CVE-2017-12135
published 2017-08-24CVE-2017-12135: Xen allows local OS guest users to cause a denial of service (crash) or possibly obtain sensitive information or gain privileges via vectors involving…
PriorityP335high8.8CVSS 3.0
AVLACLPRLUINSCCHIHAH
EPSS
0.45%
38.3th percentile
Xen allows local OS guest users to cause a denial of service (crash) or possibly obtain sensitive information or gain privileges via vectors involving transitive grants.
Affected
28 ranges· showing 25
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| citrix | citrix_adm | — | — |
| citrix | citrix_hypervisor | — | — |
| citrix | citrix_virtual_apps_and_desktops | — | — |
| citrix | endpoint_management | — | — |
| citrix | netscaler_adc | — | — |
| citrix | netscaler_gateway | — | — |
| citrix | xenserver | — | — |
| citrix | xenserver | — | — |
| citrix | xenserver | — | — |
| citrix | xenserver | — | — |
| citrix | xenserver | — | — |
| citrix | xenserver | — | — |
| citrix | xenserver | — | — |
| debian | debian_linux | — | — |
| debian | debian_linux | — | — |
| debian | xen | < xen 4.11.4-1 (bookworm) | xen 4.11.4-1 (bookworm) |
| debian | xen | < xen 4.8.1-1+deb9u3 (bookworm) | xen 4.8.1-1+deb9u3 (bookworm) |
| fedoraproject | fedora | — | — |
| xen | xen | <= 4.13.0 | — |
| xen | xen | — | — |
| xen | xen | >= 0 < 4.11.4-1 | 4.11.4-1 |
| xen | xen | >= 0 < 4.8.1-1+deb9u3 | 4.8.1-1+deb9u3 |
| xen | xen | >= 0 < 4.11.4-1 | 4.11.4-1 |
| xen | xen | >= 0 < 4.8.1-1+deb9u3 | 4.8.1-1+deb9u3 |
| xen | xen | >= 0 < 4.11.4-1 | 4.11.4-1 |
CVSS provenance
nvdv3.08.8HIGHCVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
nvdv2.04.6MEDIUMAV:L/AC:L/Au:N/C:P/I:P/A:P
osv8.8HIGH
vendor_debian8.8HIGH
vendor_redhat8.8HIGH
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Red Hat
xen: bad continuation handling in GNTTABOP_copy (XSA-318)
vendor_redhat·2020-04-14·CVSS 8.8
CVE-2020-11742 [HIGH] CWE-393 xen: bad continuation handling in GNTTABOP_copy (XSA-318)
xen: bad continuation handling in GNTTABOP_copy (XSA-318)
An issue was discovered in Xen through 4.13.x, allowing guest OS users to cause a denial of service because of bad continuation handling in GNTTABOP_copy. Grant table operations are expected to return 0 for success, and a negative number for errors. The fix for CVE-2017-12135 introduced a path through grant copy handling where success may be returned to the caller without any action taken. In particular, the status fields of individual operations are left uninitialised, and may result in errant behaviour in the caller of GNTTABOP_copy. A buggy or malicious guest can construct its grant table in such a way that, when a backend domain tries to copy a grant, it hits the incorrect exit path. This returns success to the caller without d
Debian
CVE-2020-11742: xen - An issue was discovered in Xen through 4.13.x, allowing guest OS users to cause ...
vendor_debian·2020·CVSS 8.8
CVE-2020-11742 [HIGH] CVE-2020-11742: xen - An issue was discovered in Xen through 4.13.x, allowing guest OS users to cause ...
An issue was discovered in Xen through 4.13.x, allowing guest OS users to cause a denial of service because of bad continuation handling in GNTTABOP_copy. Grant table operations are expected to return 0 for success, and a negative number for errors. The fix for CVE-2017-12135 introduced a path through grant copy handling where success may be returned to the caller without any action taken. In particular, the status fields of individual operations are left uninitialised, and may result in errant behaviour in the caller of GNTTABOP_copy. A buggy or malicious guest can construct its grant table in such a way that, when a backend domain tries to copy a grant, it hits the incorrect exit path. This returns success to the caller without doing anything, which may cause crashes or other incorrect b
Red Hat
xen: possibly unbounded recursion in grant table code (XSA-226)
vendor_redhat·2017-08-15·CVSS 8.8
CVE-2017-12135 [HIGH] xen: possibly unbounded recursion in grant table code (XSA-226)
xen: possibly unbounded recursion in grant table code (XSA-226)
Xen allows local OS guest users to cause a denial of service (crash) or possibly obtain sensitive information or gain privileges via vectors involving transitive grants.
Package: xen (Red Hat Enterprise Linux 5) - Will not fix
Debian
CVE-2017-12135: xen - Xen allows local OS guest users to cause a denial of service (crash) or possibly...
vendor_debian·2017·CVSS 8.8
CVE-2017-12135 [HIGH] CVE-2017-12135: xen - Xen allows local OS guest users to cause a denial of service (crash) or possibly...
Xen allows local OS guest users to cause a denial of service (crash) or possibly obtain sensitive information or gain privileges via vectors involving transitive grants.
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)
Citrix
Citrix Security Bulletin CTX225941
vendor_citrix·CVSS 8.8
CVE-2017-12134 [HIGH] Citrix Security Bulletin CTX225941
Citrix Security Bulletin CTX225941
CVE References: CVE-2017-12134, CVE-2017-12135, CVE-2017-12136, CVE-2017-12137, CVE-2025-12101, CVE-2025-62626, CVE-2026-23554, CVE-2026-3055, CVE-2026-4368, CVE-2026-4397
Affected Products: Citrix ADM, Citrix Hypervisor, Citrix Virtual Apps and Desktops, Endpoint Management, NetScaler ADC, NetScaler Gateway, XenServer
GHSA
GHSA-q23v-6m98-94w9: An issue was discovered in Xen through 4
ghsa_unreviewed·2022-05-24·CVSS 8.8
CVE-2020-11742 [HIGH] GHSA-q23v-6m98-94w9: An issue was discovered in Xen through 4
An issue was discovered in Xen through 4.13.x, allowing guest OS users to cause a denial of service because of bad continuation handling in GNTTABOP_copy. Grant table operations are expected to return 0 for success, and a negative number for errors. The fix for CVE-2017-12135 introduced a path through grant copy handling where success may be returned to the caller without any action taken. In particular, the status fields of individual operations are left uninitialised, and may result in errant behaviour in the caller of GNTTABOP_copy. A buggy or malicious guest can construct its grant table in such a way that, when a backend domain tries to copy a grant, it hits the incorrect exit path. This returns success to the caller without doing anything, which may cause crashes or other incorrect b
GHSA
GHSA-4pcw-2chr-m4jj: Xen allows local OS guest users to cause a denial of service (crash) or possibly obtain sensitive information or gain privileges via vectors involving
ghsa_unreviewed·2022-05-13
CVE-2017-12135 [HIGH] CWE-682 GHSA-4pcw-2chr-m4jj: Xen allows local OS guest users to cause a denial of service (crash) or possibly obtain sensitive information or gain privileges via vectors involving
Xen allows local OS guest users to cause a denial of service (crash) or possibly obtain sensitive information or gain privileges via vectors involving transitive grants.
OSV
CVE-2020-11742: An issue was discovered in Xen through 4
osv·2020-04-14·CVSS 8.8
CVE-2020-11742 [HIGH] CVE-2020-11742: An issue was discovered in Xen through 4
An issue was discovered in Xen through 4.13.x, allowing guest OS users to cause a denial of service because of bad continuation handling in GNTTABOP_copy. Grant table operations are expected to return 0 for success, and a negative number for errors. The fix for CVE-2017-12135 introduced a path through grant copy handling where success may be returned to the caller without any action taken. In particular, the status fields of individual operations are left uninitialised, and may result in errant behaviour in the caller of GNTTABOP_copy. A buggy or malicious guest can construct its grant table in such a way that, when a backend domain tries to copy a grant, it hits the incorrect exit path. This returns success to the caller without doing anything, which may cause crashes or other incorrect b
OSV
CVE-2017-12135: Xen allows local OS guest users to cause a denial of service (crash) or possibly obtain sensitive information or gain privileges via vectors involving
osv·2017-08-24·CVSS 8.8
CVE-2017-12135 [HIGH] CVE-2017-12135: Xen allows local OS guest users to cause a denial of service (crash) or possibly obtain sensitive information or gain privileges via vectors involving
Xen allows local OS guest users to cause a denial of service (crash) or possibly obtain sensitive information or gain privileges via vectors involving transitive grants.
