cve-2021-31618
Vulnerability from cvelistv5
Published
2021-06-15 00:00
Modified
2024-08-03 23:03
Severity ?
EPSS score ?
Summary
NULL pointer dereference on specially crafted HTTP/2 request
References
Impacted products
▼ | Vendor | Product |
---|---|---|
Apache Software Foundation | Apache HTTP Server |
{ "containers": { "adp": [ { "metrics": [ { "other": { "content": { "id": "CVE-2021-31618", "options": [ { "Exploitation": "none" }, { "Automatable": "yes" }, { "Technical Impact": "partial" } ], "role": "CISA Coordinator", "timestamp": "2024-05-20T16:18:33.082195Z", "version": "2.0.3" }, "type": "ssvc" } } ], "providerMetadata": { "dateUpdated": "2024-06-04T17:12:39.340Z", "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP" }, "title": "CISA ADP Vulnrichment" }, { "providerMetadata": { "dateUpdated": "2024-08-03T23:03:33.651Z", "orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE" }, "references": [ { "tags": [ "x_transferred" ], "url": "http://httpd.apache.org/security/vulnerabilities_24.html" }, { "name": "[oss-security] 20210609 CVE-2021-31618: Apache httpd: NULL pointer dereference on specially crafted HTTP/2 request", "tags": [ "mailing-list", "x_transferred" ], "url": "http://www.openwall.com/lists/oss-security/2021/06/10/9" }, { "tags": [ "x_transferred" ], "url": "https://seclists.org/oss-sec/2021/q2/206" }, { "name": "[httpd-cvs] 20210615 svn commit: r1890801 - /httpd/site/trunk/content/security/json/CVE-2021-31618.json", "tags": [ "mailing-list", "x_transferred" ], "url": "https://lists.apache.org/thread.html/r14b66ef0f4f569fd515a3f96cd4eb58bd9a8ff525cc326bb0359664f%40%3Ccvs.httpd.apache.org%3E" }, { "name": "[httpd-cvs] 20210615 svn commit: r1075782 - in /websites/staging/httpd/trunk/content: ./ security/json/CVE-2021-31618.json security/vulnerabilities_24.html", "tags": [ "mailing-list", "x_transferred" ], "url": "https://lists.apache.org/thread.html/r783b6558abf3305b17ea462bed4bd66d82866438999bf38cef6d11d1%40%3Ccvs.httpd.apache.org%3E" }, { "name": "FEDORA-2021-051639aad4", "tags": [ "vendor-advisory", "x_transferred" ], "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/2NKJ3ZA3FTSZ2QBBPKS6BYGAWYRABNQQ/" }, { "name": "FEDORA-2021-181f29c392", "tags": [ "vendor-advisory", "x_transferred" ], "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/A73QJ4HPUMU26I6EULG6SCK67TUEXZYR/" }, { "name": "[debian-lts-announce] 20210709 [SECURITY] [DLA 2706-1] apache2 security update", "tags": [ "mailing-list", "x_transferred" ], "url": "https://lists.debian.org/debian-lts-announce/2021/07/msg00006.html" }, { "name": "DSA-4937", "tags": [ "vendor-advisory", "x_transferred" ], "url": "https://www.debian.org/security/2021/dsa-4937" }, { "name": "GLSA-202107-38", "tags": [ "vendor-advisory", "x_transferred" ], "url": "https://security.gentoo.org/glsa/202107-38" }, { "tags": [ "x_transferred" ], "url": "https://www.oracle.com/security-alerts/cpuoct2021.html" }, { "tags": [ "x_transferred" ], "url": "https://security.netapp.com/advisory/ntap-20210727-0008/" }, { "name": "[oss-security] 20240313 Re: CVE-2021-31618: Apache httpd: NULL pointer dereference on specially crafted HTTP/2 request", "tags": [ "mailing-list", "x_transferred" ], "url": "http://www.openwall.com/lists/oss-security/2024/03/13/2" } ], "title": "CVE Program Container" } ], "cna": { "affected": [ { "product": "Apache HTTP Server", "vendor": "Apache Software Foundation", "versions": [ { "status": "affected", "version": "2.4.47" } ] } ], "credits": [ { "lang": "en", "value": "Apache HTTP server would like to thank LI ZHI XIN from NSFocus for reporting this." } ], "descriptions": [ { "lang": "en", "value": "Apache HTTP Server protocol handler for the HTTP/2 protocol checks received request headers against the size limitations as configured for the server and used for the HTTP/1 protocol as well. On violation of these restrictions and HTTP response is sent to the client with a status code indicating why the request was rejected. This rejection response was not fully initialised in the HTTP/2 protocol handler if the offending header was the very first one received or appeared in a a footer. This led to a NULL pointer dereference on initialised memory, crashing reliably the child process. Since such a triggering HTTP/2 request is easy to craft and submit, this can be exploited to DoS the server. This issue affected mod_http2 1.15.17 and Apache HTTP Server version 2.4.47 only. Apache HTTP Server 2.4.47 was never released." } ], "metrics": [ { "other": { "content": { "other": "important" }, "type": "unknown" } } ], "problemTypes": [ { "descriptions": [ { "cweId": "CWE-476", "description": "CWE-476 NULL Pointer Dereference", "lang": "en", "type": "CWE" } ] } ], "providerMetadata": { "dateUpdated": "2024-05-01T17:10:59.750770", "orgId": "f0158376-9dc2-43b6-827c-5f631a4d8d09", "shortName": "apache" }, "references": [ { "url": "http://httpd.apache.org/security/vulnerabilities_24.html" }, { "name": "[oss-security] 20210609 CVE-2021-31618: Apache httpd: NULL pointer dereference on specially crafted HTTP/2 request", "tags": [ "mailing-list" ], "url": "http://www.openwall.com/lists/oss-security/2021/06/10/9" }, { "url": "https://seclists.org/oss-sec/2021/q2/206" }, { "name": "[httpd-cvs] 20210615 svn commit: r1890801 - /httpd/site/trunk/content/security/json/CVE-2021-31618.json", "tags": [ "mailing-list" ], "url": "https://lists.apache.org/thread.html/r14b66ef0f4f569fd515a3f96cd4eb58bd9a8ff525cc326bb0359664f%40%3Ccvs.httpd.apache.org%3E" }, { "name": "[httpd-cvs] 20210615 svn commit: r1075782 - in /websites/staging/httpd/trunk/content: ./ security/json/CVE-2021-31618.json security/vulnerabilities_24.html", "tags": [ "mailing-list" ], "url": "https://lists.apache.org/thread.html/r783b6558abf3305b17ea462bed4bd66d82866438999bf38cef6d11d1%40%3Ccvs.httpd.apache.org%3E" }, { "name": "FEDORA-2021-051639aad4", "tags": [ "vendor-advisory" ], "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/2NKJ3ZA3FTSZ2QBBPKS6BYGAWYRABNQQ/" }, { "name": "FEDORA-2021-181f29c392", "tags": [ "vendor-advisory" ], "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/A73QJ4HPUMU26I6EULG6SCK67TUEXZYR/" }, { "name": "[debian-lts-announce] 20210709 [SECURITY] [DLA 2706-1] apache2 security update", "tags": [ "mailing-list" ], "url": "https://lists.debian.org/debian-lts-announce/2021/07/msg00006.html" }, { "name": "DSA-4937", "tags": [ "vendor-advisory" ], "url": "https://www.debian.org/security/2021/dsa-4937" }, { "name": "GLSA-202107-38", "tags": [ "vendor-advisory" ], "url": "https://security.gentoo.org/glsa/202107-38" }, { "url": "https://www.oracle.com/security-alerts/cpuoct2021.html" }, { "url": "https://security.netapp.com/advisory/ntap-20210727-0008/" }, { "name": "[oss-security] 20240313 Re: CVE-2021-31618: Apache httpd: NULL pointer dereference on specially crafted HTTP/2 request", "tags": [ "mailing-list" ], "url": "http://www.openwall.com/lists/oss-security/2024/03/13/2" } ], "source": { "discovery": "UNKNOWN" }, "title": "NULL pointer dereference on specially crafted HTTP/2 request", "workarounds": [ { "lang": "en", "value": "On unpatched servers, the `h2` protocol can be disabled by removing it from the `Protocols` configuration. If