Vulnerabilities > CVE-2011-1751 - Improper Input Validation vulnerability in Qemu
Attack vector
UNKNOWN Attack complexity
UNKNOWN Privileges required
UNKNOWN Confidentiality impact
UNKNOWN Integrity impact
UNKNOWN Availability impact
UNKNOWN Summary
The pciej_write function in hw/acpi_piix4.c in the PIIX4 Power Management emulation in qemu-kvm does not check if a device is hotpluggable before unplugging the PCI-ISA bridge, which allows privileged guest users to cause a denial of service (guest crash) and possibly execute arbitrary code by sending a crafted value to the 0xae08 (PCI_EJ_BASE) I/O port, which leads to a use-after-free related to "active qemu timers."
Vulnerable Configurations
Common Weakness Enumeration (CWE)
Common Attack Pattern Enumeration and Classification (CAPEC)
- Buffer Overflow via Environment Variables This attack pattern involves causing a buffer overflow through manipulation of environment variables. Once the attacker finds that they can modify an environment variable, they may try to overflow associated buffers. This attack leverages implicit trust often placed in environment variables.
- Server Side Include (SSI) Injection An attacker can use Server Side Include (SSI) Injection to send code to a web application that then gets executed by the web server. Doing so enables the attacker to achieve similar results to Cross Site Scripting, viz., arbitrary code execution and information disclosure, albeit on a more limited scale, since the SSI directives are nowhere near as powerful as a full-fledged scripting language. Nonetheless, the attacker can conveniently gain access to sensitive files, such as password files, and execute shell commands.
- Cross Zone Scripting An attacker is able to cause a victim to load content into their web-browser that bypasses security zone controls and gain access to increased privileges to execute scripting code or other web objects such as unsigned ActiveX controls or applets. This is a privilege elevation attack targeted at zone-based web-browser security. In a zone-based model, pages belong to one of a set of zones corresponding to the level of privilege assigned to that page. Pages in an untrusted zone would have a lesser level of access to the system and/or be restricted in the types of executable content it was allowed to invoke. In a cross-zone scripting attack, a page that should be assigned to a less privileged zone is granted the privileges of a more trusted zone. This can be accomplished by exploiting bugs in the browser, exploiting incorrect configuration in the zone controls, through a cross-site scripting attack that causes the attackers' content to be treated as coming from a more trusted page, or by leveraging some piece of system functionality that is accessible from both the trusted and less trusted zone. This attack differs from "Restful Privilege Escalation" in that the latter correlates to the inadequate securing of RESTful access methods (such as HTTP DELETE) on the server, while cross-zone scripting attacks the concept of security zones as implemented by a browser.
- Cross Site Scripting through Log Files An attacker may leverage a system weakness where logs are susceptible to log injection to insert scripts into the system's logs. If these logs are later viewed by an administrator through a thin administrative interface and the log data is not properly HTML encoded before being written to the page, the attackers' scripts stored in the log will be executed in the administrative interface with potentially serious consequences. This attack pattern is really a combination of two other attack patterns: log injection and stored cross site scripting.
- Command Line Execution through SQL Injection An attacker uses standard SQL injection methods to inject data into the command line for execution. This could be done directly through misuse of directives such as MSSQL_xp_cmdshell or indirectly through injection of data into the database that would be interpreted as shell commands. Sometime later, an unscrupulous backend application (or could be part of the functionality of the same application) fetches the injected data stored in the database and uses this data as command line arguments without performing proper validation. The malicious data escapes that data plane by spawning new commands to be executed on the host.
