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High DSA-4508-1 3 CVEs

h2o - security update

Published Aug 24, 2019 · Updated Mar 9, 2026

Ecosystem: Debian

Fixed packages 1

ReleasePackageFixed in
Debian · 10 h2o 2.2.5+dfsg2-2+deb10u1

Vulnerabilities 3

  • High 7.5
    CVE-2019-9512 EPSS 83%

    Some HTTP/2 implementations are vulnerable to ping floods, potentially leading to a denial of service

    Some HTTP/2 implementations are vulnerable to ping floods, potentially leading to a denial of service. The attacker sends continual pings to an HTTP/2 peer, causing the peer to build an internal queue of responses. Depending on how efficiently this data is qu…

    go stdlib golang-1.8 golang-1.10 Debian Ubuntu Azure Linux Alpine Go
  • High 7.5
    CVE-2019-9514 EPSS 83%

    Some HTTP/2 implementations are vulnerable to a reset flood, potentially leading to a denial of service

    Some HTTP/2 implementations are vulnerable to a reset flood, potentially leading to a denial of service. The attacker opens a number of streams and sends an invalid request over each stream that should solicit a stream of RST_STREAM frames from the peer. Depe…

    nodejs go golang-1.8 golang-1.10 Debian Ubuntu Azure Linux Alpine
  • High 7.5
    CVE-2019-9515 EPSS 87%

    Some HTTP/2 implementations are vulnerable to a settings flood, potentially leading to a denial of service

    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 …

    nodejs trafficserver netty trafficserver Debian Ubuntu Alpine