Vulnerabilities > CVE-2017-10914 - Double Free vulnerability in XEN
Attack vector
NETWORK Attack complexity
HIGH Privileges required
NONE Confidentiality impact
HIGH Integrity impact
HIGH Availability impact
HIGH Summary
The grant-table feature in Xen through 4.8.x has a race condition leading to a double free, which allows guest OS users to cause a denial of service (memory consumption), or possibly obtain sensitive information or gain privileges, aka XSA-218 bug 2.
Vulnerable Configurations
Common Weakness Enumeration (CWE)
Nessus
NASL family Gentoo Local Security Checks NASL id GENTOO_GLSA-201710-17.NASL description The remote host is affected by the vulnerability described in GLSA-201710-17 (Xen: Multiple vulnerabilities) Multiple vulnerabilities have been discovered in Xen. Please review the referenced CVE identifiers for details. Impact : A local attacker could escalate privileges, cause a Denial of Service condition, obtain sensitive information, or have other unspecified impacts. Workaround : There is no known workaround at this time. last seen 2020-06-01 modified 2020-06-02 plugin id 103910 published 2017-10-18 reporter This script is Copyright (C) 2017-2019 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/103910 title GLSA-201710-17 : Xen: Multiple vulnerabilities NASL family Debian Local Security Checks NASL id DEBIAN_DLA-1132.NASL description Multiple vulnerabilities have been discovered in the Xen hypervisor : CVE-2017-10912 Jann Horn discovered that incorrectly handling of page transfers might result in privilege escalation. CVE-2017-10913 / CVE-2017-10914 Jann Horn discovered that race conditions in grant handling might result in information leaks or privilege escalation. CVE-2017-10915 Andrew Cooper discovered that incorrect reference counting with shadow paging might result in privilege escalation. CVE-2017-10918 Julien Grall discovered that incorrect error handling in physical-to-machine memory mappings may result in privilege escalation, denial of service or an information leak. CVE-2017-10920 / CVE-2017-10921 / CVE-2017-10922 Jan Beulich discovered multiple places where reference counting on grant table operations was incorrect, resulting in potential privilege escalation CVE-2017-12135 Jan Beulich found multiple problems in the handling of transitive grants which could result in denial of service and potentially privilege escalation. CVE-2017-12137 Andrew Cooper discovered that incorrect validation of grants may result in privilege escalation. CVE-2017-12855 Jan Beulich discovered that incorrect grant status handling, thus incorrectly informing the guest that the grant is no longer in use. CVE-2017-14316 Matthew Daley discovered that the NUMA node parameter wasn last seen 2020-03-17 modified 2017-10-12 plugin id 103791 published 2017-10-12 reporter This script is Copyright (C) 2017-2020 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/103791 title Debian DLA-1132-1 : xen security update NASL family OracleVM Local Security Checks NASL id ORACLEVM_OVMSA-2017-0153.NASL description The remote OracleVM system is missing necessary patches to address critical security updates : please see Oracle VM Security Advisory OVMSA-2017-0153 for details. last seen 2020-06-01 modified 2020-06-02 plugin id 103830 published 2017-10-13 reporter This script is Copyright (C) 2017-2019 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/103830 title OracleVM 3.4 : xen (OVMSA-2017-0153) NASL family Misc. NASL id CITRIX_XENSERVER_CTX224740.NASL description The version of Citrix XenServer installed on the remote host is missing a security hotfix. It is, therefore, affected by multiple vulnerabilities : - A flaw exists that causes grant table operations to fail due to improper handling of reference counts. An unauthenticated, remote attacker can exploit this to have an unspecified impact. - An information disclosure vulnerability exists due to blkif responses leaking stack data. An unauthenticated, remote attacker can exploit this to disclose potentially sensitive information. - A NULL pointer dereference flaw exists in the event channel poll that allows an unauthenticated, remote attacker to cause a denial of service condition. - A flaw exists in shadow emulation due to insufficient reference counts. An unauthenticated, remote attacker can exploit this to have an unspecified impact. - A race condition exists in the grant table unmap code that allows an unauthenticated, remote attacker to have an unspecified impact. - An unspecified flaw exists in page transfers that allows a local attacker on