CVE-2020-8437 - Vulnerability Details - OpenCVE

The bencoding parser in BitTorrent uTorrent through 3.5.5 (build 45505) misparses nested bencoded dictionaries, which allows a remote attacker to cause a denial of service.

No CVSS v4.0

Attack Vector Network

Attack Complexity Low

Privileges Required None

Scope Unchanged

Confidentiality Impact None

Integrity Impact None

Availability Impact High

User Interaction None

No CVSS v3.0

Access Vector Network

Access Complexity Low

Authentication None

Confidentiality Impact None

Integrity Impact None

Availability Impact Partial

This CVE is not in the KEV list.

Key SSVC decision points have not yet been added.

Vendors	Products
Bittorrent	Utorrent

Configuration 1 [-]

cpe:2.3:a:bittorrent:utorrent:*:*:*:*:*:*:*:*

No data.

References

Link	Providers
https://blog.whtaguy.com/2020/09/utorrent-cve-2020-8437-vulnerability.html
https://forum.utorrent.com/forum/13-announcements/
https://twitter.com/va_start
https://utclient.utorrent.com/offers/beta_release_notes/release_notes.html

History

No history.

MITRE

Status: PUBLISHED

Assigner: mitre

Published: 2020-03-02T18:33:37

Updated: 2024-08-04T09:56:28.360Z

Reserved: 2020-01-29T00:00:00

Link: CVE-2020-8437

Vulnrichment

No data.

NVD

Status : Modified

Published: 2020-03-02T19:15:12.757

Modified: 2024-11-21T05:38:51.123

Link: CVE-2020-8437

Redhat

No data.

{"containers": {"cna": {"affected": [{"product": "n/a", "vendor": "n/a", "versions": [{"status": "affected", "version": "n/a"}]}], "descriptions": [{"lang": "en", "value": "The bencoding parser in BitTorrent uTorrent through 3.5.5 (build 45505) misparses nested bencoded dictionaries, which allows a remote attacker to cause a denial of service."}], "problemTypes": [{"descriptions": [{"description": "n/a", "lang": "en", "type": "text"}]}], "providerMetadata": {"dateUpdated": "2020-09-29T13:33:49", "orgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca", "shortName": "mitre"}, "references": [{"tags": ["x_refsource_MISC"], "url": "https://forum.utorrent.com/forum/13-announcements/"}, {"tags": ["x_refsource_MISC"], "url": "https://twitter.com/va_start"}, {"tags": ["x_refsource_CONFIRM"], "url": "https://utclient.utorrent.com/offers/beta_release_notes/release_notes.html"}, {"tags": ["x_refsource_MISC"], "url": "https://blog.whtaguy.com/2020/09/utorrent-cve-2020-8437-vulnerability.html"}], "x_legacyV4Record": {"CVE_data_meta": {"ASSIGNER": "cve@mitre.org", "ID": "CVE-2020-8437", "STATE": "PUBLIC"}, "affects": {"vendor": {"vendor_data": [{"product": {"product_data": [{"product_name": "n/a", "version": {"version_data": [{"version_value": "n/a"}]}}]}, "vendor_name": "n/a"}]}}, "data_format": "MITRE", "data_type": "CVE", "data_version": "4.0", "description": {"description_data": [{"lang": "eng", "value": "The bencoding parser in BitTorrent uTorrent through 3.5.5 (build 45505) misparses nested bencoded dictionaries, which allows a remote attacker to cause a denial of service."}]}, "problemtype": {"problemtype_data": [{"description": [{"lang": "eng", "value": "n/a"}]}]}, "references": {"reference_data": [{"name": "https://forum.utorrent.com/forum/13-announcements/", "refsource": "MISC", "url": "https://forum.utorrent.com/forum/13-announcements/"}, {"name": "https://twitter.com/va_start", "refsource": "MISC", "url": "https://twitter.com/va_start"}, {"name": "https://utclient.utorrent.com/offers/beta_release_notes/release_notes.html", "refsource": "CONFIRM", "url": "https://utclient.utorrent.com/offers/beta_release_notes/release_notes.html"}, {"name": "https://blog.whtaguy.com/2020/09/utorrent-cve-2020-8437-vulnerability.html", "refsource": "MISC", "url": "https://blog.whtaguy.com/2020/09/utorrent-cve-2020-8437-vulnerability.html"}]}}}, "adp": [{"providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-04T09:56:28.360Z"}, "title": "CVE Program Container", "references": [{"tags": ["x_refsource_MISC", "x_transferred"], "url": "https://forum.utorrent.com/forum/13-announcements/"}, {"tags": ["x_refsource_MISC", "x_transferred"], "url": "https://twitter.com/va_start"}, {"tags": ["x_refsource_CONFIRM", "x_transferred"], "url": "https://utclient.utorrent.com/offers/beta_release_notes/release_notes.html"}, {"tags": ["x_refsource_MISC", "x_transferred"], "url": "https://blog.whtaguy.com/2020/09/utorrent-cve-2020-8437-vulnerability.html"}]}]}, "cveMetadata": {"assignerOrgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca", "assignerShortName": "mitre", "cveId": "CVE-2020-8437", "datePublished": "2020-03-02T18:33:37", "dateReserved": "2020-01-29T00:00:00", "dateUpdated": "2024-08-04T09:56:28.360Z", "state": "PUBLISHED"}, "dataType": "CVE_RECORD", "dataVersion": "5.1"}

