Buffer overflow in Citrix Xenserver
CVE-2017-12137
arch/x86/mm.c in Xen allows local PV guest OS users to gain host OS privileges via vectors related to map_grant_ref.
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.8 (High). Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.004 (35.5th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 36th percentile — 35.5% 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
- Citrix Xenserver — versions 6.0.2, 6.2.0, 6.5
- Xen
- Debian Linux — versions 8.0, 9.0
Weakness classification (CWE)
References
- support.citrix.com/article/CTX225941 (Patch, Third Party Advisory)
- www.openwall.com/lists/oss-security/2017/08/15/2 (mailing-list, Patch, Mailing List, Third Party Advisory, Mitigation)
- www.securitytracker.com/id/1039174 (VDB Entry, Third Party Advisory, vdb-entry)
- bugzilla.redhat.com/show_bug.cgi (Patch, Third Party Advisory, Issue Tracking)
- www.debian.org/security/2017/dsa-3969 (vendor-advisory, Third Party Advisory)
- security.gentoo.org/glsa/201801-14 (vendor-advisory, Third Party Advisory)
- www.securityfocus.com/bid/100342 (VDB Entry, Third Party Advisory, vdb-entry)
- xenbits.xen.org/xsa/advisory-227.html (Patch, Vendor Advisory)
Frequently asked questions
- What is CVE-2017-12137?
- CVE-2017-12137 is a high-severity vulnerability in Citrix Xenserver, classified under Buffer Copy without Checking Size of Input (Classic Buffer Overflow). CVSS score: 8.8/10. Published 2017-08-24.
- How severe is CVE-2017-12137?
- High severity. CVSS v3 base score is 8.8 out of 10.