CVE-2014-8595
published 2014-11-19CVE-2014-8595: arch/x86/x86_emulate/x86_emulate.c in Xen 3.2.1 through 4.4.x does not properly check privileges, which allows local HVM guest users to gain privileges or…
PriorityP411low1.9CVSS 2.0
AVLACMAuNCNINAP
EPSS
0.41%
33.5th percentile
arch/x86/x86_emulate/x86_emulate.c in Xen 3.2.1 through 4.4.x does not properly check privileges, which allows local HVM guest users to gain privileges or cause a denial of service (crash) via a crafted (1) CALL, (2) JMP, (3) RETF, (4) LCALL, (5) LJMP, or (6) LRET far branch instruction.
Affected
38 ranges· showing 25
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| debian | debian_linux | — | — |
| debian | xen | < xen 4.4.1-4 (bookworm) | xen 4.4.1-4 (bookworm) |
| opensuse | opensuse | — | — |
| opensuse | opensuse | — | — |
| xen | xen | — | — |
| xen | xen | — | — |
| xen | xen | — | — |
| xen | xen | — | — |
| xen | xen | — | — |
| xen | xen | — | — |
| xen | xen | — | — |
| xen | xen | — | — |
| xen | xen | — | — |
| xen | xen | — | — |
| xen | xen | — | — |
| xen | xen | — | — |
| xen | xen | — | — |
| xen | xen | — | — |
| xen | xen | — | — |
| xen | xen | — | — |
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CVSS provenance
nvdv2.01.9LOWAV:L/AC:M/Au:N/C:N/I:N/A:P
osv1.9LOW
vendor_debian1.9LOW
vendor_redhat1.9LOW
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Red Hat
kernel: xen: Missing privilege level checks in x86 emulation of far branches (xsa110)
vendor_redhat·2014-11-18·CVSS 1.9
CVE-2014-8595 [LOW] CWE-862 kernel: xen: Missing privilege level checks in x86 emulation of far branches (xsa110)
kernel: xen: Missing privilege level checks in x86 emulation of far branches (xsa110)
arch/x86/x86_emulate/x86_emulate.c in Xen 3.2.1 through 4.4.x does not properly check privileges, which allows local HVM guest users to gain privileges or cause a denial of service (crash) via a crafted (1) CALL, (2) JMP, (3) RETF, (4) LCALL, (5) LJMP, or (6) LRET far branch instruction.
Statement: Not vulnerable.
This issue did not affect the versions of the kernel-xen package as shipped with Red Hat Enterprise Linux 5.
Package: kernel-xen (Red Hat Enterprise Linux 5) - Not affected
Debian
CVE-2014-8595: xen - arch/x86/x86_emulate/x86_emulate.c in Xen 3.2.1 through 4.4.x does not properly ...
vendor_debian·2014·CVSS 1.9
CVE-2014-8595 [LOW] CVE-2014-8595: xen - arch/x86/x86_emulate/x86_emulate.c in Xen 3.2.1 through 4.4.x does not properly ...
arch/x86/x86_emulate/x86_emulate.c in Xen 3.2.1 through 4.4.x does not properly check privileges, which allows local HVM guest users to gain privileges or cause a denial of service (crash) via a crafted (1) CALL, (2) JMP, (3) RETF, (4) LCALL, (5) LJMP, or (6) LRET far branch instruction.
Scope: local
bookworm: resolved (fixed in 4.4.1-4)
bullseye: resolved (fixed in 4.4.1-4)
forky: resolved (fixed in 4.4.1-4)
sid: resolved (fixed in 4.4.1-4)
trixie: resolved (fixed in 4.4.1-4)
GHSA
GHSA-6qqc-xj3c-9jj8: arch/x86/x86_emulate/x86_emulate
ghsa_unreviewed·2022-05-14
CVE-2014-8595 [LOW] GHSA-6qqc-xj3c-9jj8: arch/x86/x86_emulate/x86_emulate
arch/x86/x86_emulate/x86_emulate.c in Xen 3.2.1 through 4.4.x does not properly check privileges, which allows local HVM guest users to gain privileges or cause a denial of service (crash) via a crafted (1) CALL, (2) JMP, (3) RETF, (4) LCALL, (5) LJMP, or (6) LRET far branch instruction.
