Vulnerabilities > CVE-2015-4106 - Incorrect Authorization vulnerability in multiple products
Attack vector
LOCAL Attack complexity
LOW Privileges required
NONE Confidentiality impact
PARTIAL Integrity impact
PARTIAL Availability impact
PARTIAL Summary
QEMU does not properly restrict write access to the PCI config space for certain PCI pass-through devices, which might allow local x86 HVM guests to gain privileges, cause a denial of service (host crash), obtain sensitive information, or possibly have other unspecified impact via unknown vectors.
Vulnerable Configurations
Common Weakness Enumeration (CWE)
Nessus
NASL family OracleVM Local Security Checks NASL id ORACLEVM_OVMSA-2015-0063.NASL description The remote OracleVM system is missing necessary patches to address critical security updates : - xen/pt: unknown PCI config space fields should be read-only ... by default. Add a per-device last seen 2020-06-01 modified 2020-06-02 plugin id 83966 published 2015-06-03 reporter This script is Copyright (C) 2015-2019 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/83966 title OracleVM 3.2 : xen (OVMSA-2015-0063) NASL family Ubuntu Local Security Checks NASL id UBUNTU_USN-2630-1.NASL description Matt Tait discovered that QEMU incorrectly handled the virtual PCNET driver. A malicious guest could use this issue to cause a denial of service, or possibly execute arbitrary code on the host as the user running the QEMU process. In the default installation, when QEMU is used with libvirt, attackers would be isolated by the libvirt AppArmor profile. (CVE-2015-3209) Kurt Seifried discovered that QEMU incorrectly handled certain temporary files. A local attacker could use this issue to cause a denial of service. (CVE-2015-4037) Jan Beulich discovered that the QEMU Xen code incorrectly restricted write access to the host MSI message data field. A malicious guest could use this issue to cause a denial of service. This issue only applied to Ubuntu 14.04 LTS, Ubuntu 14.10 and Ubuntu 15.04. (CVE-2015-4103) Jan Beulich discovered that the QEMU Xen code incorrectly restricted access to the PCI MSI mask bits. A malicious guest could use this issue to cause a denial of service. This issue only applied to Ubuntu 14.04 LTS, Ubuntu 14.10 and Ubuntu 15.04. (CVE-2015-4104) Jan Beulich discovered that the QEMU Xen code incorrectly handled MSI-X error messages. A malicious guest could use this issue to cause a denial of service. This issue only applied to Ubuntu 14.04 LTS, Ubuntu 14.10 and Ubuntu 15.04. (CVE-2015-4105) Jan Beulich discovered that the QEMU Xen code incorrectly restricted write access to the PCI config space. A malicious guest could use this issue to cause a denial of service, obtain sensitive information, or possibly execute arbitrary code. This issue only applied to Ubuntu 14.04 LTS, Ubuntu 14.10 and Ubuntu 15.04. (CVE-2015-4106). Note that Tenable Network Security has extracted the preceding description block directly from the Ubuntu security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues. last seen 2020-06-01 modified 2020-06-02 plugin id 84118 published 2015-06-11 reporter Ubuntu Security Notice (C) 2015-2019 Canonical, Inc. / NASL script (C) 2015-2019 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/84118 title Ubuntu 12.04 LTS / 14.04 LTS / 14.10 / 15.04 : qemu, qemu-kvm vulnerabilities (USN-2630-1) NASL family Fedora Local Security Checks NASL id FEDORA_2015-9456.NASL description replace deprecated gnutls use in qemu-xen-traditional based on qemu-xen patches, work around a gcc 5 bug, Potential unintended writes to host MSI message data field via qemu [XSA-128, CVE-2015-4103], PCI MSI mask bits inadvertently exposed to guests [XSA-129, CVE-2015-4104], Guest triggerable qemu MSI-X pass-through error messages [XSA-130, CVE-2015-4105], Unmediated PCI register access in qemu [XSA-131, CVE-2015-4106] Note that Tenable Network Security has extracted the preceding description block directly from the Fedora security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues. last seen 2020-06-05 modified 2015-06-15 plugin