CVE-2011-4111: Buffer Overflow
First published: Fri Nov 04 2011(Updated: )
A flaw was found in the way QEMU handled VSC_ATR messages when CCID card passthru device was used. A malicious client could use this flaw to crash the QEMU process or, potentially, escalate his privileges.
Credit: secalert@redhat.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Red Hat Enterprise Linux Server Supplementary | =6.1.z | |
| Red Hat Enterprise Linux | =6.0 | |
| QEMU | =1.0-rc1 | |
| QEMU | =1.0-rc2 | |
| QEMU | =1.0 | |
| QEMU | =0.15.0 | |
| QEMU | =1.0-rc3 | |
| QEMU | =0.15.0-rc1 | |
| QEMU | <=0.15.1 | |
| QEMU | =0.15.0-rc2 | |
| =6.0 | ||
| =6.1.z | ||
| <=0.15.1 | ||
| =0.15.0 | ||
| =0.15.0-rc1 | ||
| =0.15.0-rc2 | ||
| =1.0 | ||
| =1.0-rc1 | ||
| =1.0-rc2 | ||
| =1.0-rc3 |
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Reference Links
- https://bugzilla.redhat.com/show_bug.cgi/attachment.cgi?id=532114
- https://bugzilla.redhat.com/show_bug.cgi/attachment.cgi?id=532114&action=edit
- https://rhn.redhat.com/errata/RHSA-2011-1777.html
- https://rhn.redhat.com/errata/RHSA-2011-1801.html
- https://bugzilla.redhat.com/show_bug.cgi?id=751310
- http://git.qemu.org/?p=qemu-stable-0.15.git%3Ba=log
- http://git.qemu.org/?p=qemu.git%3Ba=log%3Bh=refs/heads/stable-1.0
- http://rhn.redhat.com/errata/RHSA-2011-1777.html
- http://rhn.redhat.com/errata/RHSA-2011-1801.html
Frequently Asked Questions
What is the severity of CVE-2011-4111?
CVE-2011-4111 has a high severity rating due to its potential for privilege escalation and crashing the QEMU process.
How do I fix CVE-2011-4111?
To fix CVE-2011-4111, update QEMU to a version that has patched the vulnerability.
What software is affected by CVE-2011-4111?
CVE-2011-4111 affects certain versions of QEMU and Red Hat Enterprise Linux, specifically those listed in the vulnerability details.
Can CVE-2011-4111 be exploited remotely?
Yes, CVE-2011-4111 can potentially be exploited by a malicious client to crash the QEMU process.
What is the nature of the flaw in CVE-2011-4111?
The flaw in CVE-2011-4111 is a buffer overflow in the ccid_card_vscard_handle_message function which can lead to crashes or privilege escalation.
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