CVE-2016-9377
published 2017-02-22CVE-2016-9377: Xen 4.5.x through 4.7.x on AMD systems without the NRip feature, when emulating instructions that generate software interrupts, allows local HVM guest OS users…
PriorityP418medium5.5CVSS 3.0
AVLACLPRLUINSUCNINAH
EPSS
0.39%
31.3th percentile
Xen 4.5.x through 4.7.x on AMD systems without the NRip feature, when emulating instructions that generate software interrupts, allows local HVM guest OS users to cause a denial of service (guest crash) by leveraging IDT entry miscalculation.
Affected
16 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| debian | xen | < xen 4.8.0-1 (bookworm) | xen 4.8.0-1 (bookworm) |
| xen | xen | — | — |
| xen | xen | — | — |
| xen | xen | — | — |
| xen | xen | — | — |
| xen | xen | — | — |
| xen | xen | — | — |
| xen | xen | — | — |
| xen | xen | — | — |
| xen | xen | — | — |
| xen | xen | — | — |
| xen | xen | — | — |
| xen | xen | >= 0 < 4.8.0-1 | 4.8.0-1 |
| xen | xen | >= 0 < 4.8.0-1 | 4.8.0-1 |
| xen | xen | >= 0 < 4.8.0-1 | 4.8.0-1 |
| xen | xen | >= 0 < 4.8.0-1 | 4.8.0-1 |
CVSS provenance
nvdv3.05.5MEDIUMCVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
nvdv2.02.1LOWAV:L/AC:L/Au:N/C:N/I:N/A:P
osv5.5MEDIUM
vendor_debian5.5MEDIUM
vendor_redhat5.5MEDIUM
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Red Hat
xen: x86 software interrupt injection mis-handled (XSA-196)
vendor_redhat·2016-11-22·CVSS 5.5
CVE-2016-9377 [MEDIUM] xen: x86 software interrupt injection mis-handled (XSA-196)
xen: x86 software interrupt injection mis-handled (XSA-196)
Xen 4.5.x through 4.7.x on AMD systems without the NRip feature, when emulating instructions that generate software interrupts, allows local HVM guest OS users to cause a denial of service (guest crash) by leveraging IDT entry miscalculation.
Package: xen (Red Hat Enterprise Linux 5) - Not affected
Debian
CVE-2016-9377: xen - Xen 4.5.x through 4.7.x on AMD systems without the NRip feature, when emulating ...
vendor_debian·2016·CVSS 5.5
CVE-2016-9377 [MEDIUM] CVE-2016-9377: xen - Xen 4.5.x through 4.7.x on AMD systems without the NRip feature, when emulating ...
Xen 4.5.x through 4.7.x on AMD systems without the NRip feature, when emulating instructions that generate software interrupts, allows local HVM guest OS users to cause a denial of service (guest crash) by leveraging IDT entry miscalculation.
Scope: local
bookworm: resolved (fixed in 4.8.0-1)
bullseye: resolved (fixed in 4.8.0-1)
forky: resolved (fixed in 4.8.0-1)
sid: resolved (fixed in 4.8.0-1)
trixie: resolved (fixed in 4.8.0-1)
GHSA
GHSA-27wj-6vjv-96mm: Xen 4
ghsa_unreviewed·2022-05-17
CVE-2016-9377 [MEDIUM] CWE-682 GHSA-27wj-6vjv-96mm: Xen 4
Xen 4.5.x through 4.7.x on AMD systems without the NRip feature, when emulating instructions that generate software interrupts, allows local HVM guest OS users to cause a denial of service (guest crash) by leveraging IDT entry miscalculation.
OSV
CVE-2016-9377: Xen 4
osv·2017-02-22·CVSS 5.5
CVE-2016-9377 [MEDIUM] CVE-2016-9377: Xen 4
Xen 4.5.x through 4.7.x on AMD systems without the NRip feature, when emulating instructions that generate software interrupts, allows local HVM guest OS users to cause a denial of service (guest crash) by leveraging IDT entry miscalculation.
No detection rules found.
No public exploits indexed.
Bugzilla
CVE-2016-9377 CVE-2016-9378 CVE-2016-9379 CVE-2016-9380 CVE-2016-9381 CVE-2016-9382 CVE-2016-9383 CVE-2016-9384 CVE-2016-9385 CVE-2016-9386 xen: various flaws [fedora-all]
bugzilla·2016-11-22·CVSS 5.5
CVE-2016-9377 [MEDIUM] CVE-2016-9377 CVE-2016-9378 CVE-2016-9379 CVE-2016-9380 CVE-2016-9381 CVE-2016-9382 CVE-2016-9383 CVE-2016-9384 CVE-2016-9385 CVE-2016-9386 xen: various flaws [fedora-all]
CVE-2016-9377 CVE-2016-9378 CVE-2016-9379 CVE-2016-9380 CVE-2016-9381 CVE-2016-9382 CVE-2016-9383 CVE-2016-9384 CVE-2016-9385 CVE-2016-9386 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.
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 chan
Bugzilla
CVE-2016-9377 CVE-2016-9378 xsa196 xen: x86 software interrupt injection mis-handled (XSA-196)
bugzilla·2016-11-08·CVSS 5.5
CVE-2016-9377 [MEDIUM] CVE-2016-9377 CVE-2016-9378 xsa196 xen: x86 software interrupt injection mis-handled (XSA-196)
CVE-2016-9377 CVE-2016-9378 xsa196 xen: x86 software interrupt injection mis-handled (XSA-196)
ISSUE DESCRIPTION
There are two closely-related bugs.
When Xen emulates instructions which generate software interrupts it
needs to perform a privilege check involving an IDT lookup. This
check is sometimes erroneously conducted as if the IDT had the format
for a 32-bit guest, when in fact it is in the 64-bit format. Xen will
then read the wrong part of the IDT and interpret it in an unintended
manner.
When Xen emulates instructions which generate software interrupts, and
chooses to deliver the software interrupt, it may try to use the
method intended for injecting exceptions. This is incorrect, and
results in a guest crash.
These instructions are not ususally handled by the emulator.
Exploi
http://www.securityfocus.com/bid/94475http://www.securitytracker.com/id/1037345http://xenbits.xen.org/xsa/advisory-196.htmlhttps://security.gentoo.org/glsa/201612-56http://www.securityfocus.com/bid/94475http://www.securitytracker.com/id/1037345http://xenbits.xen.org/xsa/advisory-196.htmlhttps://security.gentoo.org/glsa/201612-56
2017-02-22
Published