CVE-2014-0148
First published: Wed Mar 19 2014(Updated: )
Qemu before 2.0 block driver for Hyper-V VHDX Images is vulnerable to infinite loops and other potential issues when calculating BAT entries, due to missing bounds checks for block_size and logical_sector_size variables. These are used to derive other fields like 'sectors_per_block' etc. A user able to alter the Qemu disk image could ise this flaw to crash the Qemu instance resulting in DoS.
Credit: secalert@redhat.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| QEMU KVM | <2.0.0 | |
| Red Hat Enterprise Virtualization | =3.0 | |
| Red Hat Enterprise Linux Desktop | =6.0 | |
| Red Hat Enterprise Linux Server EUS | =6.5 | |
| Red Hat OpenStack Platform | =5 | |
| Red Hat Enterprise Linux Server | =6.0 | |
| Red Hat Enterprise Linux Server | =6.5 | |
| Red Hat Enterprise Linux Server | =6.5 | |
| Red Hat Enterprise Linux Workstation | =6.0 |
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Reference Links
- http://git.qemu.org/?p=qemu.git;a=commit;h=1d7678dec4761acdc43439da6ceda41a703ba1a6
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1086712
- https://rhn.redhat.com/errata/RHSA-2014-0421.html
- https://rhn.redhat.com/errata/RHSA-2014-0420.html
- https://rhn.redhat.com/errata/RHSA-2014-0435.html
- https://rhn.redhat.com/errata/RHSA-2014-0434.html
- https://rhn.redhat.com/errata/RHSA-2014-0674.html
- https://bugzilla.redhat.com/show_bug.cgi?id=1078212
- http://git.qemu.org/?p=qemu.git%3Ba=commit%3Bh=1d7678dec4761acdc43439da6ceda41a703ba1a6
- http://rhn.redhat.com/errata/RHSA-2014-0420.html
- http://rhn.redhat.com/errata/RHSA-2014-0421.html
- http://www.openwall.com/lists/oss-security/2014/03/26/8
- https://lists.gnu.org/archive/html/qemu-devel/2014-03/msg04994.html
Frequently Asked Questions
What is the severity of CVE-2014-0148?
The severity of CVE-2014-0148 is classified as medium due to the potential for infinite loops and resource exhaustion.
How do I fix CVE-2014-0148?
To fix CVE-2014-0148, upgrade QEMU to version 2.0 or later to ensure bounds checks are properly implemented.
What software is affected by CVE-2014-0148?
CVE-2014-0148 affects QEMU versions before 2.0 and specific versions of Red Hat virtualization products.
What kind of issues does CVE-2014-0148 cause?
CVE-2014-0148 can cause infinite loops and other operational issues in virtualization environments using vulnerable QEMU versions.
Is CVE-2014-0148 a critical vulnerability?
CVE-2014-0148 is not classified as critical but still poses a significant risk to affected systems.
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