CVE-2018-15470
Fixed in a distro release EPSS <1%
An issue was discovered in Xen through 4.11.x. The logic in oxenstored for handling writes depended on the order of evaluation of expressions making up a tuple. As indicated in section 7.7.3 "Operations on data structures" of the OCaml manual, the order of evaluation of subexpressions is not specified. In practice, different implementations behave differently. Thus, oxenstored may not enforce the configured quota-maxentity. This allows a malicious or buggy guest to write as many xenstore entries as it wishes, causing unbounded memory usage in oxenstored. This can lead to a system-wide DoS.
Products: xen
Distro releases
| Release | Package | Fixed in |
|---|---|---|
| Alpine 3.10 | xen | 4.11.1-r0 |
| Alpine 3.11 | xen | 4.11.1-r0 |
| Alpine 3.12 | xen | 4.11.1-r0 |
| Alpine 3.13 | xen | 4.11.1-r0 |
| Alpine 3.14 | xen | 4.11.1-r0 |
| Alpine 3.15 | xen | 4.11.1-r0 |
| Alpine 3.16 | xen | 4.11.1-r0 |
| Alpine 3.17 | xen | 4.11.1-r0 |
| Alpine 3.18 | xen | 4.11.1-r0 |
| Alpine 3.19 | xen | 4.11.1-r0 |
| Alpine 3.20 | xen | 4.11.1-r0 |
| Alpine 3.21 | xen | 4.11.1-r0 |
| Alpine 3.22 | xen | 4.11.1-r0 |
| Alpine 3.23 | xen | 4.11.1-r0 |
| Alpine 3.24 | xen | 4.11.1-r0 |
| Alpine 3.6 | xen | 4.8.5-r0 |
| Alpine 3.7 | xen | 4.9.3-r0 |
| Alpine 3.8 | xen | 4.10.1-r3 |
| Alpine 3.9 | xen | 4.11.1-r0 |
| Debian 12 | xen | 4.11.1~pre.20180911.5acdd26fdc+dfsg-2 |
| Debian 13 | xen | 4.11.1~pre.20180911.5acdd26fdc+dfsg-2 |
| Debian 14 | xen | 4.11.1~pre.20180911.5acdd26fdc+dfsg-2 |
| Debian 8 | xen | 4.4.4lts4-0+deb8u1 |
| Debian 9 | xen | 4.8.4+xsa273+shim4.10.1+xsa273-1+deb9u10 |
| SUSE Linux Enterprise Desktop 12 SP3 | xen | 4.9.3_03-3.44.2 |
| SUSE Linux Enterprise Module for Basesystem 15 | xen | 4.10.2_04-3.9.1 |
| SUSE Linux Enterprise Module for Server Applications 15 | xen | 4.10.2_04-3.9.1 |
| SUSE Linux Enterprise Server 12 SP3 | xen | 4.9.3_03-3.44.2 |
| SUSE Linux Enterprise Server for SAP Applications 12 SP3 | xen | 4.9.3_03-3.44.2 |
| SUSE Linux Enterprise Software Development Kit 12 SP3 | xen | 4.9.3_03-3.44.2 |
| Ubuntu 16.04 LTS | xen | no fix |
| Ubuntu 18.04 LTS | xen | no fix |
| openSUSE Tumbleweed | xen | 4.15.1_01-1.2 |