Buffer overflow in Xen
CVE-2017-17563
An issue was discovered in Xen through 4.9.x allowing guest OS users to cause a denial of service (host OS crash) or gain host OS privileges by leveraging an incorrect mask for reference-count overflow checking in shadow mode.
Vulnerability class: Buffer Overflow
EPSS: 0.004 (27.8th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 7.8 (High). Vector: CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H.
Affected products
- Xen
- N/a — versions n/a
Weakness classification (CWE)
References
- cve@mitre.org (vdb-entry, x_refsource_BID)
- cve@mitre.org (vdb-entry, x_refsource_SECTRACK)
- cve@mitre.org (mailing-list, x_refsource_MLIST)
- cve@mitre.org (mailing-list, x_refsource_MLIST)
- cve@mitre.org (x_refsource_CONFIRM, Mailing List)
- cve@mitre.org (vendor-advisory, x_refsource_GENTOO)
- cve@mitre.org (x_refsource_CONFIRM, Patch, Mitigation, Vendor Advisory)
- cve@mitre.org (vendor-advisory, x_refsource_DEBIAN)
- cve@mitre.org (x_refsource_CONFIRM)
Frequently asked questions
- What is CVE-2017-17563?
- CVE-2017-17563 is a high-severity vulnerability in Xen, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 7.8/10. Published 2017-12-12.
- How severe is CVE-2017-17563?
- High severity. CVSS v3 base score is 7.8 out of 10.