PT-2012-1531 · Qemu+1 · Qemu-Kvm+1

Nelson Elhage · Published 2011-05-19 · Updated 2023-02-13 · CVE-2011-1751

Positive Technologies (AI Summary)

CVSS v2.0

7.4

High

Base vector

AV:A/AC:M/Au:S/C:C/I:C/A:C

Name of the Vulnerable Software and Affected Versions qemu-kvm (affected versions not specified)

Description The issue is related to the pciej write function in the PIIX4 Power Management emulation, which does not properly check if a device is hotpluggable before unplugging the PCI-ISA bridge. This allows privileged guest users to potentially cause a denial of service, leading to a guest crash, and possibly execute arbitrary code by sending a crafted value to the 0xae08 (PCI EJ BASE) I/O port. The issue is related to a use-after-free problem concerning "active qemu timers."

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

DoS

RCE

Weakness Enumeration

CWE-20

Related Identifiers

CVE-2011-1751

DSA-2241-1

RHSA-2011:0534

RHSA-2011_0534

Affected Products

Red Hat

Qemu-Kvm

References · 23

• https://hermes.opensuse.org/messages/8572547 · Vendor Advisory
• http://secunia.com/advisories/44648 · Vendor Advisory
• http://secunia.com/advisories/44393 · Vendor Advisory
• http://rhn.redhat.com/errata/RHSA-2011-0534.html · Vendor Advisory
• http://secunia.com/advisories/44458 · Vendor Advisory
• http://secunia.com/advisories/44658 · Vendor Advisory
• https://ubuntu.com/usn/USN-1145-1 · Vendor Advisory
• https://linux.oracle.com/errata/ELSA-2011-0534.html · Vendor Advisory
• http://secunia.com/advisories/44660 · Vendor Advisory
• http://secunia.com/advisories/44900 · Vendor Advisory
• http://lists.opensuse.org/opensuse-updates/2011-05/msg00043.html · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2011-1751 · Security Note
• https://github.com/nelhage/virtunoid · Note
• http://openwall.com/lists/oss-security/2011/05/19/2 · Note
• https://access.redhat.com/security/cve/CVE-2011-1750 · Note