CVE-2019-9518

    Dashboard / Vulnerabilities / CVE-2019-9518

    CVE-2019-9518

    Published: 13 Aug 2019Last Modified: 8 Jul 2026

    Summary:

    Details: Some HTTP/2 implementations are vulnerable to a flood of empty frames, potentially leading to a denial of service. The attacker sends a stream of frames with an empty payload and without the end-of-stream flag. These frames can be DATA, HEADERS, CONTINUATION and/or PUSH_PROMISE. The peer spends time processing each frame disproportionate to attack bandwidth. This can consume excess CPU.

    References: https://lists.apache.org/thread.html/091b518265bce56a16af87b77c8cfacda902a02079e866f9fdf13b61%40%3Cusers.trafficserver.apache.org%3E, https://lists.apache.org/thread.html/2653c56545573b528f3f6352a29eccaf498bd6fb2a6a59568d81a61d%40%3Cannounce.trafficserver.apache.org%3E, https://lists.apache.org/thread.html/9317fd092b257a0815434b116a8af8daea6e920b6673f4fd5583d5fe%40%3Ccommits.druid.apache.org%3E, https://lists.apache.org/thread.html/ff5b0821a6985159a832ff6d1a4bd311ac07ecc7db1e2d8bab619107%40%3Cdev.trafficserver.apache.org%3E, https://lists.apache.org/thread.html/r99a625fb17032646d96cd23dec49603ff630e9318e44a686d63046bc%40%3Ccommits.cassandra.apache.org%3E, https://lists.apache.org/thread.html/rd31230d01fa6aad18bdadc0720acd1747e53690bd35f73a48e7a9b75%40%3Ccommits.cassandra.apache.org%3E, https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/4ZQGHE3WTYLYAYJEIDJVF2FIGQTAYPMC/, https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/CMNFX5MNYRWWIMO4BTKYQCGUDMHO3AXP/, https://support.f5.com/csp/article/K46011592?utm_source=f5support&amp%3Butm_medium=RSS, http://lists.opensuse.org/opensuse-security-announce/2019-09/msg00031.html, http://lists.opensuse.org/opensuse-security-announce/2019-09/msg00032.html, http://seclists.org/fulldisclosure/2019/Aug/16, https://access.redhat.com/errata/RHSA-2019:2925, https://access.redhat.com/errata/RHSA-2019:2939, https://access.redhat.com/errata/RHSA-2019:2955, https://access.redhat.com/errata/RHSA-2019:3892, https://access.redhat.com/errata/RHSA-2019:4352, https://access.redhat.com/errata/RHSA-2020:0727, https://github.com/Netflix/security-bulletins/blob/master/advisories/third-party/2019-002.md, https://kb.cert.org/vuls/id/605641/, https://kc.mcafee.com/corporate/index?page=content&id=SB10296, https://seclists.org/bugtraq/2019/Aug/24, https://seclists.org/bugtraq/2019/Sep/18, https://security.netapp.com/advisory/ntap-20190823-0005/, https://support.f5.com/csp/article/K46011592, https://www.debian.org/security/2019/dsa-4520, https://www.synology.com/security/advisory/Synology_SA_19_33

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: GIT

    Events:

    Introduced- 27f8e2cda9133864e6ffae0224c799fde5f10290
    Fixed -None

    Affected versions

    8.0.3-rc0
    8.0.3
    8.0.2-rc0
    8.0.2
    8.0.1-rc0
    8.0.1
    8.0.0-rc4
    8.0.0

    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