CVE-2021-21240
Vulnerability from cvelistv5
Published
2021-02-08 19:45
Modified
2024-08-03 18:09
Severity ?
EPSS score ?
Summary
httplib2 is a comprehensive HTTP client library for Python. In httplib2 before version 0.19.0, a malicious server which responds with long series of "\xa0" characters in the "www-authenticate" header may cause Denial of Service (CPU burn while parsing header) of the httplib2 client accessing said server. This is fixed in version 0.19.0 which contains a new implementation of auth headers parsing using the pyparsing library.
References
{ "containers": { "adp": [ { "providerMetadata": { "dateUpdated": "2024-08-03T18:09:14.827Z", "orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE" }, "references": [ { "tags": [ "x_refsource_CONFIRM", "x_transferred" ], "url": "https://github.com/httplib2/httplib2/security/advisories/GHSA-93xj-8mrv-444m" }, { "tags": [ "x_refsource_MISC", "x_transferred" ], "url": "https://github.com/httplib2/httplib2/pull/182" }, { "tags": [ "x_refsource_MISC", "x_transferred" ], "url": "https://github.com/httplib2/httplib2/commit/bd9ee252c8f099608019709e22c0d705e98d26bc" }, { "tags": [ "x_refsource_MISC", "x_transferred" ], "url": "https://pypi.org/project/httplib2" } ], "title": "CVE Program Container" } ], "cna": { "affected": [ { "product": "httplib2", "vendor": "httplib2", "versions": [ { "status": "affected", "version": "\u003c 0.19.0" } ] } ], "descriptions": [ { "lang": "en", "value": "httplib2 is a comprehensive HTTP client library for Python. In httplib2 before version 0.19.0, a malicious server which responds with long series of \"\\xa0\" characters in the \"www-authenticate\" header may cause Denial of Service (CPU burn while parsing header) of the httplib2 client accessing said server. This is fixed in version 0.19.0 which contains a new implementation of auth headers parsing using the pyparsing library." } ], "metrics": [ { "cvssV3_1": { "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" } } ], "problemTypes": [ { "descriptions": [ { "cweId": "CWE-400", "description": "CWE-400 Uncontrolled Resource Consumption", "lang": "en", "type": "CWE" } ] } ], "providerMetadata": { "dateUpdated": "2021-02-08T19:45:19", "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M" }, "references": [ { "tags": [ "x_refsource_CONFIRM" ], "url": "https://github.com/httplib2/httplib2/security/advisories/GHSA-93xj-8mrv-444m" }, { "tags": [ "x_refsource_MISC" ], "url": "https://github.com/httplib2/httplib2/pull/182" }, { "tags": [ "x_refsource_MISC" ], "url": "https://github.com/httplib2/httplib2/commit/bd9ee252c8f099608019709e22c0d705e98d26bc" }, { "tags": [ "x_refsource_MISC" ], "url": "https://pypi.org/project/httplib2" } ], "source": { "advisory": "GHSA-93xj-8mrv-444m", "discovery": "UNKNOWN" }, "title": "Regular Expression Denial of Service in httplib2", "x_legacyV4Record": { "CVE_data_meta": { "ASSIGNER": "security-advisories@github.com", "ID": "CVE-2021-21240", "STATE": "PUBLIC", "TITLE": "Regular Expression Denial of Service in httplib2" }, "affects": { "vendor": { "vendor_data": [ { "product": { "product_data": [ { "product_name": "httplib2", "version": { "version_data": [ { "version_value": "\u003c 0.19.0" } ] } } ] }, "vendor_name": "httplib2" } ] } }, "data_format": "MITRE", "data_type": "CVE", "data_version": "4.0", "description": { "description_data": [ { "lang": "eng", "value": "httplib2 is a comprehensive HTTP client library for Python. In httplib2 before version 0.19.0, a malicious server which responds with long series of \"\\xa0\" characters in the \"www-authenticate\" header may cause Denial of Service (CPU burn while parsing header) of the httplib2 client accessing said server. This is fixed in version 0.19.0 which contains a new implementation of auth headers parsing using the pyparsing library." } ] }, "impact": { "cvss": { "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" } }, "problemtype": { "problemtype_data": [ { "description": [ { "lang": "eng", "value": "CWE-400 Uncontrolled Resource Consumption" } ] } ] }, "references": { "reference_data": [ { "name": "https://github.com/httplib2/httplib2/security/advisories/GHSA-93xj-8mrv-444m", "refsource": "CONFIRM", "url": "https://github.com/httplib2/httplib2/security/advisories/GHSA-93xj-8mrv-444m" }, { "name": "https://github.com/httplib2/httplib2/pull/182", "refsource": "MISC", "url": "https://github.com/httplib2/httplib2/pull/182" }, { "name": "https://github.com/httplib2/httplib2/commit/bd9ee252c8f099608019709e22c0d705e98d26bc", "refsource": "MISC", "url": "https://github.com/httplib2/httplib2/commit/bd9ee252c8f099608019709e22c0d705e98d26bc" }, { "name": "https://pypi.org/project/httplib2", "refsource": "MISC", "url": "https://pypi.org/project/httplib2" } ] }, "source": { "advisory": "GHSA-93xj-8mrv-444m", "discovery": "UNKNOWN" } } } }, "cveMetadata": { "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "assignerShortName": "GitHub_M", "cveId": "CVE-2021-21240", "datePublished": "2021-02-08T19:45:19", "dateReserved": "2020-12-22T00:00:00", "dateUpdated": "2024-08-03T18:09:14.827Z", "state": "PUBLISHED" }, "dataType": "CVE_RECORD", "dataVersion": "5.1", "vulnerability-lookup:meta": { "nvd": "{\"cve\":{\"id\":\"CVE-2021-21240\",\"sourceIdentifier\":\"security-advisories@github.com\",\"published\":\"2021-02-08T20:15:12.197\",\"lastModified\":\"2024-11-21T05:47:50.650\",\"vulnStatus\":\"Modified\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"httplib2 is a comprehensive HTTP client library for Python. In httplib2 before version 0.19.0, a malicious server which responds with long series of \\\"\\\\xa0\\\" characters in the \\\"www-authenticate\\\" header may cause Denial of Service (CPU burn while parsing header) of the httplib2 client accessing said server. This is fixed in version 0.19.0 which contains a new implementation of auth headers parsing using the pyparsing library.\"},{\"lang\":\"es\",\"value\":\"httplib2 es una biblioteca cliente HTTP completa para Python.\u0026#xa0;En httplib2 anterior a la versi\u00f3n 0.19.0, un servidor malicioso que responde con una larga serie de caracteres \\\"\\\\xa0\\\" en el encabezado \\\"www-authenticate\\\" puede causar una Denegaci\u00f3n de Servicio (CPU quemada mientras analiza el encabezado) del cliente httplib2 que accede a dicho servidor.\u0026#xa0;Esto se corrigi\u00f3 en la versi\u00f3n 0.19.0, que contiene una nueva implementaci\u00f3n de an\u00e1lisis de encabezados de autenticaci\u00f3n usando la biblioteca pyparsing\"}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"security-advisories@github.com\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H\",\"baseScore\":7.5,\"baseSeverity\":\"HIGH\",\"attackVector\":\"NETWORK\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"NONE\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":3.9,\"impactScore\":3.6},{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H\",\"baseScore\":7.5,\"baseSeverity\":\"HIGH\",\"attackVector\":\"NETWORK\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"NONE\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":3.9,\"impactScore\":3.6}],\"cvssMetricV2\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"2.0\",\"vectorString\":\"AV:N/AC:L/Au:N/C:N/I:N/A:P\",\"baseScore\":5.0,\"accessVector\":\"NETWORK\",\"accessComplexity\":\"LOW\",\"authentication\":\"NONE\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"PARTIAL\"},\"baseSeverity\":\"MEDIUM\",\"exploitabilityScore\":10.0,\"impactScore\":2.9,\"acInsufInfo\":false,\"obtainAllPrivilege\":false,\"obtainUserPrivilege\":false,\"obtainOtherPrivilege\":false,\"userInteractionRequired\":false}]},\"weaknesses\":[{\"source\":\"security-advisories@github.com\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-400\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:httplib2_project:httplib2:*:*:*:*:*:python:*:*\",\"versionEndExcluding\":\"0.19.0\",\"matchCriteriaId\":\"D5BA135E-6889-4A5D-88F6-1AD4DBC498BE\"}]}]}],\"references\":[{\"url\":\"https://github.com/httplib2/httplib2/commit/bd9ee252c8f099608019709e22c0d705e98d26bc\",\"source\":\"security-advisories@github.com\",\"tags\":[\"Patch\",\"Third Party Advisory\"]},{\"url\":\"https://github.com/httplib2/httplib2/pull/182\",\"source\":\"security-advisories@github.com\",\"tags\":[\"Patch\",\"Third Party Advisory\"]},{\"url\":\"https://github.com/httplib2/httplib2/security/advisories/GHSA-93xj-8mrv-444m\",\"source\":\"security-advisories@github.com\",\"tags\":[\"Exploit\",\"Mitigation\",\"Third Party Advisory\"]},{\"url\":\"https://pypi.org/project/httplib2\",\"source\":\"security-advisories@github.com\",\"tags\":[\"Product\",\"Third Party Advisory\"]},{\"url\":\"https://github.com/httplib2/httplib2/commit/bd9ee252c8f099608019709e22c0d705e98d26bc\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Patch\",\"Third Party Advisory\"]},{\"url\":\"https://github.com/httplib2/httplib2/pull/182\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Patch\",\"Third Party Advisory\"]},{\"url\":\"https://github.com/httplib2/httplib2/security/advisories/GHSA-93xj-8mrv-444m\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Exploit\",\"Mitigation\",\"Third Party Advisory\"]},{\"url\":\"https://pypi.org/project/httplib2\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Product\",\"Third Party Advisory\"]}]}}" } }
Loading…
Loading…
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.
- 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.