id 84177 published 2015-06-15 reporter This script is Copyright (C) 2015-2020 Tenable Network Security, Inc. source https://www.tenable.com/plugins/nessus/84177 title Fedora 22 : xen-4.5.0-10.fc22 (2015-9456) NASL family SuSE Local Security Checks NASL id SUSE_SU-2015-1045-1.NASL description Xen was updated to fix seven security vulnerabilities : CVE-2015-4103: Potential unintended writes to host MSI message data field via qemu. (XSA-128, bnc#931625) CVE-2015-4104: PCI MSI mask bits inadvertently exposed to guests. (XSA-129, bnc#931626) CVE-2015-4105: Guest triggerable qemu MSI-X pass-through error messages. (XSA-130, bnc#931627) CVE-2015-4106: Unmediated PCI register access in qemu. (XSA-131, bnc#931628) CVE-2015-4163: GNTTABOP_swap_grant_ref operation misbehavior. (XSA-134, bnc#932790) CVE-2015-3209: Heap overflow in qemu pcnet controller allowing guest to host escape. (XSA-135, bnc#932770) CVE-2015-4164: DoS through iret hypercall handler. (XSA-136, bnc#932996) Note that Tenable Network Security has extracted the preceding description block directly from the SUSE security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues. last seen 2020-06-01 modified 2020-06-02 plugin id 84190 published 2015-06-15 reporter This script is Copyright (C) 2015-2019 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/84190 title SUSE SLED11 / SLES11 Security Update : Xen (SUSE-SU-2015:1045-1) NASL family SuSE Local Security Checks NASL id SUSE_SU-2015-1156-1.NASL description Xen was updated to fix six security issues : CVE-2015-4103: Potential unintended writes to host MSI message data field via qemu. (XSA-128, bsc#931625) CVE-2015-4104: PCI MSI mask bits inadvertently exposed to guests. (XSA-129, bsc#931626) CVE-2015-4105: Guest triggerable qemu MSI-X pass-through error messages. (XSA-130, bsc#931627) CVE-2015-4106: Unmediated PCI register access in qemu. (XSA-131, bsc#931628) CVE-2015-3209: heap overflow in qemu pcnet controller allowing guest to host escape. (XSA-135, bsc#932770) CVE-2015-4164: DoS through iret hypercall handler. (XSA-136, bsc#932996) Note that Tenable Network Security has extracted the preceding description block directly from the SUSE security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues. last seen 2020-06-01 modified 2020-06-02 plugin id 84468 published 2015-06-30 reporter This script is Copyright (C) 2015-2019 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/84468 title SUSE SLES11 Security Update : Xen (SUSE-SU-2015:1156-1) NASL family OracleVM Local Security Checks NASL id ORACLEVM_OVMSA-2015-0064.NASL description The remote OracleVM system is missing necessary patches to address critical security updates : please see Oracle VM Security Advisory OVMSA-2015-0064 for details. last seen 2020-06-01 modified 2020-06-02 plugin id 83967 published 2015-06-03 reporter This script is Copyright (C) 2015-2019 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/83967 title OracleVM 3.3 : xen (OVMSA-2015-0064) NASL family FreeBSD Local Security Checks NASL id FREEBSD_PKG_3D65734027EA11E5A4A5002590263BF5.NASL description The Xen Project reports : Qemu allows guests to not only read, but also write all parts of the PCI config space (but not extended config space) of passed through PCI devices not explicitly dealt with for (partial) emulation purposes. Since the effect depends on the specific purpose of the the config space field, it last seen 2020-06-01 modified 2020-06-02 plugin id 84699 published 2015-07-14 reporter This script is Copyright (C) 2015-2018 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/84699 title FreeBSD : xen-tools -- Unmediated PCI register access in qemu (3d657340-27ea-11e5-a4a5-002590263bf5) NASL family SuSE Local Security Checks NASL id SUSE_SU-2015-2324-1.NASL description This update fixes the following security issues : - bsc#956832 - CVE-2015-8345: xen: qemu: net: eepro100: infinite loop in processing command block list - Revert x86/IO-APIC: don last seen 2020-06-01 modified 2020-06-02 plugin id 87588 published 2015-12-22 reporter This script is Copyright (C) 2015-2019 