Gentoo Linux
SUSE Linux
Fedora
xen (Alpine package)
xen
IBM Systems Director
Debian Linux
Gentoo Linux
SUSE Linux
Fedora
xen (Alpine package)
xen
IBM Systems Director
How to mitigate CVE-2017-17563
Install update from vendor's website.
xen (Alpine package) - update to 4.6.6-r3
xen - addressed in versions 4.8.2-9.fc26, 4.9.1-4.fc27
xen - addressed in versions 4.8.2-9.fc26, 4.9.1-4.fc27
External References
Related Security Bulletins
- Multiple vulnerabilities in Xen
- Debian update for xen
- SUSE Linux update for xen
- OpenSUSE Linux update for xen
- SUSE Linux update for xen
- SUSE Linux update for xen
- SUSE Linux update for xen
- SUSE Linux update for xen
- SUSE Linux update for xen
- Memory corruption in xen (Alpine package)
- Gentoo update for Xen
- Fedora 27 update for xen
- Fedora 26 update for xen