{"answers":{"affected":"3 open source packages ship an affected version, including matrix-synapse. It affects 1 product.","exploited":"There is no known exploitation of CVE-2022-39374 in the wild and no public exploit code.","fix":"Upgrade matrix-synapse to a fixed version for your release line: 1.68.0 or 1.68.0rc1.","what":"CVE-2022-39374 is a medium-severity denial of service vulnerability in matrix-org synapse, published on 26 May 2023. Any signed-in user can exploit it over the network, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2022-39374 and fix it if it is affected.\n\nWhat it is: CVE-2022-39374 is a medium-severity denial of service vulnerability in matrix-org synapse, published on 26 May 2023. Any signed-in user can exploit it over the network, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2022-39374 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- matrix-synapse (PyPI): affected from 1.62.0; fixed in 1.68.0\n- matrix-synapse (PyPI): affected from 1.62.0; fixed in 1.68.0rc1\n- matrix-synapse (PyPI): affected from 1.62.0; fixed in 1.68.0rc1\n\nTask:\n1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.\n2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.\n3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.\n4. Run the tests and summarise what changed and why.\n5. If nothing in the project is affected, say so and change nothing.\n\nReference: https://insights.sbomify.com/CVE-2022-39374/ (Markdown: https://insights.sbomify.com/CVE-2022-39374/index.md)","id":"CVE-2022-39374","markdown":"https://insights.sbomify.com/CVE-2022-39374/index.md","name":"CVE-2022-39374","record":{"aliases":["GHSA-p9qp-c452-f9r7","PYSEC-2023-66","UBUNTU-CVE-2022-39374"],"analysis":{"component_type":"server_software","fix_type":"upgrade","impacts":["denial_of_service"],"network_reachable":"yes","non_default_config":false,"product_category":"Matrix homeserver","requires_auth":"low_privilege","summary":"A malicious homeserver can cause a Synapse Matrix homeserver to reject all future messages in a shared room, resulting in a denial of service.","user_interaction":"not_required","vuln_class":"denial_of_service"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"GitHub_M","cpe":[{"product":"synapse","vendor":"matrix"}],"cvss":{"score":6.5,"severity":"medium","source":"cna","vector":"CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","version":"3.0"},"cwes":[{"id":"CWE-400","name":"Uncontrolled Resource Consumption"}],"description":"Synapse is an open-source Matrix homeserver written and maintained by the Matrix.org Foundation. If Synapse and a malicious homeserver are both joined to the same room, the malicious homeserver can trick Synapse into accepting previously rejected events into its view of the current state of that room. This can be exploited in a way that causes all further messages and state changes sent in that room from the vulnerable homeserver to be rejected. This issue has been patched in version 1.68.0","ecosystems":["PyPI"],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"none_known"},"has_fix":true,"headline":"Synapse Denial of service due to incorrect application of event authorization rules during state resolution","id":"CVE-2022-39374","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"PyPI","product":null,"products":[],"type":"denial_of_service","year":"2022"},"n_packages":3,"n_references":3,"next":{"headline":"Cross-Site Scripting (XSS) through public RSS feed in GLPI","id":"CVE-2022-39375"},"packages":[{"ecosystem":"PyPI","fixed":["1.68.0"],"introduced":["1.62.0"],"last_affected":[],"package":"matrix-synapse","purl":"pkg:pypi/matrix-synapse","source":"PYSEC-2023-66"},{"ecosystem":"PyPI","fixed":["1.68.0rc1"],"introduced":["1.62.0"],"last_affected":[],"package":"matrix-synapse","purl":null,"source":"GHSA-p9qp-c452-f9r7"},{"ecosystem":"PyPI","fixed":["1.68.0rc1"],"introduced":["1.62.0"],"last_affected":[],"package":"matrix-synapse","purl":"pkg:pypi/matrix-synapse","source":"GHSA-p9qp-c452-f9r7"}],"prev":{"headline":"Stored Cross-Site Scripting (XSS) in entity name in GLPI","id":"CVE-2022-39373"},"products":["synapse"],"published":"2023-05-26","related":[{"cvss_score":9.8,"headline":"Improper Verification of Cryptographic Signature in matrix-synapse","id":"CVE-2019-18835","kev_date_added":null,"published":"2019-11-07"},{"cvss_score":8.7,"headline":"Synapse allows a a malformed invite to break the invitee's `/sync`","id":"CVE-2024-52815","kev_date_added":null,"published":"2024-12-03"},{"cvss_score":8.2,"headline":"Synapse allows unsupported content types to lead to memory exhaustion","id":"CVE-2024-52805","kev_date_added":null,"published":"2024-12-03"},{"cvss_score":8.2,"headline":"Synapse can be forced to thumbnail unexpected file formats, invoking external, potentially untrustworthy decoders","id":"CVE-2024-53863","kev_date_added":null,"published":"2024-12-03"},{"cvss_score":7.5,"headline":"Synapse denial of service through media disk space consumption","id":"CVE-2024-37302","kev_date_added":null,"published":"2024-12-03"},{"cvss_score":7.5,"headline":"Matrix Synapse Authorization Error","id":"CVE-2018-12423","kev_date_added":null,"published":"2018-06-14"},{"cvss_score":7.5,"headline":"Matrix Synapse Security Filtering Flaw","id":"CVE-2018-12291","kev_date_added":null,"published":"2018-06-13"}],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"CC BY 4.0","name":"GitHub Advisory Database","prefix":"GHSA"},{"class":"attribution","licence":"CC BY 4.0","name":"PyPA Advisory Database","prefix":"PYSEC"},{"class":"attribution","licence":"US public information, NVD API terms","name":"NVD"},{"class":"attribution","licence":"CWE Terms of Use","name":"CWE (MITRE)"},{"class":"attribution","licence":"FIRST CVSS licence","name":"CVSS (FIRST)"}],"ssvc":{"automatable":"no","exploitation":"none","technical_impact":"partial"},"state":"PUBLISHED","updated":"2025-02-13","vendors":["matrix-org"]},"summary":"A malicious homeserver can cause a Synapse Matrix homeserver to reject all future messages in a shared room, resulting in a denial of service.","url":"https://insights.sbomify.com/CVE-2022-39374/"}