gsd-2020-11080
Vulnerability from gsd
Modified
2023-12-13 01:22
Details
In nghttp2 before version 1.41.0, the overly large HTTP/2 SETTINGS frame payload causes denial of service. The proof of concept attack involves a malicious client constructing a SETTINGS frame with a length of 14,400 bytes (2400 individual settings entries) over and over again. The attack causes the CPU to spike at 100%. nghttp2 v1.41.0 fixes this vulnerability. There is a workaround to this vulnerability. Implement nghttp2_on_frame_recv_callback callback, and if received frame is SETTINGS frame and the number of settings entries are large (e.g., > 32), then drop the connection.
Aliases
Aliases
{ "GSD": { "alias": "CVE-2020-11080", "description": "In nghttp2 before version 1.41.0, the overly large HTTP/2 SETTINGS frame payload causes denial of service. The proof of concept attack involves a malicious client constructing a SETTINGS frame with a length of 14,400 bytes (2400 individual settings entries) over and over again. The attack causes the CPU to spike at 100%. nghttp2 v1.41.0 fixes this vulnerability. There is a workaround to this vulnerability. Implement nghttp2_on_frame_recv_callback callback, and if received frame is SETTINGS frame and the number of settings entries are large (e.g., \u003e 32), then drop the connection.", "id": "GSD-2020-11080", "references": [ "https://www.suse.com/security/cve/CVE-2020-11080.html", "https://www.debian.org/security/2020/dsa-4696", "https://access.redhat.com/errata/RHSA-2020:3084", "https://access.redhat.com/errata/RHSA-2020:3042", "https://access.redhat.com/errata/RHSA-2020:2895", "https://access.redhat.com/errata/RHSA-2020:2852", "https://access.redhat.com/errata/RHSA-2020:2850", "https://access.redhat.com/errata/RHSA-2020:2849", "https://access.redhat.com/errata/RHSA-2020:2848", "https://access.redhat.com/errata/RHSA-2020:2847", "https://access.redhat.com/errata/RHSA-2020:2823", "https://access.redhat.com/errata/RHSA-2020:2784", "https://access.redhat.com/errata/RHSA-2020:2755", "https://access.redhat.com/errata/RHSA-2020:2646", "https://access.redhat.com/errata/RHSA-2020:2644", "https://access.redhat.com/errata/RHSA-2020:2524", "https://access.redhat.com/errata/RHSA-2020:2523", "https://advisories.mageia.org/CVE-2020-11080.html", "https://alas.aws.amazon.com/cve/html/CVE-2020-11080.html", "https://linux.oracle.com/cve/CVE-2020-11080.html" ] }, "gsd": { "metadata": { "exploitCode": "unknown", "remediation": "unknown", "reportConfidence": "confirmed", "type": "vulnerability" }, "osvSchema": { "aliases": [ "CVE-2020-11080" ], "details": "In nghttp2 before version 1.41.0, the overly large HTTP/2 SETTINGS frame payload causes denial of service. The proof of concept attack involves a malicious client constructing a SETTINGS frame with a length of 14,400 bytes (2400 individual settings entries) over and over again. The attack causes the CPU to spike at 100%. nghttp2 v1.41.0 fixes this vulnerability. There is a workaround to this vulnerability. Implement nghttp2_on_frame_recv_callback callback, and if received frame is SETTINGS frame and the number of settings entries are large (e.g., \u003e 32), then drop the connection.", "id": "GSD-2020-11080", "modified": "2023-12-13T01:22:05.316413Z", "schema_version": "1.4.0" } }, "namespaces": { "cve.org": { "CVE_data_meta": { "ASSIGNER": "security-advisories@github.com", "ID": "CVE-2020-11080", "STATE": "PUBLIC", "TITLE": "Denial of service in nghttp2" }, "affects": { "vendor": { "vendor_data": [ { "product": { "product_data": [ { "product_name": "nghttp2", "version": { "version_data": [ { "version_value": "\u003c 1.41.0" } ] } } ] }, "vendor_name": "nghttp2" } ] } }, "data_format": "MITRE", "data_type": "CVE", "data_version": "4.0", "description": { "description_data": [ { "lang": "eng", "value": "In nghttp2 before version 1.41.0, the overly large HTTP/2 SETTINGS frame payload causes denial of service. The proof of concept attack involves a malicious client constructing a SETTINGS frame with a length of 14,400 bytes (2400 individual settings entries) over and over again. The attack causes the CPU to spike at 100%. nghttp2 v1.41.0 fixes this vulnerability. There is a workaround to this vulnerability. Implement nghttp2_on_frame_recv_callback callback, and if received frame is SETTINGS frame and the number of settings entries are large (e.g., \u003e 32), then drop the connection." } ] }, "impact": { "cvss": { "attackComplexity": "HIGH", "attackVector": "NETWORK", "availabilityImpact": "LOW", "baseScore": 3.7, "baseSeverity": "LOW", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L", "version": "3.1" } }, "problemtype": { "problemtype_data": [ { "description": [ { "lang": "eng", "value": "CWE-707 Improper Enforcement of Message or Data Structure" } ] } ] }, "references": { "reference_data": [ { "name": "DSA-4696", "refsource": "DEBIAN", "url": "https://www.debian.org/security/2020/dsa-4696" }, { "name": "openSUSE-SU-2020:0802", "refsource": "SUSE", "url": "http://lists.opensuse.org/opensuse-security-announce/2020-06/msg00024.html" }, { 