261 lines
12 KiB
JSON
261 lines
12 KiB
JSON
{
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"containers": {
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"cna": {
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"affected": [
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{
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"product": "synapse",
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"vendor": "matrix-org",
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"versions": [
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{
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"status": "affected",
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"version": ">=0.99.0, < 1.25.0"
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}
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]
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}
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],
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"descriptions": [
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{
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"lang": "en",
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"value": "Synapse is a Matrix reference homeserver written in python (pypi package matrix-synapse). Matrix is an ecosystem for open federated Instant Messaging and VoIP. In Synapse before version 1.25.0, a malicious homeserver could redirect requests to their .well-known file to a large file. This can lead to a denial of service attack where homeservers will consume significantly more resources when requesting the .well-known file of a malicious homeserver. This affects any server which accepts federation requests from untrusted servers. Issue is resolved in version 1.25.0. As a workaround the `federation_domain_whitelist` setting can be used to restrict the homeservers communicated with over federation."
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}
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],
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"metrics": [
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{
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"cvssV3_1": {
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"attackComplexity": "LOW",
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"attackVector": "NETWORK",
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"availabilityImpact": "LOW",
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"baseScore": 4.3,
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"baseSeverity": "MEDIUM",
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"confidentialityImpact": "NONE",
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"integrityImpact": "NONE",
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"privilegesRequired": "NONE",
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"scope": "UNCHANGED",
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"userInteraction": "REQUIRED",
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"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L",
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"version": "3.1"
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}
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}
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],
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"problemTypes": [
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{
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"descriptions": [
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{
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"cweId": "CWE-400",
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"description": "CWE-400 Uncontrolled Resource Consumption",
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"lang": "en",
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"type": "CWE"
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}
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]
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}
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],
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"providerMetadata": {
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"dateUpdated": "2021-08-02T02:06:23.000Z",
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"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
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"shortName": "GitHub_M"
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},
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"references": [
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{
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"tags": [
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"x_refsource_CONFIRM"
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],
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"url": "https://github.com/matrix-org/synapse/security/advisories/GHSA-2hwx-mjrm-v3g8"
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},
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{
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"tags": [
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"x_refsource_MISC"
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],
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"url": "https://github.com/matrix-org/synapse/releases/tag/v1.25.0"
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},
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{
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"tags": [
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"x_refsource_MISC"
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],
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"url": "https://github.com/matrix-org/synapse/pull/8950"
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},
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{
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"tags": [
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"x_refsource_MISC"
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],
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"url": "https://github.com/matrix-org/synapse/commit/ff5c4da1289cb5e097902b3e55b771be342c29d6"
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},
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{
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"name": "FEDORA-2021-a627cfd31e",
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"tags": [
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"vendor-advisory",
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"x_refsource_FEDORA"
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],
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"url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/TNNAJOZNMVMXM6AS7RFFKB4QLUJ4IFEY/"
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}
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],
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"source": {
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"advisory": "GHSA-2hwx-mjrm-v3g8",
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"discovery": "UNKNOWN"
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},
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"title": "Denial of service attack via .well-known lookups",
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"x_legacyV4Record": {
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"CVE_data_meta": {
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"ASSIGNER": "security-advisories@github.com",
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"ID": "CVE-2021-21274",
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"STATE": "PUBLIC",
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"TITLE": "Denial of service attack via .well-known lookups"
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},
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"affects": {
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"vendor": {
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"vendor_data": [
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{
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"product": {
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"product_data": [
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{
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"product_name": "synapse",
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"version": {
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"version_data": [
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{
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"version_value": ">=0.99.0, < 1.25.0"
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}
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]
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}
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}
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]
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},
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"vendor_name": "matrix-org"
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}
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]
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}
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},
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"data_format": "MITRE",
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"data_type": "CVE",
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"data_version": "4.0",
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"description": {
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"description_data": [
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{
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"lang": "eng",
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"value": "Synapse is a Matrix reference homeserver written in python (pypi package matrix-synapse). Matrix is an ecosystem for open federated Instant Messaging and VoIP. In Synapse before version 1.25.0, a malicious homeserver could redirect requests to their .well-known file to a large file. This can lead to a denial of service attack where homeservers will consume significantly more resources when requesting the .well-known file of a malicious homeserver. This affects any server which accepts federation requests from untrusted servers. Issue is resolved in version 1.25.0. As a workaround the `federation_domain_whitelist` setting can be used to restrict the homeservers communicated with over federation."
