CVE-2021-28089

Tor before 0.4.5.7 allows a remote participant in the Tor directory protocol to exhaust CPU resources on a target, aka TROVE-2021-001.

CVSS v3 7.5 HIGH
CVSS v2.0 5.0 MEDIUM

7.5^/10

CVSS v3 : HIGH

Vector :

Exploitability : 3.9 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

5.0^/10

CVSS v2.0 : MEDIUM

Vector : AV:N/AC:L/Au:N/C:N/I:N/A:P

Exploitability : 10.0 / Impact : 2.9

Access Vector NETWORK

Access Complexity LOW

Authentication NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact PARTIAL

References

Link	Resource
https://blog.torproject.org/node/2009	Release Notes Vendor Advisory
https://gitlab.torproject.org/tpo/core/tor/-/issues/40304	Vendor Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/HPDXB2GZHG3VNOTWSXQ3QZVHNV76WCU5/
https://security.gentoo.org/glsa/202107-25	Third Party Advisory

Configurations

Configuration 1 (hide)

OR	cpe:2.3:a:torproject:tor::::::::
	cpe:2.3:a:torproject:tor::::::::
	cpe:2.3:a:torproject:tor::::::::
	cpe:2.3:a:torproject:tor:0.4.4.0:alpha::::::
	cpe:2.3:a:torproject:tor:0.4.4.1:alpha::::::
	cpe:2.3:a:torproject:tor:0.4.4.2:alpha::::::
	cpe:2.3:a:torproject:tor:0.4.4.3:alpha::::::

Configuration 2 (hide)

cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:*

History

No history.

Information

Published : 2021-03-19 05:15

Updated : 2023-11-07 03:32

NVD link : CVE-2021-28089

Mitre link : CVE-2021-28089

CVE.ORG link : CVE-2021-28089

JSON object : View

Products Affected

fedoraproject

fedora

torproject

tor

CWE

CWE-400

Uncontrolled Resource Consumption

{"id": "CVE-2021-28089", "cveTags": [], "metrics": {"cvssMetricV2": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"version": "2.0", "baseScore": 5.0, "accessVector": "NETWORK", "vectorString": "AV:N/AC:L/Au:N/C:N/I:N/A:P", "authentication": "NONE", "integrityImpact": "NONE", "accessComplexity": "LOW", "availabilityImpact": "PARTIAL", "confidentialityImpact": "NONE"}, "acInsufInfo": false, "impactScore": 2.9, "baseSeverity": "MEDIUM", "obtainAllPrivilege": false, "exploitabilityScore": 10.0, "obtainUserPrivilege": false, "obtainOtherPrivilege": false, "userInteractionRequired": false}], "cvssMetricV31": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 7.5, "attackVector": "NETWORK", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "NONE", "confidentialityImpact": "NONE"}, "impactScore": 3.6, "exploitabilityScore": 3.9}]}, "published": "2021-03-19T05:15:12.807", "references": [{"url": "https://blog.torproject.org/node/2009", "tags": ["Release Notes", "Vendor Advisory"], "source": "cve@mitre.org"}, {"url": "https://gitlab.torproject.org/tpo/core/tor/-/issues/40304", "tags": ["Vendor Advisory"], "source": "cve@mitre.org"}, {"url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/HPDXB2GZHG3VNOTWSXQ3QZVHNV76WCU5/", "source": "cve@mitre.org"}, {"url": "https://security.gentoo.org/glsa/202107-25", "tags": ["Third Party Advisory"], "source": "cve@mitre.org"}], "vulnStatus": "Modified", "weaknesses": [{"type": "Primary", "source": "nvd@nist.gov", "description": [{"lang": "en", "value": "CWE-400"}]}], "descriptions": [{"lang": "en", "value": "Tor before 0.4.5.7 allows a remote participant in the Tor directory protocol to exhaust CPU resources on a target, aka TROVE-2021-001."}, {"lang": "es", "value": "Tor versiones anteriores a 0.4.5.7, permite a un participante remoto en el protocolo de directorio de Tor agotar los recursos de la CPU en un objetivo, tambi\u00e9n se conoce como TROVE-2021-001"}], "lastModified": "2023-11-07T03:32:03.620", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:torproject:tor:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "43571CF8-3E89-4207-85A4-809927C4E8B1", "versionEndExcluding": "0.3.5.14"}, {"criteria": "cpe:2.3:a:torproject:tor:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "172491E9-1095-4908-8D59-F65C7639FDAF", "versionEndExcluding": "0.4.4.8", "versionStartIncluding": "0.4.4.4"}, {"criteria": "cpe:2.3:a:torproject:tor:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "A7449C9D-05ED-49E4-A3D9-674B44E032F9", "versionEndExcluding": "0.4.5.7", "versionStartIncluding": "0.4.5.0"}, {"criteria": "cpe:2.3:a:torproject:tor:0.4.4.0:alpha:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "C3708B4D-8F02-47B4-81E8-AA626B04C906"}, {"criteria": "cpe:2.3:a:torproject:tor:0.4.4.1:alpha:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "2143F2C0-BBD4-4B14-84D6-70125DD37376"}, {"criteria": "cpe:2.3:a:torproject:tor:0.4.4.2:alpha:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "85811EFA-8639-439D-BC97-52C70D5937E1"}, {"criteria": "cpe:2.3:a:torproject:tor:0.4.4.3:alpha:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "419573B8-18FB-4BEA-8C21-023BA05B3D8E"}], "operator": "OR"}]}, {"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "E460AA51-FCDA-46B9-AE97-E6676AA5E194"}], "operator": "OR"}]}], "sourceIdentifier": "cve@mitre.org"}