Bug 1141131 (CVE-2014-3633) - CVE-2014-3633 libvirt: qemu: out-of-bounds read access in qemuDomainGetBlockIoTune() due to invalid index
Summary: CVE-2014-3633 libvirt: qemu: out-of-bounds read access in qemuDomainGetBlockI...
Keywords:
Status: CLOSED ERRATA
Alias: CVE-2014-3633
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
URL:
Whiteboard:
Depends On: 1140724 1141134 1143891 1160278 1160823
Blocks: 1141096 1143903 1160286
TreeView+ depends on / blocked
 
Reported: 2014-09-12 09:37 UTC by Petr Matousek
Modified: 2021-02-17 06:13 UTC (History)
18 users (show)

Fixed In Version:
Doc Type: Bug Fix
Doc Text:
An out-of-bounds read flaw was found in the way libvirt's qemuDomainGetBlockIoTune() function looked up the disk index in a non-persistent (live) disk configuration while a persistent disk configuration was being indexed. A remote attacker able to establish a read-only connection to libvirtd could use this flaw to crash libvirtd or, potentially, leak memory from the libvirtd process.
Clone Of:
Environment:
Last Closed: 2014-11-18 21:49:43 UTC


Attachments (Terms of Use)


Links
System ID Private Priority Status Summary Last Updated
Red Hat Bugzilla 1162721 1 None None None 2021-01-20 06:05:38 UTC
Red Hat Product Errata RHSA-2014:1352 0 normal SHIPPED_LIVE Moderate: libvirt security and bug fix update 2014-10-01 23:11:16 UTC
Red Hat Product Errata RHSA-2014:1873 0 normal SHIPPED_LIVE Moderate: libvirt security and bug fix update 2014-11-18 23:08:55 UTC

Internal Links: 1162721

Description Petr Matousek 2014-09-12 09:37:10 UTC
It was found that when a disk is attached to a disk "live" (thus not
written into the persistent configuration) and then the statistics for
the disks are requested from the persistent configuration, index to
the array is determined from the live configuration but used in the
persistent.

A remote attacker able to establish a read-only connection to libvirtd
could use this flaw to crash libvirtd or, potentially, leak memory from
the libvirtd process.

Acknowledgements:

This issue was discovered by Luyao Huang of Red Hat.

Comment 1 Petr Matousek 2014-09-12 09:38:43 UTC
Statement:

This issue does not affect the versions of libvirt packages as shipped with
Red Hat Enterprise Linux 5.

This issue does affect the versions of libvirt packages as shipped with Red Hat
Enterprise Linux 6 and 7. Future updates may address this issue in the
respective Red Hat Enterprise Linux releases.

Comment 5 Martin Prpič 2014-09-30 15:37:28 UTC
IssueDescription:

An out-of-bounds read flaw was found in the way libvirt's qemuDomainGetBlockIoTune() function looked up the disk index in a non-persistent (live) disk configuration while a persistent disk configuration was being indexed. A remote attacker able to establish a read-only connection to libvirtd could use this flaw to crash libvirtd or, potentially, leak memory from the libvirtd process.

Comment 6 errata-xmlrpc 2014-10-01 19:11:33 UTC
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 7

Via RHSA-2014:1352 https://rhn.redhat.com/errata/RHSA-2014-1352.html

Comment 8 Petr Matousek 2014-11-05 17:32:40 UTC
Created libvirt tracking bugs for this issue:

Affects: fedora-all [bug 1160823]

Comment 9 errata-xmlrpc 2014-11-18 18:09:11 UTC
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 6

Via RHSA-2014:1873 https://rhn.redhat.com/errata/RHSA-2014-1873.html

Comment 10 Fedora Update System 2014-11-22 12:37:10 UTC
libvirt-1.1.3.8-1.fc20 has been pushed to the Fedora 20 stable repository.  If problems still persist, please make note of it in this bug report.


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