Nessus
NASL family Ubuntu Local Security Checks NASL id UBUNTU_USN-1145-1.NASL description It was discovered that QEMU did not properly perform validation of I/O operations from the guest which could lead to heap corruption. An attacker could exploit this to cause a denial of service of the guest or possibly execute code with the privileges of the user invoking the program. (CVE-2011-1750) Nelson Elhage discoverd that QEMU did not properly handle memory when removing ISA devices. An attacker could exploit this to cause a denial of service of the guest or possibly execute code with the privileges of the user invoking the program. (CVE-2011-1751) When using QEMU with libvirt or virtualization management software based on libvirt such as Eucalyptus and OpenStack, QEMU guests are individually isolated by an AppArmor profile by default in Ubuntu. 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 55108 published 2011-06-13 reporter Ubuntu Security Notice (C) 2011-2019 Canonical, Inc. / NASL script (C) 2011-2019 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/55108 title Ubuntu 10.04 LTS / 10.10 / 11.04 : qemu-kvm vulnerabilities (USN-1145-1) code # # (C) Tenable Network Security, Inc. # # The descriptive text and package checks in this plugin were # extracted from Ubuntu Security Notice USN-1145-1. The text # itself is copyright (C) Canonical, Inc. See # <http://www.ubuntu.com/usn/>. Ubuntu(R) is a registered # trademark of Canonical, Inc. # include("compat.inc"); if (description) { script_id(55108); script_version("1.10"); script_cvs_date("Date: 2019/09/19 12:54:27"); script_cve_id("CVE-2011-1750", "CVE-2011-1751"); script_bugtraq_id(47546); script_xref(name:"USN", value:"1145-1"); script_name(english:"Ubuntu 10.04 LTS / 10.10 / 11.04 : qemu-kvm vulnerabilities (USN-1145-1)"); script_summary(english:"Checks dpkg output for updated packages."); script_set_attribute( attribute:"synopsis", value: "The remote Ubuntu host is missing one or more security-related patches." ); script_set_attribute( attribute:"description", value: "It was discovered that QEMU did not properly perform validation of I/O operations from the guest which could lead to heap corruption. An attacker could exploit this to cause a denial of service of the guest or possibly execute code with the privileges of the user invoking the program. (CVE-2011-1750) Nelson Elhage discoverd that QEMU did not properly handle memory when removing ISA devices. An attacker could exploit this to cause a denial of service of the guest or possibly execute code with the privileges of the user invoking the program. (CVE-2011-1751) When using QEMU with libvirt or virtualization management software based on libvirt such as Eucalyptus and OpenStack, QEMU guests are individually isolated by an AppArmor profile by default in Ubuntu. 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." ); script_set_attribute( attribute:"see_also", value:"https://usn.ubuntu.com/1145-1/" ); script_set_attribute( attribute:"solution", value: "Update the affected qemu-kvm, qemu-kvm-extras and / or qemu-kvm-extras-static packages." ); script_set_cvss_base_vector("CVSS2#AV:A/AC:M/Au:S/C:C/I:C/A:C"); script_set_cvss_temporal_vector("CVSS2#E:ND/RL:OF/RC:C"); script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available"); script_set_attribute(attribute:"exploit_available", value:"false"); script_set_attribute(attribute:"plugin_type", value:"local"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:qemu-kvm"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:qemu-kvm-extras"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:qemu-kvm-extras-static"); script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:10.04:-:lts"); script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:10.10"); script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:11.04"); script_set_attribute(attribute:"vuln_publication_date", value:"2012/06/21"); script_set_attribute(attribute:"patch_publication_date", value:"2011/06/09"); script_set_attribute(attribute:"plugin_publication_date", value:"2011/06/13"); script_set_attribute(attribute:"generated_plugin", value:"current"); script_end_attributes(); script_category(ACT_GATHER_INFO); script_copyright(english:"Ubuntu