Buffer overflow in Xen
CVE-2015-8554
Buffer overflow in hw/pt-msi.c in Xen 4.6.x and earlier, when using the qemu-xen-traditional (aka qemu-dm) device model, allows local x86 HVM guest administrators to gain privileges by leveraging a system with access to a passed-through MSI-X capable physical PCI device and MSI-X table entries, related to a "write path."
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.0/AV:L/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.004 (31.6th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 32nd percentile — 31.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: 0.000
Affected products
Weakness classification (CWE)
References
- www.oracle.com/technetwork/topics/security/ovmbulletinjul2016-3090546.html
- www.securitytracker.com/id/1034481 (vdb-entry)
- xenbits.xen.org/xsa/advisory-164.html (Vendor Advisory)
- www.securityfocus.com/bid/79579 (vdb-entry)
- security.gentoo.org/glsa/201604-03 (vendor-advisory)
- support.citrix.com/article/CTX203879 (Vendor Advisory)
Frequently asked questions
- What is CVE-2015-8554?
- CVE-2015-8554 is a high-severity vulnerability in Xen, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 7.5/10. Published 2016-04-14.
- How severe is CVE-2015-8554?
- High severity. CVSS v3 base score is 7.5 out of 10.