CVE-2022-42318 (GCVE-0-2022-42318)
Vulnerability from cvelistv5 – Published: 2022-11-01 00:00 – Updated: 2025-05-05 16:38
VLAI?
Summary
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
Severity ?
No CVSS data available.
CWE
- unknown
Assigner
References
| URL | Tags | |
|---|---|---|
|
|
||
Credits
{'credit_data': {'description': {'description_data': [{'lang': 'eng', 'value': 'This issue was discovered by Julien Grall of Amazon.'}]}}}
{
"containers": {
"adp": [
{
"providerMetadata": {
"dateUpdated": "2024-08-03T13:03:45.914Z",
"orgId": "af854a3a-2127-422b-91ae-364da2661108",
"shortName": "CVE"
},
"references": [
{
"tags": [
"x_transferred"
],
"url": "https://xenbits.xenproject.org/xsa/advisory-326.txt"
},
{
"tags": [
"x_transferred"
],
"url": "http://xenbits.xen.org/xsa/advisory-326.html"
},
{
"name": "DSA-5272",
"tags": [
"vendor-advisory",
"x_transferred"
],
"url": "https://www.debian.org/security/2022/dsa-5272"
},
{
"name": "FEDORA-2022-07438e12df",
"tags": [
"vendor-advisory",
"x_transferred"
],
"url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZLI2NPNEH7CNJO3VZGQNOI4M4EWLNKPZ/"
},
{
"name": "FEDORA-2022-99af00f60e",
"tags": [
"vendor-advisory",
"x_transferred"
],
"url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/YZVXG7OOOXCX6VIPEMLFDPIPUTFAYWPE/"
},
{
"name": "FEDORA-2022-9f51d13fa3",
"tags": [
"vendor-advisory",
"x_transferred"
],
"url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/YTMITQBGC23MSDHUCAPCVGLMVXIBXQTQ/"
}
],
"title": "CVE Program Container"
},
{
"metrics": [
{
"cvssV3_1": {
"attackComplexity": "LOW",
"attackVector": "LOCAL",
"availabilityImpact": "HIGH",
"baseScore": 6.5,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"privilegesRequired": "LOW",
"scope": "CHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H",
"version": "3.1"
}
},
{
"other": {
"content": {
"id": "CVE-2022-42318",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "no"
},
{
"Technical Impact": "partial"
}
],
"role": "CISA Coordinator",
"timestamp": "2025-05-05T16:37:57.931133Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-770",
"description": "CWE-770 Allocation of Resources Without Limits or Throttling",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2025-05-05T16:38:32.706Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"product": "xen",
"vendor": "Xen",
"versions": [
{
"status": "unknown",
"version": "consult Xen advisory XSA-326"
}
]
}
],
"credits": [
{
"lang": "en",
"value": "{\u0027credit_data\u0027: {\u0027description\u0027: {\u0027description_data\u0027: [{\u0027lang\u0027: \u0027eng\u0027, \u0027value\u0027: \u0027This issue was discovered by Julien Grall of Amazon.\u0027}]}}}"
}
],
"descriptions": [
{
"lang": "en",
"value": "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"
}
],
"metrics": [
{
"other": {
"content": {
"description": {
"description_data": [
{
"lang": "eng",
"value": "Unprivileged guests can cause a DoS of xenstored, resulting in the\ninability to create new guests or modify the configuration of running\nguests."
}
]
}
},
"type": "unknown"
}
}
],
"problemTypes": [
{
"descriptions": [
{
"description": "unknown",
"lang": "en",
"type": "text"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2022-11-24T00:00:00.000Z",
"orgId": "23aa2041-22e1-471f-9209-9b7396fa234f",
"shortName": "XEN"
},
"references": [
{
"url": "https://xenbits.xenproject.org/xsa/advisory-326.txt"
},
{
"url": "http://xenbits.xen.org/xsa/advisory-326.html"
},
{
"name": "DSA-5272",
"tags": [
"vendor-advisory"
],
"url": "https://www.debian.org/security/2022/dsa-5272"
},
{
"name": "FEDORA-2022-07438e12df",
"tags": [
"vendor-advisory"
],
"url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZLI2NPNEH7CNJO3VZGQNOI4M4EWLNKPZ/"
},
{
"name": "FEDORA-2022-99af00f60e",
"tags": [
"vendor-advisory"
],
"url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/YZVXG7OOOXCX6VIPEMLFDPIPUTFAYWPE/"
},
{
"name": "FEDORA-2022-9f51d13fa3",
"tags": [
"vendor-advisory"
],
"url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/YTMITQBGC23MSDHUCAPCVGLMVXIBXQTQ/"
}
]
}
},
"cveMetadata": {
"assignerOrgId": "23aa2041-22e1-471f-9209-9b7396fa234f",
"assignerShortName": "XEN",
"cveId": "CVE-2022-42318",
"datePublished": "2022-11-01T00:00:00.000Z",
"dateReserved": "2022-10-03T00:00:00.000Z",
"dateUpdated": "2025-05-05T16:38:32.706Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.1",
"vulnerability-lookup:meta": {
"vulnrichment": {