Security Notice (C) 2011-2019 Canonical, Inc. / NASL script (C) 2011-2019 and is owned by Tenable, Inc. or an Affiliate thereof."); script_family(english:"Ubuntu Local Security Checks"); script_dependencies("ssh_get_info.nasl"); script_require_keys("Host/cpu", "Host/Ubuntu", "Host/Ubuntu/release", "Host/Debian/dpkg-l"); exit(0); } include("audit.inc"); include("ubuntu.inc"); include("misc_func.inc"); if ( ! get_kb_item("Host/local_checks_enabled") ) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED); release = get_kb_item("Host/Ubuntu/release"); if ( isnull(release) ) audit(AUDIT_OS_NOT, "Ubuntu"); release = chomp(release); if (! preg(pattern:"^(10\.04|10\.10|11\.04)$", string:release)) audit(AUDIT_OS_NOT, "Ubuntu 10.04 / 10.10 / 11.04", "Ubuntu " + release); if ( ! get_kb_item("Host/Debian/dpkg-l") ) audit(AUDIT_PACKAGE_LIST_MISSING); cpu = get_kb_item("Host/cpu"); if (isnull(cpu)) audit(AUDIT_UNKNOWN_ARCH); if ("x86_64" >!< cpu && cpu !~ "^i[3-6]86$") audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, "Ubuntu", cpu); flag = 0; if (ubuntu_check(osver:"10.04", pkgname:"qemu-kvm", pkgver:"0.12.3+noroms-0ubuntu9.9")) flag++; if (ubuntu_check(osver:"10.04", pkgname:"qemu-kvm-extras", pkgver:"0.12.3+noroms-0ubuntu9.9")) flag++; if (ubuntu_check(osver:"10.04", pkgname:"qemu-kvm-extras-static", pkgver:"0.12.3+noroms-0ubuntu9.9")) flag++; if (ubuntu_check(osver:"10.10", pkgname:"qemu-kvm", pkgver:"0.12.5+noroms-0ubuntu7.5")) flag++; if (ubuntu_check(osver:"10.10", pkgname:"qemu-kvm-extras", pkgver:"0.12.5+noroms-0ubuntu7.5")) flag++; if (ubuntu_check(osver:"10.10", pkgname:"qemu-kvm-extras-static", pkgver:"0.12.5+noroms-0ubuntu7.5")) flag++; if (ubuntu_check(osver:"11.04", pkgname:"qemu-kvm", pkgver:"0.14.0+noroms-0ubuntu4.1")) flag++; if (flag) { security_report_v4( port : 0, severity : SECURITY_HOLE, extra : ubuntu_report_get() ); exit(0); } else { tested = ubuntu_pkg_tests_get(); if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested); else audit(AUDIT_PACKAGE_NOT_INSTALLED, "qemu-kvm / qemu-kvm-extras / qemu-kvm-extras-static"); }
NASL family SuSE Local Security Checks NASL id SUSE_11_3_KVM-110518.NASL description By causing a hot-unplug of the pci-isa bridge from within guests the qemu process could access already freed memory. A privileged user inside the guest could exploit that to crash the guest instance or potentially execute arbitrary code on the host (CVE-2011-1751). The virtio-blk driver did not properly validate read and write request. A privileged user inside the guest could exploit that to cause a heap corruption and crash the guest instance or potentially execute arbitrary code on the host (CVE-2011-1750). last seen 2020-06-01 modified 2020-06-02 plugin id 75566 published 2014-06-13 reporter This script is Copyright (C) 2014-2019 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/75566 title openSUSE Security Update : kvm (openSUSE-SU-2011:0510-1) code #%NASL_MIN_LEVEL 80502 # # (C) Tenable Network Security, Inc. # # The descriptive text and package checks in this plugin were # extracted from openSUSE Security Update kvm-4582. # # The text description of this plugin is (C) SUSE LLC. # include("compat.inc"); if (description) { script_id(75566); script_version("1.4"); script_cvs_date("Date: 2019/10/25 13:36:41"); script_cve_id("CVE-2011-1750", "CVE-2011-1751"); script_name(english:"openSUSE Security Update : kvm (openSUSE-SU-2011:0510-1)"); script_summary(english:"Check for the kvm-4582 patch"); script_set_attribute( attribute:"synopsis", value:"The remote openSUSE host is missing a security update." ); script_set_attribute( attribute:"description", value: "By causing a hot-unplug of the pci-isa bridge from within guests the qemu process could access already freed memory. A privileged user inside the guest could exploit that to crash the guest instance or potentially execute arbitrary code on the host (CVE-2011-1751). The virtio-blk driver did not properly