diff --git a/advisories/github-reviewed/2024/12/GHSA-4mhg-xv73-xq2x/GHSA-4mhg-xv73-xq2x.json b/advisories/github-reviewed/2024/12/GHSA-4mhg-xv73-xq2x/GHSA-4mhg-xv73-xq2x.json new file mode 100644 index 00000000000..0a7cd73e858 --- /dev/null +++ b/advisories/github-reviewed/2024/12/GHSA-4mhg-xv73-xq2x/GHSA-4mhg-xv73-xq2x.json @@ -0,0 +1,65 @@ +{ + "schema_version": "1.4.0", + "id": "GHSA-4mhg-xv73-xq2x", + "modified": "2024-12-03T18:39:13Z", + "published": "2024-12-03T18:39:12Z", + "aliases": [ + "CVE-2024-37302" + ], + "summary": "Synapse denial of service through media disk space consumption", + "details": "### Impact\n\nSynapse versions before 1.106 are vulnerable to a disk fill attack, where an unauthenticated adversary can induce Synapse to download and cache large amounts of remote media. The default rate limit strategy is insufficient to mitigate this. This can lead to a denial of service, ranging from further media uploads/downloads failing to completely unavailability of the Synapse process, depending on how Synapse was deployed.\n\n### Patches\n\nSynapse 1.106 introduces a new \"leaky bucket\" rate limit on remote media downloads to reduce the amount of data a user can request at a time. This does not fully address the issue, but does limit an unauthenticated user's ability to request large amounts of data to be cached.\n\n### Workarounds\n\nSynapse deployments can currently decrease the maximum file size allowed, as well as increase request rate limits. However, this does not as effectively address the issue as a dedicated rate limit on remote media downloads.\n\nServer operators may also wish to consider putting media on a dedicated disk or volume, reducing the impact of a disk fill condition.\n\n### References\n\n* https://en.wikipedia.org/wiki/Leaky_bucket#As_a_meter\n\n### For more information\n\nIf you have any questions or comments about this advisory, please email us at [security at element.io](mailto:security@element.io).", + "severity": [ + { + "type": "CVSS_V3", + "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H" + }, + { + "type": "CVSS_V4", + "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N" + } + ], + "affected": [ + { + "package": { + "ecosystem": "PyPI", + "name": "matrix-synapse" + }, + "ranges": [ + { + "type": "ECOSYSTEM", + "events": [ + { + "introduced": "0" + }, + { + "fixed": "1.106" + } + ] + } + ] + } + ], + "references": [ + { + "type": "WEB", + "url": "https://github.com/element-hq/synapse/security/advisories/GHSA-4mhg-xv73-xq2x" + }, + { + "type": "ADVISORY", + "url": "https://nvd.nist.gov/vuln/detail/CVE-2024-37302" + }, + { + "type": "PACKAGE", + "url": "https://github.com/element-hq/synapse" + } + ], + "database_specific": { + "cwe_ids": [ + "CWE-770" + ], + "severity": "HIGH", + "github_reviewed": true, + "github_reviewed_at": "2024-12-03T18:39:12Z", + "nvd_published_at": "2024-12-03T17:15:10Z" + } +} \ No newline at end of file diff --git a/advisories/github-reviewed/2024/12/GHSA-gjgr-7834-rhxr/GHSA-gjgr-7834-rhxr.json b/advisories/github-reviewed/2024/12/GHSA-gjgr-7834-rhxr/GHSA-gjgr-7834-rhxr.json new file mode 100644 index 00000000000..8c60513dc0a --- /dev/null +++ b/advisories/github-reviewed/2024/12/GHSA-gjgr-7834-rhxr/GHSA-gjgr-7834-rhxr.json @@ -0,0 +1,69 @@ +{ + "schema_version": "1.4.0", + "id": "GHSA-gjgr-7834-rhxr", + "modified": "2024-12-03T18:40:01Z", + "published": "2024-12-03T18:40:01Z", + "aliases": [ + "CVE-2024-37303" + ], + "summary": "Synapse's unauthenticated writes to the media repository allow planting of problematic content", + "details": "### Impact\n\nSynapse before version 1.106 allows, by design, unauthenticated remote participants to trigger a download and caching of remote media from a remote homeserver to the local media repository. Such content then also becomes available for download from the local homeserver in an unauthenticated way. The implication is that unauthenticated remote adversaries can use this functionality to plant problematic content into the media repository.\n\n### Patches\n\nSynapse 1.106 introduces a partial mitigation in the form of new endpoints which require authentication for media downloads. The unauthenticated endpoints will be frozen in a future release, closing the attack vector.\n\n### Workarounds\n\nThough extremely limited, server operators can use more strict rate limits based on IP address.\n\n### References\n\n* https://github.com/matrix-org/matrix-spec-proposals/pull/3916\n\n### For more information\n\nIf you have any questions or comments about this advisory, please email us at [security at element.io](mailto:security@element.io).", + "severity": [ + { + "type": "CVSS_V3", + "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L" + }, + { + "type": "CVSS_V4", + "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N" + } + ], + "affected": [ + { + "package": { + "ecosystem": "PyPI", + "name": "matrix-synapse" + }, + "ranges": [ + { + "type": "ECOSYSTEM", + "events": [ + { + "introduced": "0" + }, + { + "fixed": "1.106" + } + ] + } + ] + } + ], + "references": [ + { + "type": "WEB", + "url": "https://github.com/element-hq/synapse/security/advisories/GHSA-gjgr-7834-rhxr" + }, + { + "type": "ADVISORY", + "url": "https://nvd.nist.gov/vuln/detail/CVE-2024-37303" + }, + { + "type": "WEB", + "url": "https://github.com/matrix-org/matrix-spec-proposals/pull/3916" + }, + { + "type": "PACKAGE", + "url": "https://github.com/element-hq/synapse" + } + ], + "database_specific": { + "cwe_ids": [ + "CWE-306" + ], + "severity": "MODERATE", + "github_reviewed": true, + "github_reviewed_at": "2024-12-03T18:40:01Z", + "nvd_published_at": "2024-12-03T17:15:10Z" + } +} \ No newline at end of file