Allocation of Resources Without Limits or Throttling Affecting xen package, versions <4.15.4-r0
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Test your applications- Snyk ID SNYK-ALPINE315-XEN-3136349
- published 20 Nov 2022
- disclosed 1 Nov 2022
Introduced: 1 Nov 2022
CVE-2022-42318 Open this link in a new tabHow to fix?
Upgrade Alpine:3.15
xen
to version 4.15.4-r0 or higher.
NVD Description
Note: Versions mentioned in the description apply only to the upstream xen
package and not the xen
package as distributed by Alpine
.
See How to fix?
for Alpine:3.15
relevant fixed versions and status.
Xenstore: guests can let run xenstored out of memory T[his CNA information record relates to multiple CVEs; the text explains which aspects/vulnerabilities correspond to which CVE.] Malicious guests can cause xenstored to allocate vast amounts of memory, eventually resulting in a Denial of Service (DoS) of xenstored. There are multiple ways how guests can cause large memory allocations in xenstored: - - by issuing new requests to xenstored without reading the responses, causing the responses to be buffered in memory - - by causing large number of watch events to be generated via setting up multiple xenstore watches and then e.g. deleting many xenstore nodes below the watched path - - by creating as many nodes as allowed with the maximum allowed size and path length in as many transactions as possible - - by accessing many nodes inside a transaction