validate read and write request. A privileged user inside the guest could exploit that to cause a heap corruption and crash the guest instance or potentially execute arbitrary code on the host (CVE-2011-1750)." ); script_set_attribute( attribute:"see_also", value:"https://bugzilla.novell.com/show_bug.cgi?id=689895" ); script_set_attribute( attribute:"see_also", value:"https://bugzilla.novell.com/show_bug.cgi?id=690781" ); script_set_attribute( attribute:"see_also", value:"https://lists.opensuse.org/opensuse-updates/2011-05/msg00043.html" ); script_set_attribute(attribute:"solution", value:"Update the affected kvm package."); script_set_cvss_base_vector("CVSS2#AV:A/AC:M/Au:S/C:C/I:C/A:C"); script_set_attribute(attribute:"plugin_type", value:"local"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:kvm"); script_set_attribute(attribute:"cpe", value:"cpe:/o:novell:opensuse:11.3"); script_set_attribute(attribute:"patch_publication_date", value:"2011/05/18"); script_set_attribute(attribute:"plugin_publication_date", value:"2014/06/13"); script_end_attributes(); script_category(ACT_GATHER_INFO); script_copyright(english:"This script is Copyright (C) 2014-2019 and is owned by Tenable, Inc. or an Affiliate thereof."); script_family(english:"SuSE Local Security Checks"); script_dependencies("ssh_get_info.nasl"); script_require_keys("Host/local_checks_enabled", "Host/SuSE/release", "Host/SuSE/rpm-list", "Host/cpu"); exit(0); } include("audit.inc"); include("global_settings.inc"); include("rpm.inc"); if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED); release = get_kb_item("Host/SuSE/release"); if (isnull(release) || release =~ "^(SLED|SLES)") audit(AUDIT_OS_NOT, "openSUSE"); if (release !~ "^(SUSE11\.3)$") audit(AUDIT_OS_RELEASE_NOT, "openSUSE", "11.3", release); if (!get_kb_item("Host/SuSE/rpm-list")) audit(AUDIT_PACKAGE_LIST_MISSING); ourarch = get_kb_item("Host/cpu"); if (!ourarch) audit(AUDIT_UNKNOWN_ARCH); if (ourarch !~ "^(i586|i686|x86_64)$") audit(AUDIT_ARCH_NOT, "i586 / i686 / x86_64", ourarch); flag = 0; if ( rpm_check(release:"SUSE11.3", reference:"kvm-0.12.5-1.4.1") ) flag++; if (flag) { if (report_verbosity > 0) security_hole(port:0, extra:rpm_report_get()); else security_hole(0); exit(0); } else { tested = pkg_tests_get(); if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested); else audit(AUDIT_PACKAGE_NOT_INSTALLED, "kvm"); }
NASL family Red Hat Local Security Checks NASL id REDHAT-RHSA-2011-0534.NASL description Updated qemu-kvm packages that fix two security issues, several bugs, and add various enhancements are now available for Red Hat Enterprise Linux 6. The Red Hat Security Response Team has rated this update as having important security impact. Common Vulnerability Scoring System (CVSS) base scores, which give detailed severity ratings, are available for each vulnerability from the CVE links in the References section. KVM (Kernel-based Virtual Machine) is a full virtualization solution for Linux on AMD64 and Intel 64 systems. qemu-kvm is the user-space component for running virtual machines using KVM. It was found that the virtio-blk driver in qemu-kvm did not properly validate read and write requests from guests. A privileged guest user could use this flaw to crash the guest or, possibly, execute arbitrary code on the host. (CVE-2011-1750) It was found that the PIIX4 Power Management emulation layer in qemu-kvm did not properly check for hot plug eligibility during device removals. A privileged guest user could use this flaw to crash the guest or, possibly, execute arbitrary code on the host. (CVE-2011-1751) Red Hat would like to thank Nelson Elhage for reporting CVE-2011-1751. This update also fixes several bugs and adds various enhancements. Documentation for these bug fixes and enhancements will be available shortly from the Technical Notes document, linked to in the References section. All users of qemu-kvm should upgrade to these updated packages, which contain backported patches to resolve these issues, and fix the bugs and add the enhancements noted in the Technical Notes. After installing this