VulnerabilityModified
CVE-2017-10917
Xen through 4.8.x does not validate the port numbers of polled event channel ports, which allows guest OS users to cause a denial of service (NULL pointer dereference and host OS crash) or possibly obtain sensitive information, aka XSA-221.
CRITICAL 9.1EPSS 2.57%
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (2.57%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
Xen through 4.8.x does not validate the port numbers of polled event channel ports, which allows guest OS users to cause a denial of service (NULL pointer dereference and host OS crash) or possibly obtain sensitive information, aka XSA-221.
- CVSS 3.0
- 9.1 CRITICALCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
- EPSS
- 2.57% probability · 84th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-476
- Affected
- xen/xen
- Source
- cve@mitre.org
References
- http://www.debian.org/security/2017/dsa-3969
- http://www.securityfocus.com/bid/99157
- http://www.securitytracker.com/id/1038731
- https://security.gentoo.org/glsa/201708-03
- https://xenbits.xen.org/xsa/advisory-221.htmlMailing List, Mitigation, Third Party Advisory
- http://www.debian.org/security/2017/dsa-3969
- http://www.securityfocus.com/bid/99157
- http://www.securitytracker.com/id/1038731
- https://security.gentoo.org/glsa/201708-03
- https://xenbits.xen.org/xsa/advisory-221.htmlMailing List, Mitigation, Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.