Description
A flaw was found in the way qemu v1.3.0 and later (virtio-rng) validates addresses when guest accesses the config space of a virtio device. If the virtio device has zero/small sized config space, such as virtio-rng, a privileged guest user could use this flaw to access the matching host's qemu address space and thus increase their privileges on the host.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| qemu | qemu (virtio-rng) | v1.3.0 and later | — |
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | qemu | 1.5.0+dfsg-1 | — |
| Debian 13 | qemu | 1.5.0+dfsg-1 | — |
| Debian 12 | qemu | 1.5.0+dfsg-1 | — |
References
- https://security-tracker.debian.org/tracker/CVE-2013-2016
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2013-2016
- https://access.redhat.com/security/cve/cve-2013-2016
- http://lists.opensuse.org/opensuse-security-announce/2014-05/msg00002.html
- http://www.openwall.com/lists/oss-security/2013/04/29/5
- http://www.openwall.com/lists/oss-security/2013/04/29/6
- http://www.securityfocus.com/bid/59541
- https://exchange.xforce.ibmcloud.com/vulnerabilities/83850
- https://github.com/qemu/qemu/commit/5f5a1318653c08e435cfa52f60b6a712815b659d