update, shut down all running virtual machines. Once all virtual machines have shut down, start them again for this update to take effect. last seen 2020-06-01 modified 2020-06-02 plugin id 63980 published 2013-01-24 reporter This script is Copyright (C) 2013-2019 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/63980 title RHEL 6 : qemu-kvm (RHSA-2011:0534) code #%NASL_MIN_LEVEL 80502 # # (C) Tenable Network Security, Inc. # # The descriptive text and package checks in this plugin were # extracted from Red Hat Security Advisory RHSA-2011:0534. The text # itself is copyright (C) Red Hat, Inc. # include("compat.inc"); if (description) { script_id(63980); script_version("1.13"); script_cvs_date("Date: 2019/10/25 13:36:16"); script_cve_id("CVE-2011-1750", "CVE-2011-1751"); script_xref(name:"RHSA", value:"2011:0534"); script_name(english:"RHEL 6 : qemu-kvm (RHSA-2011:0534)"); script_summary(english:"Checks the rpm output for the updated packages"); script_set_attribute( attribute:"synopsis", value:"The remote Red Hat host is missing one or more security updates." ); script_set_attribute( attribute:"description", value: "Updated qemu-kvm packages that fix two security issues, several bugs, and add various enhancements are now available for Red Hat Enterprise Linux 6. The Red Hat Security Response Team has rated this update as having important security impact. Common Vulnerability Scoring System (CVSS) base scores, which give detailed severity ratings, are available for each vulnerability from the CVE links in the References section. KVM (Kernel-based Virtual Machine) is a full virtualization solution for Linux on AMD64 and Intel 64 systems. qemu-kvm is the user-space component for running virtual machines using KVM. It was found that the virtio-blk driver in qemu-kvm did not properly validate read and write requests from guests. A privileged guest user could use this flaw to crash the guest or, possibly, execute arbitrary code on the host. (CVE-2011-1750) It was found that the PIIX4 Power Management emulation layer in qemu-kvm did not properly check for hot plug eligibility during device removals. A privileged guest user could use this flaw to crash the guest or, possibly, execute arbitrary code on the host. (CVE-2011-1751) Red Hat would like to thank Nelson Elhage for reporting CVE-2011-1751. This update also fixes several bugs and adds various enhancements. Documentation for these bug fixes and enhancements will be available shortly from the Technical Notes document, linked to in the References section. All users of qemu-kvm should upgrade to these updated packages, which contain backported patches to resolve these issues, and fix the bugs and add the enhancements noted in the Technical Notes. After installing this update, shut down all running virtual machines. Once all virtual machines have shut down, start them again for this update to take effect." ); script_set_attribute( attribute:"see_also", value:"https://access.redhat.com/security/cve/cve-2011-1750" ); script_set_attribute( attribute:"see_also", value:"https://access.redhat.com/security/cve/cve-2011-1751" ); # http://docs.redhat.com/docs/en-US/Red_Hat_Enterprise_Linux/6/html-single/ script_set_attribute( attribute:"see_also", value:"http://www.nessus.org/u?d2334068" ); script_set_attribute( attribute:"see_also", value:"https://access.redhat.com/errata/RHSA-2011:0534" ); script_set_attribute(attribute:"solution", value:"Update the affected packages."); script_set_cvss_base_vector("CVSS2#AV:A/AC:M/Au:S/C:C/I:C/A:C"); script_set_attribute(attribute:"plugin_type", value:"local"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:qemu-img"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:qemu-kvm"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:qemu-kvm-debuginfo"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:qemu-kvm-tools"); script_set_attribute(attribute:"cpe", value:"cpe:/o:redhat:enterprise_linux:6"); script_set_attribute(attribute:"vuln_publication_date", value:"2012/06/21"); script_set_attribute(attribute:"patch_publication_date", value:"2011/05/19"); script_set_attribute(attribute:"plugin_publication_date", value:"2013/01/24"); script_set_attribute(attribute:"generated_plugin", value:"current"); script_end_attributes(); script_category(ACT_GATHER_INFO); script_copyright(english:"This