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/87588 title SUSE SLED12 / SLES12 Security Update : xen (SUSE-SU-2015:2324-1) NASL family SuSE Local Security Checks NASL id OPENSUSE-2015-892.NASL description This update fixes the following security issues : - bsc#947165 - CVE-2015-7311: xen: libxl fails to honour readonly flag on disks with qemu-xen (xsa-142) - bsc#954405 - CVE-2015-8104: Xen: guest to host DoS by triggering an infinite loop in microcode via #DB exception - bsc#954018 - CVE-2015-5307: xen: x86: CPU lockup during fault delivery (XSA-156) - bsc#950704 - CVE-2015-7970 xen: x86: Long latency populate-on-demand operation is not preemptible (XSA-150) 563212c9-x86-PoD-Eager-sweep-for-zeroed-pages.patch last seen 2020-06-05 modified 2015-12-16 plugin id 87393 published 2015-12-16 reporter This script is Copyright (C) 2015-2020 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/87393 title openSUSE Security Update : xen (openSUSE-2015-892) NASL family SuSE Local Security Checks NASL id OPENSUSE-2015-434.NASL description Xen was updated to 4.4.2 to fix multiple vulnerabilities and non-security bugs. The following vulnerabilities were fixed : - CVE-2015-4103: Potential unintended writes to host MSI message data field via qemu (XSA-128) (boo#931625) - CVE-2015-4104: PCI MSI mask bits inadvertently exposed to guests (XSA-129) (boo#931626) - CVE-2015-4105: Guest triggerable qemu MSI-X pass-through error messages (XSA-130) (boo#931627) - CVE-2015-4106: Unmediated PCI register access in qemu (XSA-131) (boo#931628) - CVE-2015-4164: DoS through iret hypercall handler (XSA-136) (boo#932996) - CVE-2015-4163: GNTTABOP_swap_grant_ref operation misbehavior (XSA-134) (boo#932790) - CVE-2015-3209: heap overflow in qemu pcnet controller allowing guest to host escape (XSA-135) (boo#932770) - CVE-2015-3456: Fixed a buffer overflow in the floppy drive emulation, which could be used to denial of service attacks or potential code execution against the host. () - CVE-2015-3340: Xen did not initialize certain fields, which allowed certain remote service domains to obtain sensitive information from memory via a (1) XEN_DOMCTL_gettscinfo or (2) XEN_SYSCTL_getdomaininfolist request. () - CVE-2015-2752: Long latency MMIO mapping operations are not preemptible (XSA-125 boo#922705) - CVE-2015-2756: Unmediated PCI command register access in qemu (XSA-126 boo#922706) - CVE-2015-2751: Certain domctl operations may be abused to lock up the host (XSA-127 boo#922709) - CVE-2015-2151: Hypervisor memory corruption due to x86 emulator flaw (boo#919464 XSA-123) - CVE-2015-2045: Information leak through version information hypercall (boo#918998 XSA-122) - CVE-2015-2044: Information leak via internal x86 system device emulation (boo#918995 (XSA-121) - CVE-2015-2152: HVM qemu unexpectedly enabling emulated VGA graphics backends (boo#919663 XSA-119) - CVE-2014-3615: information leakage when guest sets high resolution (boo#895528) The following non-security bugs were fixed : - xentop: Fix memory leak on read failure - boo#923758: xen dmesg contains bogus output in early boot - boo#921842: Xentop doesn last seen 2020-06-05 modified 2015-06-23 plugin id 84333 published 2015-06-23 reporter This script is Copyright (C) 2015-2020 Tenable Network Security, Inc. source https://www.tenable.com/plugins/nessus/84333 title openSUSE Security Update : xen (openSUSE-2015-434) (Venom) NASL family SuSE Local Security Checks NASL id SUSE_SU-2015-1042-1.NASL description Xen was updated to fix seven security issues and one non-security bug. The following vulnerabilities were fixed : - CVE-2015-4103: Potential unintended writes to host MSI message data field via qemu (XSA-128) (bnc#931625) - CVE-2015-4104: PCI MSI mask bits inadvertently exposed to guests (XSA-129) (bnc#931626) - CVE-2015-4105: Guest triggerable qemu MSI-X pass-through error messages (XSA-130) (bnc#931627) - CVE-2015-4106: Unmediated PCI register access in qemu (XSA-131) (bnc#931628) - CVE-2015-4163: GNTTABOP_swap_grant_ref operation misbehavior (XSA-134) (bnc#932790) - CVE-2015-3209: heap overflow in