{"configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:bittorrent:utorrent:*:*:*:*:*:*:*:*", "matchCriteriaId": "C7FB44E3-1CD5-4A64-9818-B287F6CE9C60", "versionEndIncluding": "3.5.5", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "descriptions": [{"lang": "en", "value": "The bencoding parser in BitTorrent uTorrent through 3.5.5 (build 45505) misparses nested bencoded dictionaries, which allows a remote attacker to cause a denial of service."}, {"lang": "es", "value": "El analizador de bencoding en BitTorrent uTorrent versiones hasta 3.5.5 (build 45505) analiza inapropiadamente los diccionarios bencoded anidados lo que permite a un atacante remoto causar una denegaci\u00f3n de servicio."}], "id": "CVE-2020-8437", "lastModified": "2024-11-21T05:38:51.123", "metrics": {"cvssMetricV2": [{"acInsufInfo": false, "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}], "cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 7.5, "baseSeverity": "HIGH", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 3.6, "source": "nvd@nist.gov", "type": "Primary"}]}, "published": "2020-03-02T19:15:12.757", "references": [{"source": "cve@mitre.org", "tags": ["Exploit", "Third Party Advisory"], "url": "https://blog.whtaguy.com/2020/09/utorrent-cve-2020-8437-vulnerability.html"}, {"source": "cve@mitre.org", "tags": ["Vendor Advisory"], "url": "https://forum.utorrent.com/forum/13-announcements/"}, {"source": "cve@mitre.org", "tags": ["Third Party Advisory"], "url": "https://twitter.com/va_start"}, {"source": "cve@mitre.org", "tags": ["Release Notes", "Vendor Advisory"], "url": "https://utclient.utorrent.com/offers/beta_release_notes/release_notes.html"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Exploit", "Third Party Advisory"], "url": "https://blog.whtaguy.com/2020/09/utorrent-cve-2020-8437-vulnerability.html"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Vendor Advisory"], "url": "https://forum.utorrent.com/forum/13-announcements/"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Third Party Advisory"], "url": "https://twitter.com/va_start"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Release Notes", "Vendor Advisory"], "url": "https://utclient.utorrent.com/offers/beta_release_notes/release_notes.html"}], "sourceIdentifier": "cve@mitre.org", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-476"}], "source": "nvd@nist.gov", "type": "Primary"}]}