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Sicherheitslücken in libvirt

In den letzten 30 Tagen veröffentlichte Sicherheitslücken für libvirt: 0. Davon im KEV-Katalog: 0.

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Sicherheitslücken: 11

  1. CVE-2024-2494

    Mittel · CVSS 6.2EPSS 0,37%Korrektur verfügbar

    Libvirt: negative g_new0 length can lead to unbounded memory allocation

    A flaw was found in the RPC library APIs of libvirt. The RPC server deserialization code allocates memory for arrays before the non-negative length check is performed by the C API entry points. Passing a negative length to the g_new0 function results in a crash due to the negative length being treated as a huge positive number. This flaw allows a local, unprivileged user to perform a denial of service attack by causing the libvirt daemon to crash.

    libvirtBetriebssysteme
    • Auf 6.0.0-0ubuntu8.19 aktualisieren
    Veröffentlicht Aktualisiert
    Originalmeldung 1 ↗Originalmeldung 2 ↗Originalmeldung 3 ↗

  2. CVE-2024-2496

    Mittel · CVSS 5EPSS 0,25%Korrektur verfügbar

    Libvirt: null pointer dereference in udevconnectlistallinterfaces()

    A NULL pointer dereference flaw was found in the udevConnectListAllInterfaces() function in libvirt. This issue can occur when detaching a host interface while at the same time collecting the list of interfaces via virConnectListAllInterfaces API. This flaw could be used to perform a denial of service attack by causing the libvirt daemon to crash.

    libvirtBetriebssysteme
    • Auf 6.0.0-0ubuntu8.19 aktualisieren
    Veröffentlicht Aktualisiert
    Originalmeldung 1 ↗Originalmeldung 2 ↗Originalmeldung 3 ↗

  3. CVE-2024-1441

    Mittel · CVSS 5.5EPSS 0,4%Korrektur verfügbar

    Libvirt: off-by-one error in udevlistinterfacesbystatus()

    An off-by-one error flaw was found in the udevListInterfacesByStatus() function in libvirt when the number of interfaces exceeds the size of the `names` array. This issue can be reproduced by sending specially crafted data to the libvirt daemon, allowing an unprivileged client to perform a denial of service attack by causing the libvirt daemon to crash.

    libvirtBetriebssysteme
    • Auf 6.0.0-0ubuntu8.19 aktualisieren
    Veröffentlicht Aktualisiert
    Originalmeldung 1 ↗Originalmeldung 2 ↗Originalmeldung 3 ↗

  4. CVE-2021-3975

    Mittel · CVSS 6.5EPSS 1,64%Korrektur verfügbar

    CVE-2021-3975

    A use-after-free flaw was found in libvirt. The qemuMonitorUnregister() function in qemuProcessHandleMonitorEOF is called using multiple threads without being adequately protected by a monitor lock. This flaw could be triggered by the virConnectGetAllDomainStats API when the guest is shutting down. An unprivileged client with a read-only connection could use this flaw to perform a denial of service attack by causing the libvirt daemon to crash.

    libvirtBetriebssysteme
    • Auf 6.0.0-0ubuntu8.16 aktualisieren
    Veröffentlicht Aktualisiert
    Originalmeldung 1 ↗Originalmeldung 2 ↗Originalmeldung 3 ↗

  5. CVE-2022-0897

    Mittel · CVSS 4.3EPSS 1,05%Korrektur verfügbar

    CVE-2022-0897

    A flaw was found in the libvirt nwfilter driver. The virNWFilterObjListNumOfNWFilters method failed to acquire the driver->nwfilters mutex before iterating over virNWFilterObj instances. There was no protection to stop another thread from concurrently modifying the driver->nwfilters object. This flaw allows a malicious, unprivileged user to exploit this issue via libvirt's API virConnectNumOfNWFilters to crash the network filter management daemon (libvirtd/virtnwfilterd).

