Buffer overflow in QEMU - CVE-2015-7295
Published: November 9, 2015 / Updated: August 9, 2020
Vulnerability identifier: #VU40605
CSH Severity: Medium
CVSS v4: 6.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N]
CVE-ID: CVE-2015-7295
CWE-ID: CWE-119
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote non-authenticated attacker to perform service disruption.
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.
Affected software
QEMU
Fedora
qemu
xen
Fedora
qemu
xen
How to mitigate CVE-2015-7295
Install update from vendor's website.
qemu - addressed in versions 2.3.1-7.fc22, 2.4.0.1-1.fc23
xen - addressed in versions 4.4.3-6.fc21, 4.5.1-13.fc22, 4.5.1-13.fc23
xen - addressed in versions 4.4.3-6.fc21, 4.5.1-13.fc22, 4.5.1-13.fc23
External References
- 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