"containers": "{\"cna\": {\"providerMetadata\": {\"orgId\": \"23aa2041-22e1-471f-9209-9b7396fa234f\", \"shortName\": \"XEN\", \"dateUpdated\": \"2022-11-24T00:00:00.000Z\"}, \"descriptions\": [{\"lang\": \"en\", \"value\": \"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\"}], \"affected\": [{\"vendor\": \"Xen\", \"product\": \"xen\", \"versions\": [{\"version\": \"consult Xen advisory XSA-326\", \"status\": \"unknown\"}]}], \"references\": [{\"url\": \"https://xenbits.xenproject.org/xsa/advisory-326.txt\"}, {\"url\": \"http://xenbits.xen.org/xsa/advisory-326.html\"}, {\"name\": \"DSA-5272\", \"tags\": [\"vendor-advisory\"], \"url\": \"https://www.debian.org/security/2022/dsa-5272\"}, {\"name\": \"FEDORA-2022-07438e12df\", \"tags\": [\"vendor-advisory\"], \"url\": \"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZLI2NPNEH7CNJO3VZGQNOI4M4EWLNKPZ/\"}, {\"name\": \"FEDORA-2022-99af00f60e\", \"tags\": [\"vendor-advisory\"], \"url\": \"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/YZVXG7OOOXCX6VIPEMLFDPIPUTFAYWPE/\"}, {\"name\": \"FEDORA-2022-9f51d13fa3\", \"tags\": [\"vendor-advisory\"], \"url\": \"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/YTMITQBGC23MSDHUCAPCVGLMVXIBXQTQ/\"}], \"credits\": [{\"lang\": \"en\", \"value\": \"{\u0027credit_data\u0027: {\u0027description\u0027: {\u0027description_data\u0027: [{\u0027lang\u0027: \u0027eng\u0027, \u0027value\u0027: \u0027This issue was discovered by Julien Grall of Amazon.\u0027}]}}}\"}], \"metrics\": [{\"other\": {\"type\": \"unknown\", \"content\": {\"description\": {\"description_data\": [{\"lang\": \"eng\", \"value\": \"Unprivileged guests can cause a DoS of xenstored, resulting in the\\ninability to create new guests or modify the configuration of running\\nguests.\"}]}}}}], \"problemTypes\": [{\"descriptions\": [{\"type\": \"text\", \"lang\": \"en\", \"description\": \"unknown\"}]}]}, \"adp\": [{\"providerMetadata\": {\"orgId\": \"af854a3a-2127-422b-91ae-364da2661108\", \"shortName\": \"CVE\", \"dateUpdated\": \"2024-08-03T13:03:45.914Z\"}, \"title\": \"CVE Program Container\", \"references\": [{\"url\": \"https://xenbits.xenproject.org/xsa/advisory-326.txt\", \"tags\": [\"x_transferred\"]}, {\"url\": \"http://xenbits.xen.org/xsa/advisory-326.html\", \"tags\": [\"x_transferred\"]}, {\"name\": \"DSA-5272\", \"tags\": [\"vendor-advisory\", \"x_transferred\"], \"url\": \"https://www.debian.org/security/2022/dsa-5272\"}, {\"name\": \"FEDORA-2022-07438e12df\", \"tags\": [\"vendor-advisory\", \"x_transferred\"], \"url\": \"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZLI2NPNEH7CNJO3VZGQNOI4M4EWLNKPZ/\"}, {\"name\": \"FEDORA-2022-99af00f60e\", \"tags\": [\"vendor-advisory\", \"x_transferred\"], \"url\": \"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/YZVXG7OOOXCX6VIPEMLFDPIPUTFAYWPE/\"}, {\"name\": \"FEDORA-2022-9f51d13fa3\", \"tags\": [\"vendor-advisory\", \"x_transferred\"], \"url\": \"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/YTMITQBGC23MSDHUCAPCVGLMVXIBXQTQ/\"}]}, {\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"cvssV3_1\": {\"scope\": \"CHANGED\", \"version\": \"3.1\", \"baseScore\": 6.5, \"attackVector\": \"LOCAL\", \"baseSeverity\": \"MEDIUM\", \"vectorString\": \"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H\", \"integrityImpact\": \"NONE\", \"userInteraction\": \"NONE\", \"attackComplexity\": \"LOW\", \"availabilityImpact\": \"HIGH\", \"privilegesRequired\": \"LOW\", \"confidentialityImpact\": \"NONE\"}}, {\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2022-42318\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"partial\"}], \"version\": \"2.0.3\", \"timestamp\": \"2025-05-05T16:37:57.931133Z\"}}}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"type\": \"CWE\", \"cweId\": \"CWE-770\", \"description\": \"CWE-770 Allocation of Resources Without Limits or Throttling\"}]}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2025-05-05T16:38:28.096Z\"}}]}",
"cveMetadata": "{\"state\": \"PUBLISHED\", \"cveId\": \"CVE-2022-42318\", \"assignerOrgId\": \"23aa2041-22e1-471f-9209-9b7396fa234f\", \"assignerShortName\": \"XEN\", \"dateUpdated\": \"2025-05-05T16:38:32.706Z\", \"dateReserved\": \"2022-10-03T00:00:00.000Z\", \"datePublished\": \"2022-11-01T00:00:00.000Z\"}",
"dataType": "CVE_RECORD",
"dataVersion": "5.1"
}
}
}
Loading…
Loading…
Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
Loading…
Loading…