    libvirtBetriebssysteme
    • Auf 6.0.0-0ubuntu8.16 aktualisieren
    Veröffentlicht Aktualisiert
    Originalmeldung 1 ↗Originalmeldung 2 ↗Originalmeldung 3 ↗

  7. CVE-2021-3667

    Mittel · CVSS 6.5EPSS 1,37%Korrektur verfügbar

    CVE-2021-3667

    An improper locking issue was found in the virStoragePoolLookupByTargetPath API of libvirt. It occurs in the storagePoolLookupByTargetPath function where a locked virStoragePoolObj object is not properly released on ACL permission failure. Clients connecting to the read-write socket with limited ACL permissions could use this flaw to acquire the lock and prevent other users from accessing storage pool/volume APIs, resulting in a denial of service condition. The highest threat from this vulnerability is to system availability.

    libvirtBetriebssysteme
    • Auf 6.0.0-0ubuntu8.16 aktualisieren
    Veröffentlicht Aktualisiert
    Originalmeldung 1 ↗Originalmeldung 2 ↗Originalmeldung 3 ↗

  8. CVE-2021-3631

    Mittel · CVSS 6.3EPSS 0,49%Korrektur verfügbar

    CVE-2021-3631

    A flaw was found in libvirt while it generates SELinux MCS category pairs for VMs' dynamic labels. This flaw allows one exploited guest to access files labeled for another guest, resulting in the breaking out of sVirt confinement. The highest threat from this vulnerability is to confidentiality and integrity.

    libvirtBetriebssysteme
    • Auf 6.0.0-0ubuntu8.16 aktualisieren
    Veröffentlicht Aktualisiert
    Originalmeldung 1 ↗Originalmeldung 2 ↗Originalmeldung 3 ↗

  9. CVE-2020-15708

    Kritisch · CVSS 9.3EPSS 0,4%Korrektur verfügbar

    Libvirt Service Arbitrary File Write Privilege Escalation Vulnerability

    Ubuntu's packaging of libvirt in 20.04 LTS created a control socket with world read and write permissions. An attacker could use this to overwrite arbitrary files or execute arbitrary code.

    libvirtBetriebssysteme
    • Auf 6.0.0-0ubuntu8.3 aktualisieren
    Veröffentlicht Aktualisiert
    Originalmeldung 1 ↗Originalmeldung 2 ↗

  10. CVE-2020-25637

    Mittel · CVSS 6.7EPSS 0,53%Korrektur verfügbar

    CVE-2020-25637

    A double free memory issue was found to occur in the libvirt API, in versions before 6.8.0, responsible for requesting information about network interfaces of a running QEMU domain. This flaw affects the polkit access control driver. Specifically, clients connecting to the read-write socket with limited ACL permissions could use this flaw to crash the libvirt daemon, resulting in a denial of service, or potentially escalate their privileges on the system. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.

    libvirtBetriebssysteme
    • Auf 6.0.0-0ubuntu8.16 aktualisieren
    Veröffentlicht Aktualisiert
    Originalmeldung 1 ↗Originalmeldung 2 ↗Originalmeldung 3 ↗

  11. CVE-2020-12430

    Mittel · CVSS 6.5EPSS 2,27%Korrektur verfügbar

    CVE-2020-12430

    An issue was discovered in qemuDomainGetStatsIOThread in qemu/qemu_driver.c in libvirt 4.10.0 though 6.x before 6.1.0. A memory leak was found in the virDomainListGetStats libvirt API that is responsible for retrieving domain statistics when managing QEMU guests. This flaw allows unprivileged users with a read-only connection to cause a memory leak in the domstats command, resulting in a potential denial of service.

    libvirtBetriebssysteme
    • Auf 6.0.0-0ubuntu6 aktualisieren
    Veröffentlicht Aktualisiert
    Originalmeldung 1 ↗Originalmeldung 2 ↗Originalmeldung 3 ↗

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