gsd-2022-41952
Vulnerability from gsd
Modified
2023-12-13 01:19
Details
Synapse before 1.52.0 with URL preview functionality enabled will attempt to generate URL previews for media stream URLs without properly limiting connection time. Connections will only be terminated after `max_spider_size` (default: 10M) bytes have been downloaded, which can in some cases lead to long-lived connections towards the streaming media server (for instance, Icecast). This can cause excessive traffic and connections toward such servers if their stream URL is, for example, posted to a large room with many Synapse instances with URL preview enabled. Version 1.52.0 implements a timeout mechanism which will terminate URL preview connections after 30 seconds. Since generating URL previews for media streams is not supported and always fails, 1.53.0 additionally implements an allow list for content types for which Synapse will even attempt to generate a URL preview. Upgrade to 1.53.0 to fully resolve the issue. As a workaround, turn off URL preview functionality by setting `url_preview_enabled: false` in the Synapse configuration file.
Aliases
Aliases
{
"GSD": {
"alias": "CVE-2022-41952",
"id": "GSD-2022-41952",
"references": [
"https://www.suse.com/security/cve/CVE-2022-41952.html"
]
},
"gsd": {
"metadata": {
"exploitCode": "unknown",
"remediation": "unknown",
"reportConfidence": "confirmed",
"type": "vulnerability"
},
"osvSchema": {
"aliases": [
"CVE-2022-41952"
],
"details": "Synapse before 1.52.0 with URL preview functionality enabled will attempt to generate URL previews for media stream URLs without properly limiting connection time. Connections will only be terminated after `max_spider_size` (default: 10M) bytes have been downloaded, which can in some cases lead to long-lived connections towards the streaming media server (for instance, Icecast). This can cause excessive traffic and connections toward such servers if their stream URL is, for example, posted to a large room with many Synapse instances with URL preview enabled. Version 1.52.0 implements a timeout mechanism which will terminate URL preview connections after 30 seconds. Since generating URL previews for media streams is not supported and always fails, 1.53.0 additionally implements an allow list for content types for which Synapse will even attempt to generate a URL preview. Upgrade to 1.53.0 to fully resolve the issue. As a workaround, turn off URL preview functionality by setting `url_preview_enabled: false` in the Synapse configuration file.",
"id": "GSD-2022-41952",
"modified": "2023-12-13T01:19:32.484553Z",
"schema_version": "1.4.0"
}
},
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"ID": "CVE-2022-41952",
"STATE": "PUBLIC",
"TITLE": "Uncontrolled Resource Consumption in Matrix Synapse "
},
"affects": {
"vendor": {
"vendor_data": [
{
"product": {
"product_data": [
{
"product_name": "synapse",
"version": {
"version_data": [
{
"version_value": "\u003c 1.53.0"
}
]
}
}
]
},
"vendor_name": "matrix-org"
}
]
}
},
"data_format": "MITRE",
"data_type": "CVE",
"data_version": "4.0",
"description": {
"description_data": [
{
"lang": "eng",
"value": "Synapse before 1.52.0 with URL preview functionality enabled will attempt to generate URL previews for media stream URLs without properly limiting connection time. Connections will only be terminated after `max_spider_size` (default: 10M) bytes have been downloaded, which can in some cases lead to long-lived connections towards the streaming media server (for instance, Icecast). This can cause excessive traffic and connections toward such servers if their stream URL is, for example, posted to a large room with many Synapse instances with URL preview enabled. Version 1.52.0 implements a timeout mechanism which will terminate URL preview connections after 30 seconds. Since generating URL previews for media streams is not supported and always fails, 1.53.0 additionally implements an allow list for content types for which Synapse will even attempt to generate a URL preview. Upgrade to 1.53.0 to fully resolve the issue. As a workaround, turn off URL preview functionality by setting `url_preview_enabled: false` in the Synapse configuration file."
