CVE-2018-15470

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Summary

CVECVE-2018-15470
StatePUBLIC
Assigner[email protected]
Source PriorityCVE Program / NVD first with legacy fallback
Published2018-08-17 18:29:00 UTC
Updated2018-11-13 11:29:00 UTC
DescriptionAn 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.

Risk And Classification

Problem Types: CWE-400

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Operating System Xen Xen All All All All

References

ReferenceSourceLinkTags
[SECURITY] [DLA 1577-1] xen security update MLIST lists.debian.org
Xen: Multiple vulnerabilities (GLSA 201810-06) — Gentoo security GENTOO security.gentoo.org Third Party Advisory
XSA-272 - Xen Security Advisories MISC xenbits.xen.org Vendor Advisory
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Legacy QID Mappings

  • 500751 Alpine Linux Security Update for xen
  • 504528 Alpine Linux Security Update for xen
  • 710221 Gentoo Linux Xen Multiple Vulnerabilities (GLSA 201810-06)
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