CRITICAL
xen: x86: insufficient reference counts during shadow emulation (XSA-219)
Published Jul 5, 2017
9.0
CRITICALCVSS 3.0
EPSS 1.67%
Description
The shadow-paging feature in Xen through 4.8.x mismanages page references and consequently introduces a race condition, which allows guest OS users to obtain Xen privileges, aka XSA-219.
Affected products
Remediation
Red Hat mitigation
Where the HVM guest is explicitly configured to use shadow paging (eg via the `hap=0' xl domain configuration file parameter), changing to HAP (eg by setting `hap=1') will avoid exposing the vulnerability to those guests. HAP is the default (in upstream Xen), where the hardware supports it; so this mitigation is only applicable if HAP has been disabled by configuration. (This mitigation is not applicable to PV guests.)
Weaknesses (1)
References (11)
- http://www.debian.org/security/2017/dsa-3969 vendor-advisoryx_refsource_DEBIAN
- http://www.securityfocus.com/bid/99174 vdb-entryx_refsource_BIDThird Party AdvisoryVDB Entry
- http://xenbits.xen.org/xsa/advisory-219.html
- https://access.redhat.com/security/cve/CVE-2017-10915 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1458873 Issue Tracking
- https://euvd.enisa.europa.eu/vulnerability/EUVD-2017-2553 Advisory
- https://nvd.nist.gov/vuln/detail/CVE-2017-10915
- https://security.gentoo.org/glsa/201708-03 vendor-advisoryx_refsource_GENTOO
- https://security.gentoo.org/glsa/201710-17 vendor-advisoryx_refsource_GENTOO
- https://www.cve.org/CVERecord?id=CVE-2017-10915
- https://xenbits.xen.org/xsa/advisory-219.html x_refsource_CONFIRMMailing ListMitigationVendor Advisory
| Link | Providers | Tags |
|---|---|---|
| http://www.debian.org/security/2017/dsa-3969 | vendor-advisoryx_refsource_DEBIAN | |
| http://www.securityfocus.com/bid/99174 | vdb-entryx_refsource_BIDThird Party AdvisoryVDB Entry | |
| http://xenbits.xen.org/xsa/advisory-219.html | ||
| https://access.redhat.com/security/cve/CVE-2017-10915 | Vendor Advisory | |
| https://bugzilla.redhat.com/show_bug.cgi?id=1458873 | Issue Tracking | |
| https://euvd.enisa.europa.eu/vulnerability/EUVD-2017-2553 | Advisory | |
| https://nvd.nist.gov/vuln/detail/CVE-2017-10915 | ||
| https://security.gentoo.org/glsa/201708-03 | vendor-advisoryx_refsource_GENTOO | |
| https://security.gentoo.org/glsa/201710-17 | vendor-advisoryx_refsource_GENTOO | |
| https://www.cve.org/CVERecord?id=CVE-2017-10915 | ||
| https://xenbits.xen.org/xsa/advisory-219.html | x_refsource_CONFIRMMailing ListMitigationVendor Advisory |
Change history (0)
No recorded changes yet.
Sources
CVE.org / MITRE
Status PUBLISHED
Assigner mitre
Published Jul 5, 2017
Updated Aug 5, 2024
Reserved Jul 4, 2017
Link CVE-2017-10915
CISA Vulnrichment
No data
GitHub
No data