CVE-2015-7295: Buffer Overflow
First published: Mon Nov 09 2015(Updated: )
hw/virtio/virtio.c in the Virtual Network Device (virtio-net) support in QEMU, when big or mergeable receive buffers are not supported, allows remote attackers to cause a denial of service (guest network consumption) via a flood of jumbo frames on the (1) tuntap or (2) macvtap interface.
Credit: secalert@redhat.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| QEMU | <=2.4.1 | |
| Fedora | =21 | |
| Fedora | =22 | |
| Debian | =7.0 | |
| Debian | =8.0 |
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Reference Links
- http://lists.fedoraproject.org/pipermail/package-announce/2015-October/169624.html
- http://lists.fedoraproject.org/pipermail/package-announce/2015-October/169767.html
- http://lists.fedoraproject.org/pipermail/package-announce/2015-October/169802.html
- http://www.debian.org/security/2016/dsa-3469
- http://www.debian.org/security/2016/dsa-3470
- http://www.debian.org/security/2016/dsa-3471
- http://www.openwall.com/lists/oss-security/2015/09/18/5
- http://www.openwall.com/lists/oss-security/2015/09/18/9
- http://www.securityfocus.com/bid/82672
- https://security.gentoo.org/glsa/201602-01
Frequently Asked Questions
What is the severity of CVE-2015-7295?
CVE-2015-7295 has been classified as a denial of service vulnerability which can potentially disrupt guest network operations.
How do I fix CVE-2015-7295?
To fix CVE-2015-7295, update QEMU to a version later than 2.4.1 where the vulnerability is patched.
What types of interfaces are affected by CVE-2015-7295?
CVE-2015-7295 affects the tuntap and macvtap interfaces in the QEMU environment.
What can an attacker achieve by exploiting CVE-2015-7295?
By exploiting CVE-2015-7295, an attacker can cause denial of service by flooding the network with jumbo frames.
Which versions of Fedora are affected by CVE-2015-7295?
CVE-2015-7295 affects Fedora versions 21 and 22 due to vulnerabilities in the virtio-net support.
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