RUSTSEC-2024-0003

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    RUSTSEC-2024-0003

    Published: 17 Jan 2024Last Modified: 4 Feb 2026
    Aliases:
    CVE-2019-9514

    Summary: Resource exhaustion vulnerability in h2 may lead to Denial of Service (DoS)

    Details: An attacker with an HTTP/2 connection to an affected endpoint can send a steady stream of invalid frames to force the generation of reset frames on the victim endpoint. By closing their recv window, the attacker could then force these resets to be queued in an unbounded fashion, resulting in Out Of Memory (OOM) and high CPU usage. This fix is corrected in [hyperium/h2#737](https://github.com/hyperium/h2/pull/737), which limits the total number of internal error resets emitted by default before the connection is closed.

    References: https://crates.io/crates/h2, https://rustsec.org/advisories/RUSTSEC-2024-0003.html, https://github.com/Netflix/security-bulletins/blob/master/advisories/third-party/2019-002.md

    Affected packages

    Package

    Name: h2

    Purl: pkg:cargo/h2

    Affected ranges

    Type: SEMVER

    Events:

    Introduced- 0.0.0-0
    Fixed -0.3.24

    Affected versions

    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
    RUSTSEC-2024-0003 | CVE-DB