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    CVE-2019-11921

    An out of bounds write is possible via a specially crafted packet in certain configurations of Proxygen due to improper handling of Base64 when parsing malformed binary content in Structured HTTP Headers. This issue affects versions of proxygen prior to v2019.07.22.00.

    Published:Jul 25, 2019
    Last Modified:Nov 21, 2024
    EPS:Jul 25, 2019
    EPSS Score:0.00653
    CVSS Score:9.8

    Affected Products

    Vendor
    Facebook
    Product
    Proxygen

    Exploits

    No exploit reference

    Common Weakness Enumeration

    CWE-787 Out-of-bounds Write

    Common Attack Pattern Enumeration and Classification (CAPEC)

    No CAPEC recorded yet

    Related CVEs

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    CVE-2025-55181 (CVSS 5.3) — Sending an HTTP request/response body with greater than 2^31 bytes triggers an infinite loop in proxygen::coro…
    CVE-2023-44487 (CVSS 7.5) — The HTTP/2 protocol allows a denial of service (server resource consumption) because request cancellation can …
    CVE-2021-24029 (CVSS 7.5) — A packet of death scenario is possible in mvfst via a specially crafted message during a QUIC session, which c…
    CVE-2020-1897 (CVSS 9.8) — A use-after-free is possible due to an error in lifetime management in the request adaptor when a malicious cl…
    CVE-2019-11940 (CVSS 9.8) — In the course of decompressing HPACK inside the HTTP2 protocol, an unexpected sequence of header table resize …
    CVE-2018-6343 (CVSS 7.5) — Proxygen fails to validate that a secondary auth manager is set before dereferencing it. That can cause a deni…

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High