the `h2` protocol is not enabled, the server is not affected by this vulnerability." } ], "x_generator": { "engine": "Vulnogram 0.0.9" } } }, "cveMetadata": { "assignerOrgId": "f0158376-9dc2-43b6-827c-5f631a4d8d09", "assignerShortName": "apache", "cveId": "CVE-2021-31618", "datePublished": "2021-06-15T00:00:00", "dateReserved": "2021-04-23T00:00:00", "dateUpdated": "2024-08-03T23:03:33.651Z", "state": "PUBLISHED" }, "dataType": "CVE_RECORD", "dataVersion": "5.1", "meta": { "nvd": "{\"cve\":{\"id\":\"CVE-2021-31618\",\"sourceIdentifier\":\"security@apache.org\",\"published\":\"2021-06-15T09:15:07.960\",\"lastModified\":\"2024-05-01T17:15:24.167\",\"vulnStatus\":\"Modified\",\"descriptions\":[{\"lang\":\"en\",\"value\":\"Apache HTTP Server protocol handler for the HTTP/2 protocol checks received request headers against the size limitations as configured for the server and used for the HTTP/1 protocol as well. On violation of these restrictions and HTTP response is sent to the client with a status code indicating why the request was rejected. This rejection response was not fully initialised in the HTTP/2 protocol handler if the offending header was the very first one received or appeared in a a footer. This led to a NULL pointer dereference on initialised memory, crashing reliably the child process. Since such a triggering HTTP/2 request is easy to craft and submit, this can be exploited to DoS the server. This issue affected mod_http2 1.15.17 and Apache HTTP Server version 2.4.47 only. Apache HTTP Server 2.4.47 was never released.\"},{\"lang\":\"es\",\"value\":\"El administrador de protocolos del servidor HTTP Apache para el protocolo HTTP/2 comprueba las encabezados de las peticiones recibidas frente a las limitaciones de tama\u00f1o configuradas para el servidor y usadas tambi\u00e9n para el protocolo HTTP/1. En caso de violaci\u00f3n de estas restricciones, se env\u00eda una respuesta HTTP al cliente con un c\u00f3digo de estado indicando por qu\u00e9 se ha rechazado la petici\u00f3n. Esta respuesta de rechazo no se inicializaba completamente en el manejador del protocolo HTTP/2 si la cabecera infractora era la primera que se recib\u00eda o aparec\u00eda en un pie de p\u00e1gina. Esto conllevaba una desviaci\u00f3n del puntero NULL en la memoria inicializada, bloqueando de forma fiable el proceso hijo. Dado que desencadenar una petici\u00f3n HTTP/2 de este tipo es f\u00e1cil de dise\u00f1ar y enviar, esto puede ser explotado para hacer una DoS al servidor. Este problema afectaba \u00fanicamente a mod_http2 versi\u00f3n 1.15.17 y a la versi\u00f3n 2.4.47 del servidor HTTP de Apache. Apache HTTP Server versi\u00f3n 2.4.47 nunca fue liberado\"}],\"metrics\":{\"cvssMetricV31\":[{\"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\",\"attackVector\":\"NETWORK\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"NONE\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"HIGH\",\"baseScore\":7.5,\"baseSeverity\":\"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\",\"accessVector\":\"NETWORK\",\"accessComplexity\":\"LOW\",\"authentication\":\"NONE\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"PARTIAL\",\"baseScore\":5.0},\"baseSeverity\":\"MEDIUM\",\"exploitabilityScore\":10.0,\"impactScore\":2.9,\"acInsufInfo\":false,\"obtainAllPrivilege\":false,\"obtainUserPrivilege\":false,\"obtainOtherPrivilege\":false,\"userInteractionRequired\":false}]},\"weaknesses\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-476\"}]},{\"source\":\"security@apache.org\",\"type\":\"Secondary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-476\