VDB
CVE-2018-15470
CVE-2018-15470
PUBLISHED
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.
EPSS 0.18% · 39.8th percentile
Risk Scores
EPSS Score
0.18%
39.8th percentile
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Ubuntu:18.04:LTS | xen | 4.9.0-0ubuntu3, 4.9.0-0ubuntu4, 4.9.2-0ubuntu1 |
| Ubuntu:16.04:LTS | xen | 4.6.0-1ubuntu4.1, 4.6.0-1ubuntu4.2, 4.6.0-1ubuntu4.3 |
Timeline
- Aug 17, 2018 CVE Published
- Apr 14, 2021 EPSS Score
- Jun 23, 2021 EPSS Score
- Aug 24, 2021 EPSS Score
- Oct 26, 2021 EPSS Score
- Dec 27, 2021 EPSS Score
- Feb 28, 2022 EPSS Score
- May 2, 2022 EPSS Score
- Jul 3, 2022 EPSS Score
- Sep 5, 2022 EPSS Score
- Nov 6, 2022 EPSS Score
- Jan 8, 2023 EPSS Score
References
- https://ubuntu.com/security/CVE-2018-15470 third-party-advisory
- https://xenbits.xen.org/xsa/advisory-272.html third-party-advisory
- https://www.cve.org/CVERecord?id=CVE-2018-15470 third-party-advisory