script is Copyright (C) 2013-2019 and is owned by Tenable, Inc. or an Affiliate thereof."); script_family(english:"Red Hat Local Security Checks"); script_dependencies("ssh_get_info.nasl"); script_require_keys("Host/local_checks_enabled", "Host/RedHat/release", "Host/RedHat/rpm-list", "Host/cpu"); exit(0); } include("audit.inc"); include("global_settings.inc"); include("misc_func.inc"); include("rpm.inc"); if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED); release = get_kb_item("Host/RedHat/release"); if (isnull(release) || "Red Hat" >!< release) audit(AUDIT_OS_NOT, "Red Hat"); os_ver = pregmatch(pattern: "Red Hat Enterprise Linux.*release ([0-9]+(\.[0-9]+)?)", string:release); if (isnull(os_ver)) audit(AUDIT_UNKNOWN_APP_VER, "Red Hat"); os_ver = os_ver[1]; if (! preg(pattern:"^6([^0-9]|$)", string:os_ver)) audit(AUDIT_OS_NOT, "Red Hat 6.x", "Red Hat " + os_ver); if (!get_kb_item("Host/RedHat/rpm-list")) audit(AUDIT_PACKAGE_LIST_MISSING); cpu = get_kb_item("Host/cpu"); if (isnull(cpu)) audit(AUDIT_UNKNOWN_ARCH); if ("x86_64" >!< cpu && cpu !~ "^i[3-6]86$" && "s390" >!< cpu) audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, "Red Hat", cpu); if ("x86_64" >!< cpu) audit(AUDIT_ARCH_NOT, "x86_64", cpu); yum_updateinfo = get_kb_item("Host/RedHat/yum-updateinfo"); if (!empty_or_null(yum_updateinfo)) { rhsa = "RHSA-2011:0534"; yum_report = redhat_generate_yum_updateinfo_report(rhsa:rhsa); if (!empty_or_null(yum_report)) { security_report_v4( port : 0, severity : SECURITY_HOLE, extra : yum_report ); exit(0); } else { audit_message = "affected by Red Hat security advisory " + rhsa; audit(AUDIT_OS_NOT, audit_message); } } else { flag = 0; if (rpm_check(release:"RHEL6", cpu:"x86_64", reference:"qemu-img-0.12.1.2-2.160.el6")) flag++; if (rpm_check(release:"RHEL6", cpu:"x86_64", reference:"qemu-kvm-0.12.1.2-2.160.el6")) flag++; if (rpm_check(release:"RHEL6", cpu:"x86_64", reference:"qemu-kvm-debuginfo-0.12.1.2-2.160.el6")) flag++; if (rpm_check(release:"RHEL6", cpu:"x86_64", reference:"qemu-kvm-tools-0.12.1.2-2.160.el6")) flag++; if (flag) { security_report_v4( port : 0, severity : SECURITY_HOLE, extra : rpm_report_get() + redhat_report_package_caveat() ); exit(0); } else { tested = pkg_tests_get(); if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested); else audit(AUDIT_PACKAGE_NOT_INSTALLED, "qemu-img / qemu-kvm / qemu-kvm-debuginfo / qemu-kvm-tools"); } }
NASL family SuSE Local Security Checks NASL id SUSE_11_KVM-110518.NASL description The following bugs have been fixed : - By causing a hot-unplug of the pci-isa bridge from within guests the qemu process could access already freed memory. A privileged user inside the guest could exploit that to crash the guest instance or potentially execute arbitrary code on the host. (CVE-2011-1751) - The virtio-blk driver did not properly validate read and write request. A privileged user inside the guest could exploit that to cause a heap corruption and crash the guest instance or potentially execute arbitrary code on the host. (CVE-2011-1750) last seen 2020-06-01 modified 2020-06-02 plugin id 54640 published 2011-05-25 reporter This script is Copyright (C) 2011-2019 Tenable Network Security, Inc. source https://www.tenable.com/plugins/nessus/54640 title SuSE 11.1 Security Update : kvm (SAT Patch Number 4574) NASL family SuSE Local Security Checks NASL id SUSE_11_4_KVM-110518.NASL description By causing a hot-unplug of the pci-isa bridge from within guests the qemu process could access already freed memory. A privileged user inside the guest could exploit that to crash the guest instance or potentially execute arbitrary code on the host (CVE-2011-1751). The virtio-blk driver did not properly validate read and write request. A privileged user inside the guest could exploit that to cause a heap corruption and crash the guest instance or potentially execute arbitrary