No detection rules found.
No public exploits indexed.
Bugzilla
CVE-2020-11742 xen: bad continuation handling in GNTTABOP_copy (XSA-318)
bugzilla·2020-04-14·CVSS 8.8
CVE-2020-11742 [HIGH] CVE-2020-11742 xen: bad continuation handling in GNTTABOP_copy (XSA-318)
CVE-2020-11742 xen: bad continuation handling in GNTTABOP_copy (XSA-318)
An issue was discovered in Xen through 4.13.x, allowing guest OS users to cause a denial of service because of bad continuation handling in GNTTABOP_copy. Grant table operations are expected to return 0 for success, and a negative number for errors. The fix for CVE-2017-12135 introduced a path through grant copy handling where success may be returned to the caller without any action taken. In particular, the status fields of individual operations are left uninitialised, and may result in errant behaviour in the caller of GNTTABOP_copy. A buggy or malicious guest can construct its grant table in such a way that, when a backend domain tries to copy a grant, it hits the incorrect exit path. This returns success to the c
Bugzilla
CVE-2017-12134 CVE-2017-12135 CVE-2017-12136 CVE-2017-12137 CVE-2017-12855 xen: various flaws [fedora-all]
bugzilla·2017-08-15·CVSS 8.8
CVE-2017-12134 [HIGH] CVE-2017-12134 CVE-2017-12135 CVE-2017-12136 CVE-2017-12137 CVE-2017-12855 xen: various flaws [fedora-all]
CVE-2017-12134 CVE-2017-12135 CVE-2017-12136 CVE-2017-12137 CVE-2017-12855 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 affect
Bugzilla
CVE-2017-12135 xsa226 xen: possibly unbounded recursion in grant table code (XSA-226)
bugzilla·2017-08-02·CVSS 8.8
CVE-2017-12135 [HIGH] CVE-2017-12135 xsa226 xen: possibly unbounded recursion in grant table code (XSA-226)
CVE-2017-12135 xsa226 xen: possibly unbounded recursion in grant table code (XSA-226)
ISSUE DESCRIPTION
Code to handle copy operations on transitive grants has built in retry
logic, involving a function reinvoking itself with unchanged
parameters. Such use assumes that the compiler would also translate
this to a so called "tail call" when generating machine code.
Empirically, this is not commonly the case, allowing for theoretically
unbounded nesting of such function calls.
IMPACT
A malicious or buggy guest may be able to crash Xen. Privilege
escalation and information leaks cannot be ruled out.
VULNERABLE SYSTEMS
All versions of Xen are vulnerable.
MITIGATION
There is no known mitigation.
External References:
http://xenbits.xen.org/xsa/advisory-226.html
Discussion:
Acknowledgm
http://www.debian.org/security/2017/dsa-3969http://www.openwall.com/lists/oss-security/2017/08/15/1http://www.openwall.com/lists/oss-security/2017/08/17/6http://www.openwall.com/lists/oss-security/2020/04/14/4http://www.securityfocus.com/bid/100344http://www.securitytracker.com/id/1039178http://xenbits.xen.org/xsa/advisory-226.htmlhttps://bugzilla.redhat.com/show_bug.cgi?id=1477655https://security.gentoo.org/glsa/201801-14https://support.citrix.com/article/CTX225941http://www.debian.org/security/2017/dsa-3969http://www.openwall.com/lists/oss-security/2017/08/15/1http://www.openwall.com/lists/oss-security/2017/08/17/6http://www.openwall.com/lists/oss-security/2020/04/14/4http://www.securityfocus.com/bid/100344http://www.securitytracker.com/id/1039178http://xenbits.xen.org/xsa/advisory-226.htmlhttps://bugzilla.redhat.com/show_bug.cgi?id=1477655https://security.gentoo.org/glsa/201801-14https://support.citrix.com/article/CTX225941
2017-08-24
Published