}
]
},
"impact": {
"cvss": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "LOW",
"baseScore": 6.5,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "LOW",
"integrityImpact": "NONE",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L",
"version": "3.1"
}
},
"problemtype": {
"problemtype_data": [
{
"description": [
{
"lang": "eng",
"value": "CWE-400: Uncontrolled Resource Consumption"
}
]
}
]
},
"references": {
"reference_data": [
{
"name": "https://github.com/matrix-org/synapse/security/advisories/GHSA-4822-jvwx-w47h",
"refsource": "CONFIRM",
"url": "https://github.com/matrix-org/synapse/security/advisories/GHSA-4822-jvwx-w47h"
},
{
"name": "https://github.com/matrix-org/synapse/pull/11784",
"refsource": "MISC",
"url": "https://github.com/matrix-org/synapse/pull/11784"
},
{
"name": "https://github.com/matrix-org/synapse/pull/11936",
"refsource": "MISC",
"url": "https://github.com/matrix-org/synapse/pull/11936"
},
{
"name": "https://github.com/matrix-org/synapse/releases/tag/v1.52.0",
"refsource": "MISC",
"url": "https://github.com/matrix-org/synapse/releases/tag/v1.52.0"
},
{
"name": "https://github.com/matrix-org/synapse/releases/tag/v1.53.0",
"refsource": "MISC",
"url": "https://github.com/matrix-org/synapse/releases/tag/v1.53.0"
}
]
},
"source": {
"advisory": "GHSA-4822-jvwx-w47h",
"discovery": "UNKNOWN"
}
},
"gitlab.com": {
"advisories": [
{
"affected_range": "\u003c1.53.0",
"affected_versions": "All versions before 1.53.0",
"cvss_v3": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L",
"cwe_ids": [
"CWE-1035",
"CWE-772",
"CWE-937"
],
"date": "2023-07-06",
"description": "Synapse before 1.52.0 with URL preview functionality enabled will attempt to generate URL previews for media stream URLs without properly limiting connection time. Connections will only be terminated after `max_spider_size` (default: 10M) bytes have been downloaded, which can in some cases lead to long-lived connections towards the streaming media server (for instance, Icecast). This can cause excessive traffic and connections toward such servers if their stream URL is, for example, posted to a large room with many Synapse instances with URL preview enabled. Version 1.52.0 implements a timeout mechanism which will terminate URL preview connections after 30 seconds. Since generating URL previews for media streams is not supported and always fails, 1.53.0 additionally implements an allow list for content types for which Synapse will even attempt to generate a URL preview. Upgrade to 1.53.0 to fully resolve the issue. As a workaround, turn off URL preview functionality by setting `url_preview_enabled: false` in the Synapse configuration file.",
"fixed_versions": [
"1.53.0"
],
"identifier": "CVE-2022-41952",
"identifiers": [
"CVE-2022-41952",
"GHSA-4822-jvwx-w47h"
],
"not_impacted": "All versions starting from 1.53.0",
"package_slug": "pypi/matrix-synapse",
"pubdate": "2022-11-22",
"solution": "Upgrade to version 1.53.0 or above.",
"title": "Uncontrolled Resource Consumption",
"urls": [
"https://nvd.nist.gov/vuln/detail/CVE-2022-41952",
"https://github.com/matrix-org/synapse/security/advisories/GHSA-4822-jvwx-w47h",
"https://github.com/matrix-org/synapse/pull/11936",
"https://github.com/matrix-org/synapse/releases/tag/v1.53.0",
"https://github.com/matrix-org/synapse/releases/tag/v1.52.0",
"https://github.com/matrix-org/synapse/pull/11784"
],
"uuid": "3636cf22-bf7a-4281-ad6b-9b5dbd5eb2ec"
}
]
},
"nvd.nist.gov": {
"configurations": {
"CVE_data_version": "4.0",
"nodes": [
{
"children": [],
"cpe_match": [
{
"cpe23Uri": "cpe:2.3:a:matrix:synapse:*:*:*:*:*:*:*:*",
"cpe_name": [],
"versionEndExcluding": "1.53.0",
"vulnerable": true
}
],
"operator": "OR"
}
]
},
"cve": {
"CVE_data_meta": {
"ASSIGNER": "security-advisories@github.com",
"ID": "CVE-2022-41952"
},
"data_format": "MITRE",
"data_type": "CVE",
"data_version": "4.0",
"description": {
"description_data": [
{
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"value": "Synapse before 1.52.0 with URL preview functionality enabled will attempt to generate URL previews for media stream URLs without properly limiting connection time. Connections will only be terminated after `max_spider_size` (default: 10M) bytes have been downloaded, which can in some cases lead to long-lived connections towards the streaming media server (for instance, Icecast). This can cause excessive traffic and connections toward such servers if their stream URL is, for example, posted to a large room with many Synapse instances with URL preview enabled. Version 1.52.0 implements a timeout mechanism which will terminate URL preview connections after 30 seconds. Since generating URL previews for media streams is not supported and always fails, 1.53.0 additionally implements an allow list for content types for which Synapse will even attempt to generate a URL preview. Upgrade to 1.53.0 to fully resolve the issue. As a workaround, turn off URL preview functionality by setting `url_preview_enabled: false` in the Synapse configuration file."
}
]
},
"problemtype": {
"problemtype_data": [
{
"description": [
{
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"value": "CWE-772"
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"references": {
"reference_data": [
{
"name": "https://github.com/matrix-org/synapse/security/advisories/GHSA-4822-jvwx-w47h",
"refsource": "CONFIRM",
"tags": [
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],
"url": "https://github.com/matrix-org/synapse/security/advisories/GHSA-4822-jvwx-w47h"
},
{
"name": "https://github.com/matrix-org/synapse/pull/11936",
"refsource": "MISC",
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],
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},
{
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],
"url": "https://github.com/matrix-org/synapse/releases/tag/v1.53.0"
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},
{
"name": "https://github.com/matrix-org/synapse/pull/11784",
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},
"impact": {
"baseMetricV3": {
"cvssV3": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "LOW",
"baseScore": 5.3,
"baseSeverity": "MEDIUM",
"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:L",
"version": "3.1"
},
"exploitabilityScore": 3.9,
"impactScore": 1.4
}
},
"lastModifiedDate": "2023-07-06T13:37Z",
"publishedDate": "2022-11-22T16:15Z"
}
}
}
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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.
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- 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.