CVE-2020-15572

Tor before 0.4.3.6 has an out-of-bounds memory access that allows a remote denial-of-service (crash) attack against Tor instances built to use Mozilla Network Security Services (NSS), aka TROVE-2020-001.

CVSS v3.0 7.5 HIGH
CVSS v2.0 4.3 MEDIUM

7.5^/10

CVSS v3.0 : 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

4.3^/10

CVSS v2.0 : MEDIUM

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

Exploitability : 8.6 / Impact : 2.9

Access Vector NETWORK

Access Complexity MEDIUM

Authentication NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact PARTIAL

References

Link	Resource
https://gitlab.torproject.org/tpo/core/tor/-/issues/33119	Vendor Advisory
https://trac.torproject.org/projects/tor/wiki/TROVE	Vendor Advisory
https://blog.torproject.org/new-release-tor-03511-0428-0436-security-fixes	Release Notes Vendor Advisory

Advertisement

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::::::

Information

Published : 2020-07-15 10:15

Updated : 2021-07-21 04:39

NVD link : CVE-2020-15572

Mitre link : CVE-2020-15572

JSON object : View

CWE

CWE-125

Out-of-bounds Read

Advertisement

Products Affected

torproject

tor

{"cve": {"data_type": "CVE", "references": {"reference_data": [{"url": "https://gitlab.torproject.org/tpo/core/tor/-/issues/33119", "name": "https://gitlab.torproject.org/tpo/core/tor/-/issues/33119", "tags": ["Vendor Advisory"], "refsource": "MISC"}, {"url": "https://trac.torproject.org/projects/tor/wiki/TROVE", "name": "https://trac.torproject.org/projects/tor/wiki/TROVE", "tags": ["Vendor Advisory"], "refsource": "MISC"}, {"url": "https://blog.torproject.org/new-release-tor-03511-0428-0436-security-fixes", "name": "https://blog.torproject.org/new-release-tor-03511-0428-0436-security-fixes", "tags": ["Release Notes", "Vendor Advisory"], "refsource": "CONFIRM"}]}, "data_format": "MITRE", "description": {"description_data": [{"lang": "en", "value": "Tor before 0.4.3.6 has an out-of-bounds memory access that allows a remote denial-of-service (crash) attack against Tor instances built to use Mozilla Network Security Services (NSS), aka TROVE-2020-001."}]}, "problemtype": {"problemtype_data": [{"description": [{"lang": "en", "value": "CWE-125"}]}]}, "data_version": "4.0", "CVE_data_meta": {"ID": "CVE-2020-15572", "ASSIGNER": "cve@mitre.org"}}, "impact": {"baseMetricV2": {"cvssV2": {"version": "2.0", "baseScore": 4.3, "accessVector": "NETWORK", "vectorString": "AV:N/AC:M/Au:N/C:N/I:N/A:P", "authentication": "NONE", "integrityImpact": "NONE", "accessComplexity": "MEDIUM", "availabilityImpact": "PARTIAL", "confidentialityImpact": "NONE"}, "severity": "MEDIUM", "acInsufInfo": false, "impactScore": 2.9, "obtainAllPrivilege": false, "exploitabilityScore": 8.6, "obtainUserPrivilege": false, "obtainOtherPrivilege": false, "userInteractionRequired": false}, "baseMetricV3": {"cvssV3": {"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}}, "publishedDate": "2020-07-15T17:15Z", "configurations": {"nodes": [{"children": [], "operator": "OR", "cpe_match": [{"cpe23Uri": "cpe:2.3:a:torproject:tor:*:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": true, "versionEndExcluding": "0.3.5.11"}, {"cpe23Uri": "cpe:2.3:a:torproject:tor:*:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": true, "versionEndExcluding": "0.4.2.8", "versionStartExcluding": "0.4.2.0"}, {"cpe23Uri": "cpe:2.3:a:torproject:tor:*:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": true, "versionEndExcluding": "0.4.3.6", "versionStartExcluding": "0.4.3.0"}, {"cpe23Uri": "cpe:2.3:a:torproject:tor:0.4.4.0:alpha:*:*:*:*:*:*", "cpe_name": [], "vulnerable": true}, {"cpe23Uri": "cpe:2.3:a:torproject:tor:0.4.4.1:alpha:*:*:*:*:*:*", "cpe_name": [], "vulnerable": true}]}], "CVE_data_version": "4.0"}, "lastModifiedDate": "2021-07-21T11:39Z"}