Resource Exhaustion Affecting xen-tools package, versions <4.10.2_04-3.9.1
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-SLES150-XENTOOLS-2759519
- published14 Apr 2022
- disclosed28 Dec 2018
Introduced: 28 Dec 2018
CVE-2018-15470 (opens in a new tab)How to fix?
Upgrade SLES:15.0 xen-tools to version 4.10.2_04-3.9.1 or higher.
NVD Description
Note: Versions mentioned in the description apply only to the upstream xen-tools package and not the xen-tools package as distributed by SLES.
See How to fix? for SLES:15.0 relevant fixed versions and status.
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.