CVE-2018-15470
CVE-2018-15470
This page contains facts from public vulnerability sources. Check the original advisory before updating.
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.
CVSS 6.5 · Medium · EPSS 0.4% · Fix available
- Published
- Updated
Stack: system
Affected products and versions
n/a
- Versions
- n/a: Affected
No fix published
xen Debian:12
- Affected ranges
- ECOSYSTEM: < 4.11.1~pre.20180911.5acdd26fdc+dfsg-2
Update to 4.11.1~pre.20180911.5acdd26fdc+dfsg-2
xen Debian:13
- Affected ranges
- ECOSYSTEM: < 4.11.1~pre.20180911.5acdd26fdc+dfsg-2
Update to 4.11.1~pre.20180911.5acdd26fdc+dfsg-2
xen Debian:14
- Affected ranges
- ECOSYSTEM: < 4.11.1~pre.20180911.5acdd26fdc+dfsg-2
Update to 4.11.1~pre.20180911.5acdd26fdc+dfsg-2
xen Ubuntu:16.04:LTS
- Versions
- 4.5.1-0ubuntu1
- 4.5.1-0ubuntu2
- 4.6.0-1ubuntu1
- 4.6.0-1ubuntu2
- 4.6.0-1ubuntu4
- 4.6.0-1ubuntu4.1
- 4.6.0-1ubuntu4.2
- 4.6.0-1ubuntu4.3
- 4.6.5-0ubuntu1
- 4.6.5-0ubuntu1.1
- 4.6.5-0ubuntu1.2
- 4.6.5-0ubuntu1.4
- Affected ranges
- ECOSYSTEM: (−∞, +∞)
No fix published
xen Ubuntu:18.04:LTS
- Versions
- 4.9.0-0ubuntu3
- 4.9.0-0ubuntu4
- 4.9.2-0ubuntu1
- Affected ranges
- ECOSYSTEM: (−∞, +∞)
No fix published