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:apache:http_server:1.15.17:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"C0F7A719-7301-47ED-9AC2-5878FA93EC92\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:apache:http_server:2.4.47:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"7B335598-BC0C-4993-944B-23798F0CF818\"}]}]},{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"E460AA51-FCDA-46B9-AE97-E6676AA5E194\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"A930E247-0B43-43CB-98FF-6CE7B8189835\"}]}]},{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"DEECE5FC-CACF-4496-A3E7-164736409252\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"07B237A9-69A3-4A9C-9DA0-4E06BD37AE73\"}]}]},{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:oracle:enterprise_manager_ops_center:12.4.0.0:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"B095CC03-7077-4A58-AB25-CC5380CDCE5A\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:oracle:instantis_enterprisetrack:17.1:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"82EA4BA7-C38B-4AF3-8914-9E3D089EBDD4\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:oracle:instantis_enterprisetrack:17.2:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"B9C9BC66-FA5F-4774-9BDA-7AB88E2839C4\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:oracle:instantis_enterprisetrack:17.3:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"7F69B9A5-F21B-4904-9F27-95C0F7A628E3\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:oracle:zfs_storage_appliance_kit:8.8:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"D3E503FB-6279-4D4A-91D8-E237ECF9D2B0\"}]}]}],\"references\":[{\"url\":\"http://httpd.apache.org/security/vulnerabilities_24.html\",\"source\":\"security@apache.org\",\"tags\":[\"Release Notes\",\"Vendor Advisory\"]},{\"url\":\"http://www.openwall.com/lists/oss-security/2021/06/10/9\",\"source\":\"security@apache.org\",\"tags\":[\"Mailing List\",\"Third Party Advisory\"]},{\"url\":\"http://www.openwall.com/lists/oss-security/2024/03/13/2\",\"source\":\"security@apache.org\"},{\"url\":\"https://lists.apache.org/thread.html/r14b66ef0f4f569fd515a3f96cd4eb58bd9a8ff525cc326bb0359664f%40%3Ccvs.httpd.apache.org%3E\",\"source\":\"security@apache.org\"},{\"url\":\"https://lists.apache.org/thread.html/r783b6558abf3305b17ea462bed4bd66d82866438999bf38cef6d11d1%40%3Ccvs.httpd.apache.org%3E\",\"source\":\"security@apache.org\"},{\"url\":\"https://lists.debian.org/debian-lts-announce/2021/07/msg00006.html\",\"source\":\"security@apache.org\",\"tags\":[\"Mailing List\",\"Third Party Advisory\"]},{\"url\":\"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/2NKJ3ZA3FTSZ2QBBPKS6BYGAWYRABNQQ/\",\"source\":\"security@apache.org\"},{\"url\":\"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/A73QJ4HPUMU26I6EULG6SCK67TUEXZYR/\",\"source\":\"security@apache.org\"},{\"url\":\"https://seclists.org/oss-sec/2021/q2/206\",\"source\":\"security@apache.org\",\"tags\":[\"Mailing List\",\"Third Party Advisory\"]},{\"url\":\"https://security.gentoo.org/glsa/202107-38\",\"source\":\"security@apache.org\",\"tags\":[\"Third Party Advisory\"]},{\"url\":\"https://security.netapp.com/advisory/ntap-20210727-0008/\",\"source\":\"security@apache.org\",\"tags\":[\"Third Party Advisory\"]},{\"url\":\"https://www.debian.org/security/2021/dsa-4937\",\"source\":\"security@apache.org\",\"tags\":[\"Third Party Advisory\"]},{\"url\":\"https://www.oracle.com/security-alerts/cpuoct2021.html\",\"source\":\"security@apache.org\",\"tags\":[\"Patch\",\"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.