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}
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]
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},
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"impact": {
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"cvss": {
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"attackComplexity": "LOW",
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"attackVector": "NETWORK",
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"availabilityImpact": "LOW",
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"baseScore": 4.3,
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"baseSeverity": "MEDIUM",
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"confidentialityImpact": "NONE",
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"integrityImpact": "NONE",
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"privilegesRequired": "NONE",
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"scope": "UNCHANGED",
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"userInteraction": "REQUIRED",
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"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L",
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"version": "3.1"
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}
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},
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"problemtype": {
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"problemtype_data": [
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{
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"description": [
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{
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"lang": "eng",
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"value": "CWE-400 Uncontrolled Resource Consumption"
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}
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]
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}
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]
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},
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"references": {
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"reference_data": [
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{
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"name": "https://github.com/matrix-org/synapse/security/advisories/GHSA-2hwx-mjrm-v3g8",
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"refsource": "CONFIRM",
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"url": "https://github.com/matrix-org/synapse/security/advisories/GHSA-2hwx-mjrm-v3g8"
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},
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{
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"name": "https://github.com/matrix-org/synapse/releases/tag/v1.25.0",
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"refsource": "MISC",
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"url": "https://github.com/matrix-org/synapse/releases/tag/v1.25.0"
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},
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{
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"name": "https://github.com/matrix-org/synapse/pull/8950",
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"refsource": "MISC",
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"url": "https://github.com/matrix-org/synapse/pull/8950"
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},
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{
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"name": "https://github.com/matrix-org/synapse/commit/ff5c4da1289cb5e097902b3e55b771be342c29d6",
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"refsource": "MISC",
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"url": "https://github.com/matrix-org/synapse/commit/ff5c4da1289cb5e097902b3e55b771be342c29d6"
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},
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{
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"name": "FEDORA-2021-a627cfd31e",
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"refsource": "FEDORA",
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"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/TNNAJOZNMVMXM6AS7RFFKB4QLUJ4IFEY/"
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}
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]
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},
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"source": {
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"advisory": "GHSA-2hwx-mjrm-v3g8",
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"discovery": "UNKNOWN"
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}
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}
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},
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"adp": [
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{
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"providerMetadata": {
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"orgId": "af854a3a-2127-422b-91ae-364da2661108",
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"shortName": "CVE",
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"dateUpdated": "2024-08-03T18:09:15.070Z"
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},
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"title": "CVE Program Container",
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"references": [
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{
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"tags": [
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"x_refsource_CONFIRM",
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"x_transferred"
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],
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"url": "https://github.com/matrix-org/synapse/security/advisories/GHSA-2hwx-mjrm-v3g8"
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},
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{
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"tags": [
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"x_refsource_MISC",
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"x_transferred"
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],
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"url": "https://github.com/matrix-org/synapse/releases/tag/v1.25.0"
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},
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{
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"tags": [
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"x_refsource_MISC",
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"x_transferred"
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],
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"url": "https://github.com/matrix-org/synapse/pull/8950"
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},
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{
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"tags": [
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"x_refsource_MISC",
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"x_transferred"
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],
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"url": "https://github.com/matrix-org/synapse/commit/ff5c4da1289cb5e097902b3e55b771be342c29d6"
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},
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{
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"name": "FEDORA-2021-a627cfd31e",
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"tags": [
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"vendor-advisory",
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"x_refsource_FEDORA",
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"x_transferred"
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],
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"url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/TNNAJOZNMVMXM6AS7RFFKB4QLUJ4IFEY/"
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}
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]
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}
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]
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},
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"cveMetadata": {
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"assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
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"assignerShortName": "GitHub_M",
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"cveId": "CVE-2021-21274",
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"datePublished": "2021-02-26T17:25:16.000Z",
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"dateReserved": "2020-12-22T00:00:00.000Z",
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"dateUpdated": "2024-08-03T18:09:15.070Z",
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"state": "PUBLISHED"
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},
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"dataType": "CVE_RECORD",
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"dataVersion": "5.1"
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} |