CVE-2017-17566
published 2017-12-12CVE-2017-17566: An issue was discovered in Xen through 4.9.x allowing PV guest OS users to cause a denial of service (host OS crash) or gain host OS privileges in shadow mode…
PriorityP336high7.8CVSS 3.0
AVLACHPRLUINSCCHIHAH
EPSS
0.36%
28.0th percentile
An issue was discovered in Xen through 4.9.x allowing PV guest OS users to cause a denial of service (host OS crash) or gain host OS privileges in shadow mode by mapping a certain auxiliary page.
Affected
6 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| debian | xen | < xen 4.8.3+comet2+shim4.10.0+comet3-1+deb9u5 (bookworm) | xen 4.8.3+comet2+shim4.10.0+comet3-1+deb9u5 (bookworm) |
| xen | xen | <= 4.9.1 | — |
| xen | xen | >= 0 < 4.8.3+comet2+shim4.10.0+comet3-1+deb9u5 | 4.8.3+comet2+shim4.10.0+comet3-1+deb9u5 |
| xen | xen | >= 0 < 4.8.3+comet2+shim4.10.0+comet3-1+deb9u5 | 4.8.3+comet2+shim4.10.0+comet3-1+deb9u5 |
| xen | xen | >= 0 < 4.8.3+comet2+shim4.10.0+comet3-1+deb9u5 | 4.8.3+comet2+shim4.10.0+comet3-1+deb9u5 |
| xen | xen | >= 0 < 4.8.3+comet2+shim4.10.0+comet3-1+deb9u5 | 4.8.3+comet2+shim4.10.0+comet3-1+deb9u5 |
CVSS provenance
nvdv3.07.8HIGHCVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H
nvdv2.06.9MEDIUMAV:L/AC:M/Au:N/C:C/I:C/A:C
osv7.8HIGH
vendor_debian7.8HIGH
vendor_redhat7.8HIGH
Stop checking back — get the weekly exploitation signal.
Every Monday: what got weaponized or added to CISA KEV in the last seven days — each CVE cross-linked to its PoC, Nuclei template, and detection rule. Free, one email a week, unsubscribe in one click.
Red Hat
xen: x86 PV guests may gain access to internally used pages (XSA-248)
vendor_redhat·2017-12-12·CVSS 7.8
CVE-2017-17566 [HIGH] xen: x86 PV guests may gain access to internally used pages (XSA-248)
xen: x86 PV guests may gain access to internally used pages (XSA-248)
An issue was discovered in Xen through 4.9.x allowing PV guest OS users to cause a denial of service (host OS crash) or gain host OS privileges in shadow mode by mapping a certain auxiliary page.
Package: xen (Red Hat Enterprise Linux 5) - Will not fix
Debian
CVE-2017-17566: xen - An issue was discovered in Xen through 4.9.x allowing PV guest OS users to cause...
vendor_debian·2017·CVSS 7.8
CVE-2017-17566 [HIGH] CVE-2017-17566: xen - An issue was discovered in Xen through 4.9.x allowing PV guest OS users to cause...
An issue was discovered in Xen through 4.9.x allowing PV guest OS users to cause a denial of service (host OS crash) or gain host OS privileges in shadow mode by mapping a certain auxiliary page.
Scope: local
bookworm: resolved (fixed in 4.8.3+comet2+shim4.10.0+comet3-1+deb9u5)
bullseye: resolved (fixed in 4.8.3+comet2+shim4.10.0+comet3-1+deb9u5)
forky: resolved (fixed in 4.8.3+comet2+shim4.10.0+comet3-1+deb9u5)
sid: resolved (fixed in 4.8.3+comet2+shim4.10.0+comet3-1+deb9u5)
trixie: resolved (fixed in 4.8.3+comet2+shim4.10.0+comet3-1+deb9u5)
GHSA
GHSA-f7fj-gg64-5639: An issue was discovered in Xen through 4
ghsa_unreviewed·2022-05-13
CVE-2017-17566 [HIGH] GHSA-f7fj-gg64-5639: An issue was discovered in Xen through 4
An issue was discovered in Xen through 4.9.x allowing PV guest OS users to cause a denial of service (host OS crash) or gain host OS privileges in shadow mode by mapping a certain auxiliary page.
OSV
CVE-2017-17566: An issue was discovered in Xen through 4
osv·2017-12-12·CVSS 7.8
CVE-2017-17566 [HIGH] CVE-2017-17566: An issue was discovered in Xen through 4
An issue was discovered in Xen through 4.9.x allowing PV guest OS users to cause a denial of service (host OS crash) or gain host OS privileges in shadow mode by mapping a certain auxiliary page.
No detection rules found.
No public exploits indexed.
Bugzilla
CVE-2017-17563 CVE-2017-17564 CVE-2017-17565 CVE-2017-17566 xen: various flaws [fedora-all]
bugzilla·2017-12-12·CVSS 7.8
CVE-2017-17563 [HIGH] CVE-2017-17563 CVE-2017-17564 CVE-2017-17565 CVE-2017-17566 xen: various flaws [fedora-all]
CVE-2017-17563 CVE-2017-17564 CVE-2017-17565 CVE-2017-17566 xen: various flaws [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 supp
Bugzilla
CVE-2017-17566 xsa248 xen: x86 PV guests may gain access to internally used pages (XSA-248)
bugzilla·2017-11-29·CVSS 7.8
CVE-2017-17566 [HIGH] CVE-2017-17566 xsa248 xen: x86 PV guests may gain access to internally used pages (XSA-248)
CVE-2017-17566 xsa248 xen: x86 PV guests may gain access to internally used pages (XSA-248)
ISSUE DESCRIPTION
Memory management for PV guests builds on page ownership and page
attributes. A domain can always map, at least r/o, pages of which it
is the owner. Certain fields in the control structure of a page are
used for different purposes in the main PV memory management code and
in code handling shadow paging.
When a guest is running in shadow mode (which for PV guests is necessary
e.g. for live migration), certain auxiliary pages used by Xen internally
had their owner set to the guest itself. When the PV guest maps such a
page, shadow code and PV memory management code will disagree on the
meaning of said multi-purpose fields, generally leading to a crash of
the hypervisor.
IMPACT
A
http://www.openwall.com/lists/oss-security/2017/12/12/4http://www.securityfocus.com/bid/102167http://www.securitytracker.com/id/1040768https://lists.debian.org/debian-lts-announce/2018/01/msg00003.htmlhttps://lists.debian.org/debian-lts-announce/2018/10/msg00009.htmlhttps://security.gentoo.org/glsa/201801-14https://support.citrix.com/article/CTX232096https://www.debian.org/security/2018/dsa-4112https://xenbits.xen.org/xsa/advisory-248.htmlhttp://www.openwall.com/lists/oss-security/2017/12/12/4http://www.securityfocus.com/bid/102167http://www.securitytracker.com/id/1040768https://lists.debian.org/debian-lts-announce/2018/01/msg00003.htmlhttps://lists.debian.org/debian-lts-announce/2018/10/msg00009.htmlhttps://security.gentoo.org/glsa/201801-14https://support.citrix.com/article/CTX232096https://www.debian.org/security/2018/dsa-4112https://xenbits.xen.org/xsa/advisory-248.html
2017-12-12
Published