DEBIAN-CVE-2019-9515

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    DEBIAN-CVE-2019-9515

    Published: 13 Aug 2019Last Modified: 10 Sept 2026
    Upstream:
    CVE-2019-9515

    Summary:

    Details: Some HTTP/2 implementations are vulnerable to a settings flood, potentially leading to a denial of service. The attacker sends a stream of SETTINGS frames to the peer. Since the RFC requires that the peer reply with one acknowledgement per SETTINGS frame, an empty SETTINGS frame is almost equivalent in behavior to a ping. Depending on how efficiently this data is queued, this can consume excess CPU, memory, or both.

    References: https://security-tracker.debian.org/tracker/CVE-2019-9515

    Affected packages

    Package

    Name: h2o

    Purl: pkg:deb/debian/h2o?arch=source&distro=bookworm

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -2.2.5+dfsg2-3

    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
    DEBIAN-CVE-2019-9515 | CVE-DB