CVE-2017-10917
published 2017-07-05CVE-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…
PriorityP341critical9.1CVSS 3.0
AVNACLPRNUINSUCHINAH
EPSS
2.57%
83.4th percentile
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.
Affected
6 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| debian | xen | < xen 4.8.1-1+deb9u3 (bookworm) | xen 4.8.1-1+deb9u3 (bookworm) |
| xen | xen | <= 4.8.1 | — |
| xen | xen | >= 0 < 4.8.1-1+deb9u3 | 4.8.1-1+deb9u3 |
| xen | xen | >= 0 < 4.8.1-1+deb9u3 | 4.8.1-1+deb9u3 |
| xen | xen | >= 0 < 4.8.1-1+deb9u3 | 4.8.1-1+deb9u3 |
| xen | xen | >= 0 < 4.8.1-1+deb9u3 | 4.8.1-1+deb9u3 |
CVSS provenance
nvdv3.09.1CRITICALCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
nvdv2.09.4CRITICALAV:N/AC:L/Au:N/C:C/I:N/A:C
osv9.1CRITICAL
vendor_debian9.1CRITICAL
vendor_redhat9.1CRITICAL
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GHSA
GHSA-v32f-p355-m49p: Xen through 4
ghsa_unreviewed·2022-05-17
CVE-2017-10917 [CRITICAL] CWE-476 GHSA-v32f-p355-m49p: Xen through 4
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.
OSV
CVE-2017-10917: Xen through 4
osv·2017-07-05·CVSS 9.1
CVE-2017-10917 [CRITICAL] CVE-2017-10917: Xen through 4
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.
Red Hat
xen: NULL pointer deref in event channel poll (XSA-221)
vendor_redhat·2017-06-20·CVSS 9.1
CVE-2017-10917 [CRITICAL] CWE-476 xen: NULL pointer deref in event channel poll (XSA-221)
xen: NULL pointer deref in event channel poll (XSA-221)
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.
Package: xen (Red Hat Enterprise Linux 5) - Not affected
Debian
CVE-2017-10917: xen - Xen through 4.8.x does not validate the port numbers of polled event channel por...
vendor_debian·2017·CVSS 9.1
CVE-2017-10917 [CRITICAL] CVE-2017-10917: xen - Xen through 4.8.x does not validate the port numbers of polled event channel por...
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.
Scope: local
bookworm: resolved (fixed in 4.8.1-1+deb9u3)
bullseye: resolved (fixed in 4.8.1-1+deb9u3)
forky: resolved (fixed in 4.8.1-1+deb9u3)
sid: resolved (fixed in 4.8.1-1+deb9u3)
trixie: resolved (fixed in 4.8.1-1+deb9u3)
No detection rules found.
No public exploits indexed.
Bugzilla
CVE-2017-10917 xen: xsa221 xen: NULL pointer deref in event channel poll (XSA-221) [fedora-all]
bugzilla·2017-06-20·CVSS 9.1
CVE-2017-10917 [CRITICAL] CVE-2017-10917 xen: xsa221 xen: NULL pointer deref in event channel poll (XSA-221) [fedora-all]
CVE-2017-10917 xen: xsa221 xen: NULL pointer deref in event channel poll (XSA-221) [fedora-all]
This is an automatically created tracking bug! It was created to ensure
that one or more security vulnerabilities are fixed in affected versions
of fedora-all.
For comments that are specific to the vulnerability please use bugs filed
against the "Security Response" product referenced in the "Blocks" field.
For more information see:
http://fedoraproject.org/wiki/Security/TrackingBugs
When submitting as an update, use the fedpkg template provided in the next
comment(s). This will include the bug IDs of this tracking bug as well as
the relevant top-level CVE bugs.
Please also mention the CVE IDs being fixed in the RPM changelog and the
fedpkg commit message.
NOTE: this issue affects multiple
Bugzilla
CVE-2017-10917 xsa221 xen: NULL pointer deref in event channel poll (XSA-221)
bugzilla·2017-06-05·CVSS 9.1
CVE-2017-10917 [CRITICAL] CVE-2017-10917 xsa221 xen: NULL pointer deref in event channel poll (XSA-221)
CVE-2017-10917 xsa221 xen: NULL pointer deref in event channel poll (XSA-221)
ISSUE DESCRIPTION
When polling event channels, in general arbitrary port numbers can be
specified. Specifically, there is no requirement that a polled event
channel ports has ever been created. When the code was generalised
from an earlier implementation, introducing some intermediate
pointers, a check should have been made that these intermediate
pointers are non-NULL. However, that check was omitted.
IMPACT
A malicious or buggy guest may cause the hypervisor to access
addresses it doesn't control, usually leading to a host crash (Denial
of Service). Information leaks cannot be excluded.
VULNERABLE SYSTEMS
Xen versions 4.4 and newer are vulnerable. Xen versions 4.3 and
earlier are not affected.
Both x86 a
http://www.debian.org/security/2017/dsa-3969http://www.securityfocus.com/bid/99157http://www.securitytracker.com/id/1038731https://security.gentoo.org/glsa/201708-03https://xenbits.xen.org/xsa/advisory-221.htmlhttp://www.debian.org/security/2017/dsa-3969http://www.securityfocus.com/bid/99157http://www.securitytracker.com/id/1038731https://security.gentoo.org/glsa/201708-03https://xenbits.xen.org/xsa/advisory-221.html
2017-07-05
Published