Resource management error in Xen - CVE-2015-7969
Published: October 30, 2015 / Updated: August 9, 2020
Vulnerability identifier: #VU40619
CSH Severity: Medium
CVSS v4.0: 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/E:U/U:Green
CVE-ID: CVE-2015-7969
CWE-ID: CWE-399
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: Xen Project
Affected software:
Xen
Xen
Detailed vulnerability description
The vulnerability allows a remote non-authenticated attacker to perform a denial of service (DoS) attack.
Multiple memory leaks in Xen 4.0 through 4.6.x allow local guest administrators or domains with certain permission to cause a denial of service (memory consumption) via a large number of "teardowns" of domains with the vcpu pointer array allocated using the (1) XEN_DOMCTL_max_vcpus hypercall or the xenoprofile state vcpu pointer array allocated using the (2) XENOPROF_get_buffer or (3) XENOPROF_set_passive hypercall.
How to mitigate CVE-2015-7969
Install update from vendor's website.
Sources
- http://lists.fedoraproject.org/pipermail/package-announce/2015-November/171082.html
- http://lists.fedoraproject.org/pipermail/package-announce/2015-November/171185.html
- http://lists.fedoraproject.org/pipermail/package-announce/2015-November/171249.html
- http://lists.opensuse.org/opensuse-updates/2015-11/msg00063.html
- http://support.citrix.com/article/CTX202404
- http://www.debian.org/security/2015/dsa-3414
- http://www.securityfocus.com/bid/77364
- http://www.securitytracker.com/id/1034033
- http://xenbits.xen.org/xsa/advisory-149.html
- http://xenbits.xen.org/xsa/advisory-151.html
- https://security.gentoo.org/glsa/201604-03