UBUNTU-CVE-2023-44487

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    UBUNTU-CVE-2023-44487

    Published: 10 Oct 2023Last Modified: 22 Apr 2026
    Upstream:
    CVE-2023-44487
    Aliases:
    USN-6427-1
    USN-6427-2
    USN-6438-1

    Summary:

    Details: The HTTP/2 protocol allows a denial of service (server resource consumption) because request cancellation can reset many streams quickly, as exploited in the wild in August through October 2023.

    References: https://ubuntu.com/security/CVE-2023-44487, https://blog.cloudflare.com/zero-day-rapid-reset-http2-record-breaking-ddos-attack/, https://blog.cloudflare.com/technical-breakdown-http2-rapid-reset-ddos-attack/, https://www.mail-archive.com/[email protected]/msg44134.html, https://www.nginx.com/blog/http-2-rapid-reset-attack-impacting-f5-nginx-products/, https://my.f5.com/manage/s/article/K000137106, https://mailman.nginx.org/pipermail/nginx-devel/2023-October/S36Q5HBXR7CAIMPLLPRSSSYR4PCMWILK.html, https://www.mail-archive.com/[email protected]/msg44134.html, https://devblogs.microsoft.com/dotnet/october-2023-updates/, https://ubuntu.com/security/notices/USN-6427-1, https://github.com/nghttp2/nghttp2/releases/tag/v1.57.0, https://groups.google.com/g/golang-announce/c/iNNxDTCjZvo, https://ubuntu.com/security/notices/USN-6427-2, https://ubuntu.com/security/notices/USN-6438-1, https://nodejs.org/en/blog/vulnerability/october-2023-security-releases, https://ubuntu.com/security/notices/USN-6505-1, https://ubuntu.com/security/notices/USN-6574-1, https://www.cve.org/CVERecord?id=CVE-2023-44487, https://ubuntu.com/security/notices/USN-6754-1, https://www.cisa.gov/known-exploited-vulnerabilities-catalog, https://ubuntu.com/security/notices/USN-6994-1, https://ubuntu.com/security/notices/USN-7067-1, https://ubuntu.com/security/notices/USN-7410-1, https://tomcat.apache.org/security-8.html, https://lists.apache.org/thread/5py8h42mxfsn8l1wy6o41xwhsjlsd87q, https://ubuntu.com/security/notices/USN-7469-1, https://ubuntu.com/security/notices/USN-7469-2, https://ubuntu.com/security/notices/USN-7469-3, https://ubuntu.com/security/notices/USN-7469-4, https://blog.powerdns.com/2024/02/16/powerdns-dnsdist-1.9.0-released, https://mailman.powerdns.com/pipermail/dnsdist/2023-October/001409.html, https://ubuntu.com/security/notices/USN-7892-1

    Affected packages

    Package

    Name: nghttp2

    Purl: pkg:deb/ubuntu/[email protected]~esm2?arch=source&distro=esm-apps/xenial

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -1.7.1-1ubuntu0.1~esm2

    Affected versions

    0.6.7-1

    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
    UBUNTU-CVE-2023-44487 | CVE-DB