the PV guest to gain elevated privileges. - A flaw exists that is triggered by stale P2M mappings due to insufficient error checking. An unauthenticated, remote attacker can exploit this to have an unspecified impact. last seen 2020-04-30 modified 2017-07-03 plugin id 101205 published 2017-07-03 reporter This script is Copyright (C) 2017-2020 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/101205 title Citrix XenServer Multiple Vulnerabilities (CTX224740) NASL family OracleVM Local Security Checks NASL id ORACLEVM_OVMSA-2017-0142.NASL description The remote OracleVM system is missing necessary patches to address critical security updates : please see Oracle VM Security Advisory OVMSA-2017-0142 for details. last seen 2020-06-01 modified 2020-06-02 plugin id 102835 published 2017-08-30 reporter This script is Copyright (C) 2017-2019 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/102835 title OracleVM 3.4 : xen (OVMSA-2017-0142) NASL family Debian Local Security Checks NASL id DEBIAN_DSA-3969.NASL description Multiple vulnerabilities have been discovered in the Xen hypervisor : - CVE-2017-10912 Jann Horn discovered that incorrectly handling of page transfers might result in privilege escalation. - CVE-2017-10913 / CVE-2017-10914 Jann Horn discovered that race conditions in grant handling might result in information leaks or privilege escalation. - CVE-2017-10915 Andrew Cooper discovered that incorrect reference counting with shadow paging might result in privilege escalation. - CVE-2017-10916 Andrew Cooper discovered an information leak in the handling of the Memory Protection Extensions (MPX) and Protection Key (PKU) CPU features. This only affects Debian stretch. - CVE-2017-10917 Ankur Arora discovered a NULL pointer dereference in event polling, resulting in denial of service. - CVE-2017-10918 Julien Grall discovered that incorrect error handling in physical-to-machine memory mappings may result in privilege escalation, denial of service or an information leak. - CVE-2017-10919 Julien Grall discovered that incorrect handling of virtual interrupt injection on ARM systems may result in denial of service. - CVE-2017-10920 / CVE-2017-10921 / CVE-2017-10922 Jan Beulich discovered multiple places where reference counting on grant table operations was incorrect, resulting in potential privilege escalation. - CVE-2017-12135 Jan Beulich found multiple problems in the handling of transitive grants which could result in denial of service and potentially privilege escalation. - CVE-2017-12136 Ian Jackson discovered that race conditions in the allocator for grant mappings may result in denial of service or privilege escalation. This only affects Debian stretch. - CVE-2017-12137 Andrew Cooper discovered that incorrect validation of grants may result in privilege escalation. - CVE-2017-12855 Jan Beulich discovered that incorrect grant status handling, thus incorrectly informing the guest that the grant is no longer in use. - XSA-235 (no CVE yet) Wei Liu discovered that incorrect locking of add-to-physmap operations on ARM may result in denial of service. last seen 2020-06-01 modified 2020-06-02 plugin id 103146 published 2017-09-13 reporter This script is Copyright (C) 2017-2018 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/103146 title Debian DSA-3969-1 : xen - security update NASL family SuSE Local Security Checks NASL id SUSE_SU-2017-1812-1.NASL description This update for xen fixes several issues. These security issues were fixed : - CVE-2017-10911: blkif responses leaked backend stack data, which allowed unprivileged guest to obtain sensitive information from the host or other guests (XSA-216, bsc#1042863) - CVE-2017-10912: Page transfer might have allowed PV guest to elevate privilege (XSA-217, bsc#1042882) - CVE-2017-10913, CVE-2017-10914: Races in the grant table unmap code allowed for informations leaks and potentially privilege escalation (XSA-218, bsc#1042893) - CVE-2017-10915: Insufficient reference counts during shadow emulation allowed a malicious pair of guest to elevate their privileges to the privileges that XEN runs under (XSA-219, bsc#1042915) - CVE-2017-10917: Missing NULL pointer check in event channel poll allows guests to DoS the host (XSA-221, bsc#1042924) - CVE-2017-10918: Stale P2M mappings due to insufficient error checking allowed malicious guest to leak information or elevate privileges (XSA-222, bsc#1042931) - CVE-2017-10922, CVE-2017-10921, CVE-2017-10920: Grant table operations mishandled reference counts allowing malicious guests to escape (XSA-224, bsc#1042938) - CVE-2017-10916: PKRU and BND* leakage between vCPU-s might have leaked information to other guests (XSA-220, bsc#1042923) - CVE-2017-9330: USB OHCI Emulation in qemu allowed local guest OS users to cause a denial of service (infinite loop) by leveraging an incorrect return value (bsc#1042160) - CVE-2017-8309: Memory leak in the audio/audio.c allowed remote attackers to cause a denial of service (memory consumption) by repeatedly starting and stopping audio capture (bsc#1037243) - CVE-2017-8112: hw/scsi/vmw_pvscsi.c allowed local guest OS privileged users to cause a denial of service (infinite loop and CPU consumption) via the message ring page count (bsc#1036470) - CVE-2017-8905: Xen a failsafe callback, which might have allowed PV guest OS users to execute arbitrary code on the host OS (XSA-215, bsc#1034845). - CVE-2017-9503: The MegaRAID SAS 8708EM2 Host Bus Adapter emulation support was vulnerable to a NULL pointer dereference issue which allowed a privileged user inside guest to crash the Qemu process on the host resulting in DoS (bsc#1043297) - CVE-2017-9374: Missing free of last seen 2020-06-01 modified 2020-06-02 plugin id 101350 published 2017-07-10 reporter This script is Copyright (C) 2017-2019 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/101350 title SUSE SLES12 Security Update : xen (SUSE-SU-2017:1812-1) NASL family SuSE Local Security Checks NASL id OPENSUSE-2017-799.NASL description This update for xen fixes several issues. These security issues were fixed : - CVE-2017-10912: Page transfer might have allowed PV guest to elevate privilege (XSA-217, bsc#1042882) - CVE-2017-10913 CVE-2017-10914: Races in the grant table unmap code allowed for informations leaks and potentially privilege escalation (XSA-218, bsc#1042893) - CVE-2017-10915: Insufficient reference counts during shadow emulation allowed a malicious pair of guest to elevate their privileges to the privileges that XEN runs under (XSA-219, bsc#1042915) - CVE-2017-10917: Missing NULL pointer check in event channel poll allows guests to DoS the host (XSA-221, bsc#1042924) - CVE-2017-10918: Stale P2M mappings due to insufficient error checking allowed malicious guest to leak information or elevate privileges (XSA-222, bsc#1042931) - CVE-2017-10920, CVE-2017-10921, CVE-2017-10922: Grant table operations mishandled reference counts allowing malicious guests to escape (XSA-224, bsc#1042938) - CVE-2017-9330: USB OHCI Emulation in qemu allowed local guest OS users to cause a denial of service (infinite loop) by leveraging an incorrect return value (bsc#1042160) - CVE-2017-8309: Memory leak in the audio/audio.c allowed remote attackers to cause a denial of service (memory consumption) by repeatedly starting and stopping audio capture (bsc#1037243) - PKRU and BND* leakage between vCPU-s might have leaked information to other guests (XSA-220, bsc#1042923) These non-security issues were fixed : - bsc#1027519: Included various upstream patches - bsc#1035642: Ensure that rpmbuild works This update was imported from the SUSE:SLE-12-SP2:Update update project. last seen 2020-06-05 modified 2017-07-10 plugin id 101349 published 2017-07-10 reporter This script is Copyright (C) 2017-2020 Tenable Network Security, Inc. source https://www.tenable.com/plugins/nessus/101349 title openSUSE Security Update : xen (openSUSE-2017-799) NASL family OracleVM Local Security Checks NASL id ORACLEVM_OVMSA-2018-0248.NASL description The remote OracleVM system is missing necessary patches to address critical security updates : please see Oracle VM Security Advisory OVMSA-2018-0248 for details. last seen 2020-06-01 modified 2020-06-02 plugin id 111992 published 2018-08-20 reporter This script is Copyright (C) 2018-2019 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/111992 title OracleVM 3.4 : xen (OVMSA-2018-0248) (Bunker Buster) (Foreshadow) (Meltdown) (POODLE) (Spectre) NASL family SuSE Local Security Checks NASL id SUSE_SU-2017-1795-1.NASL description This update for xen fixes several issues. These security issues were fixed : - CVE-2017-9503: The MegaRAID SAS 8708EM2 Host Bus Adapter emulation support was vulnerable to a NULL pointer dereference issue which allowed a privileged user inside guest to crash the Qemu process on the host resulting in DoS (bsc#1043297) - CVE-2017-9374: Missing free of last seen 2020-06-01 modified 2020-06-02 plugin id 101293 published 2017-07-07 reporter This script is Copyright (C) 2017-2019 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/101293 title SUSE SLES12 Security Update : xen (SUSE-SU-2017:1795-1)