cve-2024-12254
Vulnerability from cvelistv5
Published
2024-12-06 15:19
Modified
2024-12-06 19:02
Severity ?
EPSS score ?
Summary
Unbounded memory buffering in SelectorSocketTransport.writelines()
References
Impacted products
Vendor | Product | Version | |
---|---|---|---|
▼ | Python Software Foundation | CPython |
Version: 3.12.0 |
|
{ "containers": { "adp": [ { "affected": [ { "cpes": [ "cpe:2.3:a:python_software_foundation:cpython:*:*:*:*:*:*:*:*" ], "defaultStatus": "unknown", "product": "cpython", "vendor": "python_software_foundation", "versions": [ { "lessThan": "3.14.0a1", "status": "affected", "version": "3.12.0", "versionType": "python" } ] } ], "metrics": [ { "other": { "content": { "id": "CVE-2024-12254", "options": [ { "Exploitation": "none" }, { "Automatable": "yes" }, { "Technical Impact": "partial" } ], "role": "CISA Coordinator", "timestamp": "2024-12-06T15:35:11.234951Z", "version": "2.0.3" }, "type": "ssvc" } } ], "providerMetadata": { "dateUpdated": "2024-12-06T15:37:30.412Z", "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP" }, "title": "CISA ADP Vulnrichment" }, { "providerMetadata": { "dateUpdated": "2024-12-06T19:02:35.550Z", "orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE" }, "references": [ { "url": "http://www.openwall.com/lists/oss-security/2024/12/06/1" } ], "title": "CVE Program Container" } ], "cna": { "affected": [ { "defaultStatus": "unaffected", "modules": [ "asyncio" ], "platforms": [ "MacOS", "Linux" ], "product": "CPython", "repo": "https://github.com/python/cpython", "vendor": "Python Software Foundation", "versions": [ { "lessThan": "3.14.0a2", "status": "affected", "version": "3.12.0", "versionType": "python" } ] } ], "credits": [ { "lang": "en", "type": "reporter", "value": "J. Nick Koston" }, { "lang": "en", "type": "coordinator", "value": "Seth Larson" } ], "descriptions": [ { "lang": "en", "supportingMedia": [ { "base64": false, "type": "text/html", "value": "\u003cdiv\u003eStarting in Python 3.12.0, the asyncio._SelectorSocketTransport.writelines()\n method would not \"pause\" writing and signal to the Protocol to drain \nthe buffer to the wire once the write buffer reached the \"high-water \nmark\". Because of this, Protocols would not periodically drain the write\n buffer potentially leading to memory exhaustion.\u003cbr\u003e\u003c/div\u003e\u003cdiv\u003e\u003cbr\u003e\u003c/div\u003e\u003cdiv\u003eThis\n vulnerability likely impacts a small number of users, you must be using\n Python 3.12.0 or later, on macOS or Linux, using the asyncio module \nwith protocols, and using .writelines() method which had new \nzero-copy-on-write behavior in Python 3.12.0 and later. If not all of \nthese factors are true then your usage of Python is unaffected.\u003c/div\u003e\u003cbr\u003e" } ], "value": "Starting in Python 3.12.0, the asyncio._SelectorSocketTransport.writelines()\n method would not \"pause\" writing and signal to the Protocol to drain \nthe buffer to the wire once the write buffer reached the \"high-water \nmark\". Because of this, Protocols would not periodically drain the write\n buffer potentially leading to memory exhaustion.\n\n\n\n\n\nThis\n vulnerability likely impacts a small number of users, you must be using\n Python 3.12.0 or later, on macOS or Linux, using the asyncio module \nwith protocols, and using .writelines() method which had new \nzero-copy-on-write behavior in Python 3.12.0 and later. If not all of \nthese factors are true then your usage of Python is unaffected." } ], "metrics": [ { "cvssV4_0": { "Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "Safety": "NOT_DEFINED", "attackComplexity": "LOW", "attackRequirements": "NONE", "attackVector": "NETWORK", "baseScore": 8.7, "baseSeverity": "HIGH", "privilegesRequired": "NONE", "providerUrgency": "NOT_DEFINED", "subAvailabilityImpact": "NONE", "subConfidentialityImpact": "NONE", "subIntegrityImpact": "NONE", "userInteraction": "NONE", "valueDensity": "NOT_DEFINED", "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N", "version": "4.0", "vulnAvailabilityImpact": "HIGH", "vulnConfidentialityImpact": "NONE", "vulnIntegrityImpact": "NONE", "vulnerabilityResponseEffort": "NOT_DEFINED" }, "format": "CVSS", "scenarios": [ { "lang": "en", "value": "GENERAL" } ] } ], "problemTypes": [ { "descriptions": [ { "cweId": "CWE-400", "description": "CWE-400 Uncontrolled Resource Consumption", "lang": "en", "type": "CWE" } ] }, { "descriptions": [ { "cweId": "CWE-770", "description": "CWE-770 Allocation of Resources Without Limits or Throttling", "lang": "en", "type": "CWE" } ] } ], "providerMetadata": { "dateUpdated": "2024-12-06T16:06:59.276Z", "orgId": "28c92f92-d60d-412d-b760-e73465c3df22", "shortName": "PSF" }, "references": [ { "tags": [ "issue-tracking" ], "url": "https://github.com/python/cpython/issues/127655" }, { "tags": [ "patch" ], "url": "https://github.com/python/cpython/pull/127656" }, { "tags": [ "vendor-advisory" ], "url": "https://mail.python.org/archives/list/security-announce@python.org/thread/H4O3UBAOAQQXGT4RE3E4XQYR5XLROORB/" }, { "tags": [ "patch" ], "url": "https://github.com/python/cpython/commit/71e8429ac8e2adc10084ab5ec29a62f4b6671a82" }, { "tags": [ "patch" ], "url": "https://github.com/python/cpython/commit/9aa0deb2eef2655a1029ba228527b152353135b5" } ], "source": { "discovery": "UNKNOWN" }, "title": "Unbounded memory buffering in SelectorSocketTransport.writelines()", "x_generator": { "engine": "Vulnogram 0.2.0" } } }, "cveMetadata": { "assignerOrgId": "28c92f92-d60d-412d-b760-e73465c3df22", "assignerShortName": "PSF", "cveId": "CVE-2024-12254", "datePublished": "2024-12-06T15:19:41.576Z", "dateReserved": "2024-12-05T16:17:55.154Z", "dateUpdated": "2024-12-06T19:02:35.550Z", "state": "PUBLISHED" }, "dataType": "CVE_RECORD", "dataVersion": "5.1", "meta": { "nvd": "{\"cve\":{\"id\":\"CVE-2024-12254\",\"sourceIdentifier\":\"cna@python.org\",\"published\":\"2024-12-06T16:15:20.623\",\"lastModified\":\"2024-12-06T19:15:10.983\",\"vulnStatus\":\"Received\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"Starting in Python 3.12.0, the asyncio._SelectorSocketTransport.writelines()\\n method would not \\\"pause\\\" writing and signal to the Protocol to drain \\nthe buffer to the wire once the write buffer reached the \\\"high-water \\nmark\\\". Because of this, Protocols would not periodically drain the write\\n buffer potentially leading to memory exhaustion.\\n\\n\\n\\n\\n\\nThis\\n vulnerability likely impacts a small number of users, you must be using\\n Python 3.12.0 or later, on macOS or Linux, using the asyncio module \\nwith protocols, and using .writelines() method which had new \\nzero-copy-on-write behavior in Python 3.12.0 and later. If not all of \\nthese factors are true then your usage of Python is unaffected.\"}],\"metrics\":{\"cvssMetricV40\":[{\"source\":\"cna@python.org\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"4.0\",\"vectorString\":\"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X\",\"baseScore\":8.7,\"baseSeverity\":\"HIGH\",\"attackVector\":\"NETWORK\",\"attackComplexity\":\"LOW\",\"attackRequirements\":\"NONE\",\"privilegesRequired\":\"NONE\",\"userInteraction\":\"NONE\",\"vulnerableSystemConfidentiality\":\"NONE\",\"vulnerableSystemIntegrity\":\"NONE\",\"vulnerableSystemAvailability\":\"HIGH\",\"subsequentSystemConfidentiality\":\"NONE\",\"subsequentSystemIntegrity\":\"NONE\",\"subsequentSystemAvailability\":\"NONE\",\"exploitMaturity\":\"NOT_DEFINED\",\"confidentialityRequirements\":\"NOT_DEFINED\",\"integrityRequirements\":\"NOT_DEFINED\",\"availabilityRequirements\":\"NOT_DEFINED\",\"modifiedAttackVector\":\"NOT_DEFINED\",\"modifiedAttackComplexity\":\"NOT_DEFINED\",\"modifiedAttackRequirements\":\"NOT_DEFINED\",\"modifiedPrivilegesRequired\":\"NOT_DEFINED\",\"modifiedUserInteraction\":\"NOT_DEFINED\",\"modifiedVulnerableSystemConfidentiality\":\"NOT_DEFINED\",\"modifiedVulnerableSystemIntegrity\":\"NOT_DEFINED\",\"modifiedVulnerableSystemAvailability\":\"NOT_DEFINED\",\"modifiedSubsequentSystemConfidentiality\":\"NOT_DEFINED\",\"modifiedSubsequentSystemIntegrity\":\"NOT_DEFINED\",\"modifiedSubsequentSystemAvailability\":\"NOT_DEFINED\",\"safety\":\"NOT_DEFINED\",\"automatable\":\"NOT_DEFINED\",\"recovery\":\"NOT_DEFINED\",\"valueDensity\":\"NOT_DEFINED\",\"vulnerabilityResponseEffort\":\"NOT_DEFINED\",\"providerUrgency\":\"NOT_DEFINED\"}}]},\"weaknesses\":[{\"source\":\"cna@python.org\",\"type\":\"Secondary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-400\"},{\"lang\":\"en\",\"value\":\"CWE-770\"}]}],\"references\":[{\"url\":\"https://github.com/python/cpython/commit/71e8429ac8e2adc10084ab5ec29a62f4b6671a82\",\"source\":\"cna@python.org\"},{\"url\":\"https://github.com/python/cpython/commit/9aa0deb2eef2655a1029ba228527b152353135b5\",\"source\":\"cna@python.org\"},{\"url\":\"https://github.com/python/cpython/issues/127655\",\"source\":\"cna@python.org\"},{\"url\":\"https://github.com/python/cpython/pull/127656\",\"source\":\"cna@python.org\"},{\"url\":\"https://mail.python.org/archives/list/security-announce@python.org/thread/H4O3UBAOAQQXGT4RE3E4XQYR5XLROORB/\",\"source\":\"cna@python.org\"},{\"url\":\"http://www.openwall.com/lists/oss-security/2024/12/06/1\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"}]}}" } }
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Sightings
Author | Source | Type | Date |
---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.