fkie_cve-2016-6580
Vulnerability from fkie_nvd
Published
2017-01-10 15:59
Modified
2025-04-20 01:37
Severity ?
Summary
A HTTP/2 implementation built using any version of the Python priority library prior to version 1.2.0 could be targeted by a malicious peer by having that peer assign priority information for every possible HTTP/2 stream ID. The priority tree would happily continue to store the priority information for each stream, and would therefore allocate unbounded amounts of memory. Attempting to actually use a tree like this would also cause extremely high CPU usage to maintain the tree.
References
| URL | Tags | ||
|---|---|---|---|
| cve@mitre.org | http://www.securityfocus.com/bid/92311 | Third Party Advisory, VDB Entry | |
| cve@mitre.org | https://python-hyper.org/priority/en/latest/security/CVE-2016-6580.html | Mitigation, Vendor Advisory | |
| af854a3a-2127-422b-91ae-364da2661108 | http://www.securityfocus.com/bid/92311 | Third Party Advisory, VDB Entry | |
| af854a3a-2127-422b-91ae-364da2661108 | https://python-hyper.org/priority/en/latest/security/CVE-2016-6580.html | Mitigation, Vendor Advisory |
Impacted products
| Vendor | Product | Version | |
|---|---|---|---|
| python | python_priority_library | 1.0.0 | |
| python | python_priority_library | 1.1.0 | |
| python | python_priority_library | 1.1.1 |
{
"configurations": [
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:a:python:python_priority_library:1.0.0:*:*:*:*:*:*:*",
"matchCriteriaId": "1AD8F1D6-AFC5-4BAF-9E2E-58286ED8FA02",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:python:python_priority_library:1.1.0:*:*:*:*:*:*:*",
"matchCriteriaId": "C116405C-CC49-4664-AAD7-15E3549FA8BE",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:python:python_priority_library:1.1.1:*:*:*:*:*:*:*",
"matchCriteriaId": "6FB0D31F-B71D-4AD9-8D7B-1533018BF2B3",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
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}
],
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "A HTTP/2 implementation built using any version of the Python priority library prior to version 1.2.0 could be targeted by a malicious peer by having that peer assign priority information for every possible HTTP/2 stream ID. The priority tree would happily continue to store the priority information for each stream, and would therefore allocate unbounded amounts of memory. Attempting to actually use a tree like this would also cause extremely high CPU usage to maintain the tree."
},
{
"lang": "es",
"value": "Una implementaci\u00f3n HTTP/2 construida usando cualquier versi\u00f3n de la librer\u00eda de prioridad de Python anterior a la versi\u00f3n 1.2.0 podr\u00eda ser atacado por un par malicioso teniendo ese par informaci\u00f3n de prioridad de asignaci\u00f3n para cada posible ID de secuencia HTTP/2. El \u00e1rbol de prioridad continuar\u00eda felizmente almacenando la informaci\u00f3n de prioridad para cada secuencia, y por tanto asignar\u00eda cantidades ilimitadas de memoria. Tratar de utilizar realmente un \u00e1rbol como este provocar\u00eda tambi\u00e9n un uso extremadamente alto de la CPU para mantener el \u00e1rbol."
}
],
"id": "CVE-2016-6580",
"lastModified": "2025-04-20T01:37:25.860",
"metrics": {
"cvssMetricV2": [
{
"acInsufInfo": true,
"baseSeverity": "MEDIUM",
"cvssData": {
"accessComplexity": "LOW",
"accessVector": "NETWORK",
"authentication": "NONE",
"availabilityImpact": "PARTIAL",
"baseScore": 5.0,
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"vectorString": "AV:N/AC:L/Au:N/C:N/I:N/A:P",
"version": "2.0"
},
"exploitabilityScore": 10.0,
"impactScore": 2.9,
"obtainAllPrivilege": false,
"obtainOtherPrivilege": false,
"obtainUserPrivilege": false,
"source": "nvd@nist.gov",
"type": "Primary",
"userInteractionRequired": false
}
],
"cvssMetricV30": [
{
"cvssData": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 7.5,
"baseSeverity": "HIGH",
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
"version": "3.0"
},
"exploitabilityScore": 3.9,
"impactScore": 3.6,
"source": "nvd@nist.gov",
"type": "Primary"
}
]
},
"published": "2017-01-10T15:59:00.377",
"references": [
{
"source": "cve@mitre.org",
"tags": [
"Third Party Advisory",
"VDB Entry"
],
"url": "http://www.securityfocus.com/bid/92311"
},
{
"source": "cve@mitre.org",
"tags": [
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"url": "https://python-hyper.org/priority/en/latest/security/CVE-2016-6580.html"
},
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],
"url": "https://python-hyper.org/priority/en/latest/security/CVE-2016-6580.html"
}
],
"sourceIdentifier": "cve@mitre.org",
"vulnStatus": "Deferred",
"weaknesses": [
{
"description": [
{
"lang": "en",
"value": "CWE-399"
}
],
"source": "nvd@nist.gov",
"type": "Primary"
}
]
}
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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.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- 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.
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