CVE-2015-7504: Buffer Overflow
First published: Mon Oct 16 2017(Updated: )
Heap-based buffer overflow in the pcnet_receive function in hw/net/pcnet.c in QEMU allows guest OS administrators to cause a denial of service (instance crash) or possibly execute arbitrary code via a series of packets in loopback mode.
Credit: secalert@redhat.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| QEMU KVM | <=2.4.1 | |
| QEMU KVM | =2.5.0-rc0 | |
| QEMU KVM | =2.5.0-rc1 | |
| QEMU KVM | =2.5.0-rc2 | |
| Xen xen-unstable | ||
| Debian GNU/Linux | =7.0 | |
| Debian GNU/Linux | =8.0 |
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Reference Links
- http://rhn.redhat.com/errata/RHSA-2015-2694.html
- http://rhn.redhat.com/errata/RHSA-2015-2695.html
- http://rhn.redhat.com/errata/RHSA-2015-2696.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/2015/11/30/2
- http://www.securityfocus.com/bid/78227
- http://www.securitytracker.com/id/1034268
- http://xenbits.xen.org/xsa/advisory-162.html
- https://lists.gnu.org/archive/html/qemu-devel/2015-11/msg06342.html
- https://security.gentoo.org/glsa/201602-01
- https://security.gentoo.org/glsa/201604-03
Frequently Asked Questions
What is the severity of CVE-2015-7504?
CVE-2015-7504 has a high severity due to its potential for causing denial of service and executing arbitrary code.
How do I fix CVE-2015-7504?
To fix CVE-2015-7504, upgrade QEMU to versions later than 2.4.1 and include all security patches.
What causes CVE-2015-7504?
CVE-2015-7504 is caused by a heap-based buffer overflow in the pcnet_receive function within QEMU.
Which systems are affected by CVE-2015-7504?
CVE-2015-7504 affects QEMU versions up to 2.4.1 and specific release candidates of version 2.5.0.
Can CVE-2015-7504 lead to remote code execution?
Yes, CVE-2015-7504 can potentially allow an attacker to execute arbitrary code through specially crafted packets.
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