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Root-Rechte für Angreifer

Linux
  • Die Tage ging ja wieder eine Meldung durchs Netz, die einige zum Teil recht gefährliche Lücken im Kernel benannte.

    Die darin benannten CVE's wurden heute vom Debian Team gefixt.

    Package        : linux
    CVE ID         : CVE-2023-0386 CVE-2023-31436 CVE-2023-32233
    
    Several vulnerabilities have been discovered in the Linux kernel that
    may lead to a privilege escalation, denial of service or information
    leaks.
    
    CVE-2023-0386
    
        It was discovered that under certain conditions the overlayfs
        filesystem implementation did not properly handle copy up
        operations. A local user permitted to mount overlay mounts in user
        namespaces can take advantage of this flaw for local privilege
        escalation.
    
    CVE-2023-31436
    
        Gwangun Jung reported a a flaw causing heap out-of-bounds read/write
        errors in the traffic control subsystem for the Quick Fair Queueing
        scheduler (QFQ) which may result in information leak, denial of
        service or privilege escalation.
    
    CVE-2023-32233
    
        Patryk Sondej and Piotr Krysiuk discovered a use-after-free flaw in
        the Netfilter nf_tables implementation when processing batch
        requests, which may result in local privilege escalation for a user
        with the CAP_NET_ADMIN capability in any user or network namespace.
    
    For the stable distribution (bullseye), these problems have been fixed in
    version 5.10.179-1.
    
    We recommend that you upgrade your linux packages.
    

    Da kann ich mich nur der Empfehlung des Debian Teams anschließen, mal schnell die Server aktualisieren!