{"answers":{"affected":"3 open source packages ship an affected version, including matrix-sydent. It affects 1 product.","exploited":"There is no known exploitation of CVE-2021-29432 in the wild and no public exploit code.","fix":"Upgrade matrix-sydent to 2.3.0 or later.","what":"CVE-2021-29432 is a medium-severity vulnerability in matrix-org sydent, published on 15 Apr 2021. An attacker can exploit it over the internet without logging in, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2021-29432 and fix it if it is affected.\n\nWhat it is: CVE-2021-29432 is a medium-severity vulnerability in matrix-org sydent, published on 15 Apr 2021. An attacker can exploit it over the internet without logging in, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2021-29432 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- matrix-sydent (PyPI): affected all versions; fixed in 2.3.0\n- matrix-sydent (PyPI): affected all versions; fixed in 2.3.0\n- matrix-sydent (PyPI): affected all versions; fixed in 2.3.0\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-2021-29432/ (Markdown: https://insights.sbomify.com/CVE-2021-29432/index.md)","id":"CVE-2021-29432","markdown":"https://insights.sbomify.com/CVE-2021-29432/index.md","name":"CVE-2021-29432","record":{"aliases":["GHSA-mh74-4m5g-fcjx","PYSEC-2021-23"],"analysis":{"component_type":"server_software","fix_type":"patch","impacts":["other"],"network_reachable":"yes","non_default_config":false,"product_category":"Matrix identity server","requires_auth":"none","summary":"Malicious users can control invitation email content in Sydent, enabling phishing attacks via arbitrary emails sent from the server.","user_interaction":"not_required","vuln_class":"other"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"GitHub_M","cpe":[{"product":"sydent","vendor":"matrix"}],"cvss":{"score":5.3,"severity":"medium","source":"cna","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N","version":"3.1"},"cwes":[{"id":"CWE-20","name":"Improper Input Validation"}],"description":"Sydent is a reference matrix identity server. A malicious user could abuse Sydent to send out arbitrary emails from the Sydent email address. This could be used to construct plausible phishing emails, for example. This issue has been fixed in 4469d1d.","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":"Malicious users could control the content of invitation emails","id":"CVE-2021-29432","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"PyPI","product":null,"products":[],"type":"other","year":"2021"},"n_packages":3,"n_references":4,"next":{"headline":"Denial of service (via resource exhaustion) due to improper input validation","id":"CVE-2021-29433"},"packages":[{"ecosystem":"PyPI","fixed":["2.3.0"],"introduced":["0"],"last_affected":[],"package":"matrix-sydent","purl":null,"source":"GHSA-mh74-4m5g-fcjx"},{"ecosystem":"PyPI","fixed":["2.3.0"],"introduced":["0"],"last_affected":[],"package":"matrix-sydent","purl":"pkg:pypi/matrix-sydent","source":"GHSA-mh74-4m5g-fcjx"},{"ecosystem":"PyPI","fixed":["2.3.0"],"introduced":["0"],"last_affected":[],"package":"matrix-sydent","purl":"pkg:pypi/matrix-sydent","source":"PYSEC-2021-23"}],"prev":{"headline":"SSRF in Sydent due to missing validation of hostnames","id":"CVE-2021-29431"},"products":["sydent"],"published":"2021-04-15","related":[{"cvss_score":9.3,"headline":"Sydent does not verify email server certificates","id":"CVE-2023-38686","kev_date_added":null,"published":"2023-08-04"},{"cvss_score":7.7,"headline":"SSRF in Sydent due to missing validation of hostnames","id":"CVE-2021-29431","kev_date_added":null,"published":"2021-04-15"},{"cvss_score":7.5,"headline":"Denial of service attack via memory exhaustion","id":"CVE-2021-29430","kev_date_added":null,"published":"2021-04-15"},{"cvss_score":7.5,"headline":"matrix-sydent and matrix-synapse Use Cryptographically Weak PRNG","id":"CVE-2019-11842","kev_date_added":null,"published":"2019-05-09"},{"cvss_score":5.9,"headline":"Matrix Sydent mishandles emails","id":"CVE-2019-11340","kev_date_added":null,"published":"2019-04-19"},{"cvss_score":4.3,"headline":"Denial of service (via resource exhaustion) due to improper input validation","id":"CVE-2021-29433","kev_date_added":null,"published":"2021-04-15"}],"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":null,"exploitation":null,"technical_impact":null},"state":"PUBLISHED","updated":"2024-08-03","vendors":["matrix-org"]},"summary":"Malicious users can control invitation email content in Sydent, enabling phishing attacks via arbitrary emails sent from the server.","url":"https://insights.sbomify.com/CVE-2021-29432/"}