Input validation error in Xen - CVE-2014-8867
Published: December 1, 2014 / Updated: August 4, 2020
Vulnerability identifier: #VU33832
CSH Severity: Medium
CVSS v4: 6.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2014-8867
CWE-ID: CWE-20
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote non-authenticated attacker to perform a denial of service (DoS) attack.
The acceleration support for the "REP MOVS" instruction in Xen 4.4.x, 3.2.x, and earlier lacks properly bounds checking for memory mapped I/O (MMIO) emulated in the hypervisor, which allows local HVM guests to cause a denial of service (host crash) via unspecified vectors.
Affected software
Xen
Gentoo Linux
SUSE Linux
xen (Alpine package)
Gentoo Linux
SUSE Linux
xen (Alpine package)
How to mitigate CVE-2014-8867
Install update from vendor's website.
xen (Alpine package) - update to 4.4.1-r7
External References
- http://kb.juniper.net/InfoCenter/index?page=content&id=JSA10705
- http://lists.opensuse.org/opensuse-security-announce/2015-02/msg00005.html
- http://lists.opensuse.org/opensuse-security-announce/2015-02/msg00010.html
- http://rhn.redhat.com/errata/RHSA-2015-0783.html
- http://secunia.com/advisories/59949
- http://secunia.com/advisories/62672
- http://support.citrix.com/article/CTX200288
- http://support.citrix.com/article/CTX201794
- http://www.debian.org/security/2015/dsa-3140
- http://www.securityfocus.com/bid/71331
- http://xenbits.xenproject.org/xsa/advisory-112.html
- https://security.gentoo.org/glsa/201504-04