qemu pcnet controller allowing guest to host escape (XSA-135) (bnc#932770) - CVE-2015-4164: DoS through iret hypercall handler (XSA-136) (bnc#932996) The update package also includes non-security fixes. See advisory for details. Note that Tenable Network Security has extracted the preceding description block directly from the SUSE security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues. last seen 2020-06-01 modified 2020-06-02 plugin id 84146 published 2015-06-12 reporter This script is Copyright (C) 2015-2019 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/84146 title SUSE SLED12 / SLES12 Security Update : xen (SUSE-SU-2015:1042-1) NASL family OracleVM Local Security Checks NASL id ORACLEVM_OVMSA-2016-0012.NASL description The remote OracleVM system is missing necessary patches to address critical security updates : - XSA-125: Limit XEN_DOMCTL_memory_mapping hypercall to only process up to 64 GFNs (or less) (Jan Beulich) [20732412] (CVE-2015-2752) - XSA-126: xen: limit guest control of PCI command register (Jan Beulich) [20739399] (CVE-2015-2756) - XSA-128: xen: properly gate host writes of modified PCI CFG contents (Jan Beulich) [21157440] (CVE-2015-4103) - XSA-129: xen: don last seen 2020-06-01 modified 2020-06-02 plugin id 88737 published 2016-02-15 reporter This script is Copyright (C) 2016-2019 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/88737 title OracleVM 2.2 : xen (OVMSA-2016-0012) NASL family Fedora Local Security Checks NASL id FEDORA_2015-9965.NASL description Heap overflow in QEMU PCNET controller, allowing guest->host escape [XSA-135, CVE-2015-3209] (#1230537) GNTTABOP_swap_grant_ref operation misbehavior [XSA-134, CVE-2015-4163] vulnerability in the iret hypercall handler [XSA-136, CVE-2015-4164] Potential unintended writes to host MSI message data field via qemu [XSA-128, CVE-2015-4103], PCI MSI mask bits inadvertently exposed to guests [XSA-129, CVE-2015-4104], Guest triggerable qemu MSI-X pass-through error messages [XSA-130, CVE-2015-4105], Unmediated PCI register access in qemu [XSA-131, CVE-2015-4106] Note that Tenable Network Security has extracted the preceding description block directly from the Fedora security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues. last seen 2020-06-05 modified 2015-06-25 plugin id 84378 published 2015-06-25 reporter This script is Copyright (C) 2015-2020 Tenable Network Security, Inc. source https://www.tenable.com/plugins/nessus/84378 title Fedora 20 : xen-4.3.4-6.fc20 (2015-9965) NASL family Gentoo Local Security Checks NASL id GENTOO_GLSA-201604-03.NASL description The remote host is affected by the vulnerability described in GLSA-201604-03 (Xen: Multiple vulnerabilities) Multiple vulnerabilities have been discovered in Xen. Please review the CVE identifiers referenced below for details. Impact : A local attacker could possibly cause a Denial of Service condition or obtain sensitive information. Workaround : There is no known workaround at this time. last seen 2020-06-01 modified 2020-06-02 plugin id 90380 published 2016-04-07 reporter This script is Copyright (C) 2016-2019 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/90380 title GLSA-201604-03 : Xen: Multiple vulnerabilities (Venom) NASL family Debian Local Security Checks NASL id DEBIAN_DSA-3284.NASL description Several vulnerabilities were discovered in qemu, a fast processor emulator. - CVE-2015-3209 Matt Tait of Google last seen 2020-06-01 modified 2020-06-02 plugin id 84167 published 2015-06-15 reporter This script is Copyright (C) 2015-2018 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/84167 title Debian DSA-3284-1 : qemu - security update NASL family Debian Local Security Checks NASL id DEBIAN_DSA-3286.NASL description Multiple security issues have been found in the Xen virtualisation solution : - CVE-2015-3209 Matt Tait discovered a flaw in the way QEMU last seen 2020-06-01 modified 2020-06-02 plugin id 84169 published 2015-06-15 reporter This script is Copyright (C) 2015-2018 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/84169 title Debian DSA-3286-1 : xen - security update NASL family Fedora Local Security Checks NASL id FEDORA_2015-9466.NASL description Potential unintended writes to host MSI message data field via qemu [XSA-128, CVE-2015-4103], PCI MSI mask bits inadvertently exposed to guests [XSA-129, CVE-2015-4104], Guest triggerable qemu MSI-X pass-through error messages [XSA-130, CVE-2015-4105], Unmediated PCI register access in qemu [XSA-131, CVE-2015-4106] Note that Tenable Network Security has extracted the preceding description block directly from the Fedora security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues. last seen 2020-06-05 modified 2015-06-15 plugin id 84178 published 2015-06-15 reporter This script is Copyright (C) 2015-2020 Tenable Network Security, Inc. source https://www.tenable.com/plugins/nessus/84178 title Fedora 21 : xen-4.4.2-5.fc21 (2015-9466) NASL family SuSE Local Security Checks NASL id SUSE_SU-2015-1157-1.NASL description Xen was updated to fix six security issues : CVE-2015-4103: Potential unintended writes to host MSI message data field via qemu. (XSA-128, bsc#931625) CVE-2015-4104: PCI MSI mask bits inadvertently exposed to guests. (XSA-129, bsc#931626) CVE-2015-4105: Guest triggerable qemu MSI-X pass-through error messages. (XSA-130, bsc#931627) CVE-2015-4106: Unmediated PCI register access in qemu. (XSA-131, bsc#931628) CVE-2015-3209: Heap overflow in qemu pcnet controller allowing guest to host escape. (XSA-135, bsc#932770) CVE-2015-4164: DoS through iret hypercall handler. (XSA-136, bsc#932996) Note that Tenable Network Security has extracted the preceding description block directly from the SUSE security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues. last seen 2020-06-01 modified 2020-06-02 plugin id 84469 published 2015-06-30 reporter This script is Copyright (C) 2015-2019 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/84469 title SUSE SLES11 Security Update : Xen (SUSE-SU-2015:1157-1) NASL family SuSE Local Security Checks NASL id OPENSUSE-2015-435.NASL description Xen was updated to fix eight vulnerabilities. The following vulnerabilities were fixed : - CVE-2015-2751: Certain domctl operations may be abused to lock up the host (XSA-127 boo#922709) - CVE-2015-4103: Potential unintended writes to host MSI message data field via qemu (XSA-128) (boo#931625) - CVE-2015-4104: PCI MSI mask bits inadvertently exposed to guests (XSA-129) (boo#931626) - CVE-2015-4105: Guest triggerable qemu MSI-X pass-through error messages (XSA-130) (boo#931627) - CVE-2015-4106: Unmediated PCI register access in qemu (XSA-131) (boo#931628) - CVE-2015-4163: GNTTABOP_swap_grant_ref operation misbehavior (XSA-134) (boo#932790) - CVE-2015-3209: heap overflow in qemu pcnet controller allowing guest to host escape (XSA-135) (boo#932770) - CVE-2015-4164: DoS through iret hypercall handler (XSA-136) (boo#932996) last seen 2020-06-05 modified 2015-06-23 plugin id 84334 published 2015-06-23 reporter This script is Copyright (C) 2015-2020 Tenable Network Security, Inc. source https://www.tenable.com/plugins/nessus/84334 title openSUSE Security Update : xen (openSUSE-2015-435)
References
- http://lists.fedoraproject.org/pipermail/package-announce/2015-June/160154.html
- http://lists.fedoraproject.org/pipermail/package-announce/2015-June/160171.html
- http://lists.fedoraproject.org/pipermail/package-announce/2015-June/160685.html
- http://lists.opensuse.org/opensuse-security-announce/2015-06/msg00004.html
- http://lists.opensuse.org/opensuse-security-announce/2015-06/msg00007.html
- http://lists.opensuse.org/opensuse-security-announce/2015-06/msg00029.html
- http://lists.opensuse.org/opensuse-security-announce/2015-06/msg00030.html
- http://support.citrix.com/article/CTX201145
- http://www.debian.org/security/2015/dsa-3284
- http://www.debian.org/security/2015/dsa-3286
- http://www.securityfocus.com/bid/74949
- http://www.securitytracker.com/id/1032467
- http://www.ubuntu.com/usn/USN-2630-1
- http://xenbits.xen.org/xsa/advisory-131.html
- https://security.gentoo.org/glsa/201604-03
- https://support.citrix.com/article/CTX206006