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"https://www.oracle.com/security-alerts/cpuoct2020.html", "refsource": "MISC", "url": "https://www.oracle.com/security-alerts/cpuoct2020.html" }, { "name": "FEDORA-2020-43d5a372fc", "refsource": "FEDORA", "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/4OOYAMJVLLCLXDTHW3V5UXNULZBBK4O6/" }, { "name": "https://www.oracle.com/security-alerts/cpujan2021.html", "refsource": "MISC", "url": "https://www.oracle.com/security-alerts/cpujan2021.html" }, { "name": "https://www.oracle.com//security-alerts/cpujul2021.html", "refsource": "MISC", "url": "https://www.oracle.com//security-alerts/cpujul2021.html" }, { "name": "[debian-lts-announce] 20211017 [SECURITY] [DLA 2786-1] nghttp2 security update", "refsource": "MLIST", "url": "https://lists.debian.org/debian-lts-announce/2021/10/msg00011.html" }, { "name": "https://www.oracle.com/security-alerts/cpuapr2022.html", "refsource": "MISC", "url": 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"data_format": "MITRE", "data_type": "CVE", "data_version": "4.0", "description": { "description_data": [ { "lang": "en", "value": "In nghttp2 before version 1.41.0, the overly large HTTP/2 SETTINGS frame payload causes denial of service. The proof of concept attack involves a malicious client constructing a SETTINGS frame with a length of 14,400 bytes (2400 individual settings entries) over and over again. The attack causes the CPU to spike at 100%. nghttp2 v1.41.0 fixes this vulnerability. There is a workaround to this vulnerability. Implement nghttp2_on_frame_recv_callback callback, and if received frame is SETTINGS frame and the number of settings entries are large (e.g., \u003e 32), then drop the connection." } ] }, "problemtype": { "problemtype_data": [ { "description": [ { "lang": "en", "value": "CWE-707" } ] } ] }, "references": { "reference_data": [ { "name": "https://github.com/nghttp2/nghttp2/commit/f8da73bd042f810f34d19f9eae02b46d870af394", "refsource": "MISC", "tags": [ "Patch", "Third Party Advisory" ], "url": "https://github.com/nghttp2/nghttp2/commit/f8da73bd042f810f34d19f9eae02b46d870af394" }, { "name": "https://github.com/nghttp2/nghttp2/security/advisories/GHSA-q5wr-xfw9-q7xr", "refsource": "CONFIRM", "tags": [ "Patch", "Third Party Advisory" ], "url": "https://github.com/nghttp2/nghttp2/security/advisories/GHSA-q5wr-xfw9-q7xr" }, { "name": "https://github.com/nghttp2/nghttp2/commit/336a98feb0d56b9ac54e12736b18785c27f75090", "refsource": "MISC", "tags": [ "Patch", "Third Party Advisory" ], "url": "https://github.com/nghttp2/nghttp2/commit/336a98feb0d56b9ac54e12736b18785c27f75090" }, { "name": "DSA-4696", "refsource": "DEBIAN", "tags": [ "Third Party Advisory" ], "url": "https://www.debian.org/security/2020/dsa-4696" }, { "name": "openSUSE-SU-2020:0802", "refsource": "SUSE", "tags": [ "Mailing List", "Third Party Advisory" ], "url": "http://lists.opensuse.org/opensuse-security-announce/2020-06/msg00024.html" }, { "name": "FEDORA-2020-f7d15c8b77", "refsource": "FEDORA", "tags": [ "Third Party Advisory" ], "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/AAC2AA36OTRHKSVM5OV7TTVB3CZIGEFL/" }, { "name": "https://www.oracle.com/security-alerts/cpujul2020.html", "refsource": "MISC", "tags": [ "Third Party Advisory" ], "url": "https://www.oracle.com/security-alerts/cpujul2020.html" }, { "name": "https://www.oracle.com/security-alerts/cpuoct2020.html", "refsource": "MISC", "tags": [ "Third Party Advisory" ], "url": "https://www.oracle.com/security-alerts/cpuoct2020.html" }, { "name": "FEDORA-2020-43d5a372fc", "refsource": "FEDORA", "tags": [ "Third Party Advisory" ], "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/4OOYAMJVLLCLXDTHW3V5UXNULZBBK4O6/" }, { "name": "https://www.oracle.com/security-alerts/cpujan2021.html", "refsource": "MISC", "tags": [ "Third Party Advisory" ], "url": "https://www.oracle.com/security-alerts/cpujan2021.html" }, { "name": "N/A", "refsource": "N/A", "tags": [ "Not Applicable", "Third Party Advisory" ], "url": "https://www.oracle.com//security-alerts/cpujul2021.html" }, { "name": "[debian-lts-announce] 20211017 [SECURITY] [DLA 2786-1] nghttp2 security update", "refsource": "MLIST", "tags": [ "Mailing List", "Third Party Advisory" ], "url": "https://lists.debian.org/debian-lts-announce/2021/10/msg00011.html" }, { "name": "https://www.oracle.com/security-alerts/cpuapr2022.html", "refsource": "MISC", "tags": [ "Patch", "Third Party Advisory" ], "url": "https://www.oracle.com/security-alerts/cpuapr2022.html" }, { "name": "[debian-lts-announce] 20231016 [SECURITY] [DLA 3621-1] nghttp2 security update", "refsource": "MLIST", "tags": [], "url": "https://lists.debian.org/debian-lts-announce/2023/10/msg00023.html" } ] } }, "impact": { "baseMetricV2": { "acInsufInfo": false, "cvssV2": { "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, "severity": "MEDIUM", "userInteractionRequired": false }, "baseMetricV3": { "cvssV3": { "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 } }, "lastModifiedDate": "2023-10-16T18:15Z", "publishedDate": "2020-06-03T23:15Z" } } }
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