CVE-2018-15470
Last modified
CVE-2018-15470 is a vulnerability of currently unknown severity. 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. EPSS estimates a 0.40% chance of exploitation in the next 30 days.
Description
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.
Metrics
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Xen | Xen | <= 4.11.0 |
References
- http://xenbits.xen.org/xsa/advisory-272.htmlVendor Advisory
- https://security.gentoo.org/glsa/201810-06Third Party Advisory
- http://xenbits.xen.org/xsa/advisory-272.htmlVendor Advisory
- https://security.gentoo.org/glsa/201810-06Third Party Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2018-15470?
How severe is CVE-2018-15470?
How do I fix CVE-2018-15470?
Are you affected by CVE-2018-15470?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST