Mageia 2019-0291: nghttp2 security update

    Date27 Sep 2019
    CategoryMageia
    1262
    Posted ByLinuxSecurity Advisories
    The updated packages fix security vulnerabilities: Some HTTP/2 implementations are vulnerable to window size manipulation and stream prioritization manipulation, potentially leading to a denial of service. The attacker requests a large amount of data from a specified
    MGASA-2019-0291 - Updated nghttp2 packages fix security vulnerabilities
    
    Publication date: 28 Sep 2019
    URL: https://advisories.mageia.org/MGASA-2019-0291.html
    Type: security
    Affected Mageia releases: 6, 7
    CVE: CVE-2019-9511,
         CVE-2019-9513
    
    The updated packages fix security vulnerabilities:
    
    Some HTTP/2 implementations are vulnerable to window size manipulation
    and stream prioritization manipulation, potentially leading to a denial
    of service. The attacker requests a large amount of data from a specified
    resource over multiple streams. They manipulate window size and stream
    priority to force the server to queue the data in 1-byte chunks. Depending
    on how efficiently this data is queued, this can consume excess CPU,
    memory, or both. (CVE-2019-9511)
    
    Some HTTP/2 implementations are vulnerable to resource loops, potentially
    leading to a denial of service. The attacker creates multiple request
    streams and continually shuffles the priority of the streams in a way that
    causes substantial churn to the priority tree. This can consume excess CPU.
    (CVE-2019-9513)
    
    References:
    - https://bugs.mageia.org/show_bug.cgi?id=25424
    - https://access.redhat.com/errata/RHSA-2019:2692
    - https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-9511
    - https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-9513
    
    SRPMS:
    - 7/core/nghttp2-1.38.0-1.1.mga7
    - 6/core/nghttp2-1.9.2-1.1.mga6
    

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