OSV
CVE-2014-8595: arch/x86/x86_emulate/x86_emulate
osv·2014-11-19·CVSS 1.9
CVE-2014-8595 [LOW] CVE-2014-8595: arch/x86/x86_emulate/x86_emulate
arch/x86/x86_emulate/x86_emulate.c in Xen 3.2.1 through 4.4.x does not properly check privileges, which allows local HVM guest users to gain privileges or cause a denial of service (crash) via a crafted (1) CALL, (2) JMP, (3) RETF, (4) LCALL, (5) LJMP, or (6) LRET far branch instruction.
No detection rules found.
No public exploits indexed.
Bugzilla
CVE-2014-8595 kernel: xen: Missing privilege level checks in x86 emulation of far branches (xsa110) [fedora-all]
bugzilla·2014-11-18·CVSS 1.9
CVE-2014-8595 [LOW] CVE-2014-8595 kernel: xen: Missing privilege level checks in x86 emulation of far branches (xsa110) [fedora-all]
CVE-2014-8595 kernel: xen: Missing privilege level checks in x86 emulation of far branches (xsa110) [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 changelog and the
fedpkg commit message.
NOTE: this issue affe
Bugzilla
CVE-2014-8595 kernel: xen: Missing privilege level checks in x86 emulation of far branches (xsa110)
bugzilla·2014-11-05·CVSS 1.9
CVE-2014-8595 [LOW] CVE-2014-8595 kernel: xen: Missing privilege level checks in x86 emulation of far branches (xsa110)
CVE-2014-8595 kernel: xen: Missing privilege level checks in x86 emulation of far branches (xsa110)
The emulation of far branch instructions (CALL, JMP, and RETF in Intel
assembly syntax, LCALL, LJMP, and LRET in AT&T assembly syntax)
incompletely performs privilege checks.
Malicious HVM guest user mode code may be able to elevate its
privileges to guest supervisor mode, or to crash the guest.
Acknowledgements:
Red Hat would like to thank the Xen for reporting this issue.
Discussion:
Statement:
Not vulnerable.
This issue did not affect the versions of the kernel-xen package as shipped with Red Hat Enterprise Linux 5.
---
External References:
http://xenbits.xen.org/xsa/advisory-110.html
---
Created xen tracking bugs for this issue:
Affects: fedora-all [bug 1165204]
http://lists.opensuse.org/opensuse-security-announce/2015-02/msg00005.htmlhttp://lists.opensuse.org/opensuse-security-announce/2015-02/msg00010.htmlhttp://secunia.com/advisories/62537http://secunia.com/advisories/62672http://support.citrix.com/article/CTX200288http://support.citrix.com/article/CTX201794http://www.debian.org/security/2015/dsa-3140http://www.securityfocus.com/bid/71151http://xenbits.xen.org/xsa/advisory-110.htmlhttps://exchange.xforce.ibmcloud.com/vulnerabilities/98768https://security.gentoo.org/glsa/201504-04http://lists.opensuse.org/opensuse-security-announce/2015-02/msg00005.htmlhttp://lists.opensuse.org/opensuse-security-announce/2015-02/msg00010.htmlhttp://secunia.com/advisories/62537http://secunia.com/advisories/62672http://support.citrix.com/article/CTX200288http://support.citrix.com/article/CTX201794http://www.debian.org/security/2015/dsa-3140http://www.securityfocus.com/bid/71151http://xenbits.xen.org/xsa/advisory-110.htmlhttps://exchange.xforce.ibmcloud.com/vulnerabilities/98768https://security.gentoo.org/glsa/201504-04
2014-11-19
Published