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CVE-2021-29430

CVE-2021-29430 · Denial of service attack via memory exhaustion

Esta página presenta datos de fuentes públicas de vulnerabilidades. Consulta el aviso original antes de actualizar.

Sydent is a reference Matrix identity server. Sydent does not limit the size of requests it receives from HTTP clients. A malicious user could send an HTTP request with a very large body, leading to memory exhaustion and denial of service. Sydent also does not limit response size for requests it makes to remote Matrix homeservers. A malicious homeserver could return a very large response, again leading to memory exhaustion and denial of service. This affects any server which accepts registration requests from untrusted clients. This issue has been patched by releases 89071a1, 0523511, f56eee3. As a workaround request sizes can be limited in an HTTP reverse-proxy. There are no known workarounds for the problem with overlarge responses.

CVSS 7.5 · Alta · EPSS 1,8% · Corrección disponible

Publicación
Actualización

Pila tecnológica: python

Productos y versiones afectados

  • sydent

    Versiones
    • < 2.3.0: Afectada

    Sin corrección publicada

  • matrix-sydent PyPI

    Versiones
    • 2.0.0
    • 2.0.1
    • 2.1.0
    • 2.2.0
    Intervalos de versiones afectados
    • ECOSYSTEM: < 2.3.0

    Actualiza a 2.3.0

  • matrix-sydent PyPI

    Versiones
    • 2.0.0
    • 2.0.1
    • 2.1.0
    • 2.2.0
    Intervalos de versiones afectados
    • {"events": [{"introduced": "0"}, {"fixed": "0523511d2fb40f2738f8a8549868f44b96e5dab7"}, {"fixed": "89071a1a754c69a50deac89e6bb74002d4cda19d"}, {"fixed": "f56eee315b6c44fdd9f6aa785cc2ec744a594428"}], "repo": "https://github.com/matrix-org/sydent", "type": "GIT"}
    • ECOSYSTEM: < 2.3.0

    Actualiza a 2.3.0

Fuentes originales

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