fkie_cve-2020-8516
Vulnerability from fkie_nvd
Published
2020-02-02 13:15
Modified
2024-11-21 05:38
Severity ?
Summary
The daemon in Tor through 0.4.1.8 and 0.4.2.x through 0.4.2.6 does not verify that a rendezvous node is known before attempting to connect to it, which might make it easier for remote attackers to discover circuit information. NOTE: The network team of Tor claims this is an intended behavior and not a vulnerability
References
Impacted products
| Vendor | Product | Version | |
|---|---|---|---|
| torproject | tor | * | |
| torproject | tor | * |
{
"configurations": [
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:a:torproject:tor:*:*:*:*:*:*:*:*",
"matchCriteriaId": "A433651E-DAE8-44B3-AB2F-069776068357",
"versionEndIncluding": "0.4.1.8",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:torproject:tor:*:*:*:*:*:*:*:*",
"matchCriteriaId": "2DE290F9-C6B7-4D2C-B7E5-CAB1E9D3A7E6",
"versionEndIncluding": "0.4.2.6",
"versionStartIncluding": "0.4.2.0",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
]
}
],
"cveTags": [
{
"sourceIdentifier": "cve@mitre.org",
"tags": [
"disputed"
]
}
],
"descriptions": [
{
"lang": "en",
"value": "The daemon in Tor through 0.4.1.8 and 0.4.2.x through 0.4.2.6 does not verify that a rendezvous node is known before attempting to connect to it, which might make it easier for remote attackers to discover circuit information. NOTE: The network team of Tor claims this is an intended behavior and not a vulnerability"
},
{
"lang": "es",
"value": "** EN DISPUTA ** El demonio en Tor hasta la versi\u00f3n 0.4.1.8 y versiones 0.4.2.x hasta la versi\u00f3n 0.4.2.6, no comprueba que un nodo rendezvous sea conocido antes de intentar conectarse a \u00e9l, lo que podr\u00eda facilitar a atacantes remotos descubrir informaci\u00f3n del circuito. NOTA: El equipo de red de Tor afirma que este es un comportamiento previsto y no una vulnerabilidad."
}
],
"id": "CVE-2020-8516",
"lastModified": "2024-11-21T05:38:58.863",
"metrics": {
"cvssMetricV2": [
{
"acInsufInfo": false,
"baseSeverity": "MEDIUM",
"cvssData": {
"accessComplexity": "LOW",
"accessVector": "NETWORK",
"authentication": "NONE",
"availabilityImpact": "NONE",
"baseScore": 5.0,
"confidentialityImpact": "PARTIAL",
"integrityImpact": "NONE",
"vectorString": "AV:N/AC:L/Au:N/C:P/I:N/A:N",
"version": "2.0"
},
"exploitabilityScore": 10.0,
"impactScore": 2.9,
"obtainAllPrivilege": false,
"obtainOtherPrivilege": false,
"obtainUserPrivilege": false,
"source": "nvd@nist.gov",
"type": "Primary",
"userInteractionRequired": false
}
],
"cvssMetricV31": [
{
"cvssData": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "NONE",
"baseScore": 5.3,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "LOW",
"integrityImpact": "NONE",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N",
"version": "3.1"
},
"exploitabilityScore": 3.9,
"impactScore": 1.4,
"source": "nvd@nist.gov",
"type": "Primary"
}
]
},
"published": "2020-02-02T13:15:10.903",
"references": [
{
"source": "cve@mitre.org",
"tags": [
"Mailing List",
"Vendor Advisory"
],
"url": "https://lists.torproject.org/pipermail/tor-dev/2020-February/014146.html"
},
{
"source": "cve@mitre.org",
"tags": [
"Mailing List",
"Vendor Advisory"
],
"url": "https://lists.torproject.org/pipermail/tor-dev/2020-February/014147.html"
},
{
"source": "cve@mitre.org",
"tags": [
"Third Party Advisory"
],
"url": "https://security-tracker.debian.org/tracker/CVE-2020-8516"
},
{
"source": "cve@mitre.org",
"tags": [
"Issue Tracking",
"Vendor Advisory"
],
"url": "https://trac.torproject.org/projects/tor/ticket/33129"
},
{
"source": "cve@mitre.org",
"tags": [
"Exploit",
"Mitigation",
"Technical Description",
"Third Party Advisory"
],
"url": "https://www.hackerfactor.com/blog/index.php?/archives/868-Deanonymizing-Tor-Circuits.html"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Mailing List",
"Vendor Advisory"
],
"url": "https://lists.torproject.org/pipermail/tor-dev/2020-February/014146.html"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Mailing List",
"Vendor Advisory"
],
"url": "https://lists.torproject.org/pipermail/tor-dev/2020-February/014147.html"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Third Party Advisory"
],
"url": "https://security-tracker.debian.org/tracker/CVE-2020-8516"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Issue Tracking",
"Vendor Advisory"
],
"url": "https://trac.torproject.org/projects/tor/ticket/33129"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Exploit",
"Mitigation",
"Technical Description",
"Third Party Advisory"
],
"url": "https://www.hackerfactor.com/blog/index.php?/archives/868-Deanonymizing-Tor-Circuits.html"
}
],
"sourceIdentifier": "cve@mitre.org",
"vulnStatus": "Modified",
"weaknesses": [
{
"description": [
{
"lang": "en",
"value": "NVD-CWE-noinfo"
}
],
"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.
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- 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.