code on the host (CVE-2011-1750). last seen 2020-06-01 modified 2020-06-02 plugin id 75887 published 2014-06-13 reporter This script is Copyright (C) 2014-2019 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/75887 title openSUSE Security Update : kvm (openSUSE-SU-2011:0510-1) NASL family Gentoo Local Security Checks NASL id GENTOO_GLSA-201210-04.NASL description The remote host is affected by the vulnerability described in GLSA-201210-04 (qemu-kvm: Multiple vulnerabilities) Multiple vulnerabilities have been discovered in qemu-kvm. Please review the CVE identifiers referenced below for details. Impact : These vulnerabilities allow a remote attacker to cause a Denial of Service condition on the host server or qemu process, might allow for arbitrary code execution or a symlink attack when qemu-kvm is in snapshot mode. Workaround : There is no known workaround at this time. last seen 2020-06-01 modified 2020-06-02 plugin id 62634 published 2012-10-19 reporter This script is Copyright (C) 2012-2018 Tenable Network Security, Inc. source https://www.tenable.com/plugins/nessus/62634 title GLSA-201210-04 : qemu-kvm: Multiple vulnerabilities NASL family Debian Local Security Checks NASL id DEBIAN_DSA-2241.NASL description Nelson Elhage discovered that incorrect memory handling during the removal of ISA devices in KVM, a solution for full virtualization on x86 hardware, could lead to denial of service or the execution of arbitrary code. last seen 2020-03-17 modified 2011-06-10 plugin id 55029 published 2011-06-10 reporter This script is Copyright (C) 2011-2020 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/55029 title Debian DSA-2241-1 : qemu-kvm - implementation error NASL family Scientific Linux Local Security Checks NASL id SL_20110519_QEMU_KVM_ON_SL6_X.NASL description KVM (Kernel-based Virtual Machine) is a full virtualization solution for Linux on AMD64 and Intel 64 systems. qemu-kvm is the user-space component for running virtual machines using KVM. It was found that the virtio-blk driver in qemu-kvm did not properly validate read and write requests from guests. A privileged guest user could use this flaw to crash the guest or, possibly, execute arbitrary code on the host. (CVE-2011-1750) It was found that the PIIX4 Power Management emulation layer in qemu-kvm did not properly check for hot plug eligibility during device removals. A privileged guest user could use this flaw to crash the guest or, possibly, execute arbitrary code on the host. (CVE-2011-1751) This update also fixes several bugs and adds various enhancements. All users of qemu-kvm should upgrade to these updated packages, which contain backported patches to resolve these issues, and fix the bugs and add the enhancements. After installing this update, shut down all running virtual machines. Once all virtual machines have shut down, start them again for this update to take effect. last seen 2020-06-01 modified 2020-06-02 plugin id 61047 published 2012-08-01 reporter This script is Copyright (C) 2012-2019 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/61047 title Scientific Linux Security Update : qemu-kvm on SL6.x x86_64
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References
- http://secunia.com/advisories/44648
- https://github.com/nelhage/virtunoid
- http://www.osvdb.org/73395
- https://bugzilla.redhat.com/show_bug.cgi?id=699773
- http://blog.nelhage.com/2011/08/breaking-out-of-kvm/
- http://secunia.com/advisories/44393
- http://secunia.com/advisories/44458
- https://hermes.opensuse.org/messages/8572547
- http://secunia.com/advisories/44660
- http://secunia.com/advisories/44900
- http://rhn.redhat.com/errata/RHSA-2011-0534.html
- http://lists.opensuse.org/opensuse-updates/2011-05/msg00043.html
- http://secunia.com/advisories/44658
- http://www.openwall.com/lists/oss-security/2011/05/19/2
- http://lists.nongnu.org/archive/html/qemu-devel/2011-05/msg01810.html
- http://www.securityfocus.com/bid/47927
- https://www.ubuntu.com/usn/USN-1145-1/
- http://git.kernel.org/?p=virt/kvm/qemu-kvm.git%3Ba=commit%3Bh=505597e4476a6bc219d0ec1362b760d71cb4fdca