Medium: libvirt

Issue Overview:

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. (CVE-2024-1441)

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. (CVE-2024-2494)

NULL pointer dereference in udevConnectListAllInterfaces() (CVE-2024-2496)

Affected Packages:

libvirt

Note:

This advisory is applicable to Amazon Linux 2 (AL2) Core repository. Visit this FAQ section for the difference between AL2 Core and AL2 Extras advisories.

Issue Correction:
Run yum update libvirt to update your system.

New Packages:

aarch64:  
    libvirt-4.5.0-36.amzn2.3.1.aarch64  
    libvirt-docs-4.5.0-36.amzn2.3.1.aarch64  
    libvirt-daemon-4.5.0-36.amzn2.3.1.aarch64  
    libvirt-daemon-config-network-4.5.0-36.amzn2.3.1.aarch64  
    libvirt-daemon-config-nwfilter-4.5.0-36.amzn2.3.1.aarch64  
    libvirt-daemon-driver-network-4.5.0-36.amzn2.3.1.aarch64  
    libvirt-daemon-driver-nwfilter-4.5.0-36.amzn2.3.1.aarch64  
    libvirt-daemon-driver-nodedev-4.5.0-36.amzn2.3.1.aarch64  
    libvirt-daemon-driver-interface-4.5.0-36.amzn2.3.1.aarch64  
    libvirt-daemon-driver-secret-4.5.0-36.amzn2.3.1.aarch64  
    libvirt-daemon-driver-storage-core-4.5.0-36.amzn2.3.1.aarch64  
    libvirt-daemon-driver-storage-logical-4.5.0-36.amzn2.3.1.aarch64  
    libvirt-daemon-driver-storage-disk-4.5.0-36.amzn2.3.1.aarch64  
    libvirt-daemon-driver-storage-scsi-4.5.0-36.amzn2.3.1.aarch64  
    libvirt-daemon-driver-storage-iscsi-4.5.0-36.amzn2.3.1.aarch64  
    libvirt-daemon-driver-storage-mpath-4.5.0-36.amzn2.3.1.aarch64  
    libvirt-daemon-driver-storage-4.5.0-36.amzn2.3.1.aarch64  
    libvirt-daemon-driver-qemu-4.5.0-36.amzn2.3.1.aarch64  
    libvirt-daemon-driver-lxc-4.5.0-36.amzn2.3.1.aarch64  
    libvirt-daemon-kvm-4.5.0-36.amzn2.3.1.aarch64  
    libvirt-daemon-lxc-4.5.0-36.amzn2.3.1.aarch64  
    libvirt-client-4.5.0-36.amzn2.3.1.aarch64  
    libvirt-libs-4.5.0-36.amzn2.3.1.aarch64  
    libvirt-admin-4.5.0-36.amzn2.3.1.aarch64  
    libvirt-bash-completion-4.5.0-36.amzn2.3.1.aarch64  
    libvirt-login-shell-4.5.0-36.amzn2.3.1.aarch64  
    libvirt-devel-4.5.0-36.amzn2.3.1.aarch64  
    libvirt-lock-sanlock-4.5.0-36.amzn2.3.1.aarch64  
    libvirt-nss-4.5.0-36.amzn2.3.1.aarch64  
    libvirt-debuginfo-4.5.0-36.amzn2.3.1.aarch64  
  
i686:  
    libvirt-4.5.0-36.amzn2.3.1.i686  
    libvirt-docs-4.5.0-36.amzn2.3.1.i686  
    libvirt-daemon-4.5.0-36.amzn2.3.1.i686  
    libvirt-daemon-config-network-4.5.0-36.amzn2.3.1.i686  
    libvirt-daemon-config-nwfilter-4.5.0-36.amzn2.3.1.i686  
    libvirt-daemon-driver-network-4.5.0-36.amzn2.3.1.i686  
    libvirt-daemon-driver-nwfilter-4.5.0-36.amzn2.3.1.i686  
    libvirt-daemon-driver-nodedev-4.5.0-36.amzn2.3.1.i686  
    libvirt-daemon-driver-interface-4.5.0-36.amzn2.3.1.i686  
    libvirt-daemon-driver-secret-4.5.0-36.amzn2.3.1.i686  
    libvirt-daemon-driver-storage-core-4.5.0-36.amzn2.3.1.i686  
    libvirt-daemon-driver-storage-logical-4.5.0-36.amzn2.3.1.i686  
    libvirt-daemon-driver-storage-disk-4.5.0-36.amzn2.3.1.i686  
    libvirt-daemon-driver-storage-scsi-4.5.0-36.amzn2.3.1.i686  
    libvirt-daemon-driver-storage-iscsi-4.5.0-36.amzn2.3.1.i686  
    libvirt-daemon-driver-storage-mpath-4.5.0-36.amzn2.3.1.i686  
    libvirt-daemon-driver-storage-4.5.0-36.amzn2.3.1.i686  
    libvirt-daemon-driver-lxc-4.5.0-36.amzn2.3.1.i686  
    libvirt-daemon-lxc-4.5.0-36.amzn2.3.1.i686  
    libvirt-client-4.5.0-36.amzn2.3.1.i686  
    libvirt-libs-4.5.0-36.amzn2.3.1.i686  
    libvirt-admin-4.5.0-36.amzn2.3.1.i686  
    libvirt-bash-completion-4.5.0-36.amzn2.3.1.i686  
    libvirt-login-shell-4.5.0-36.amzn2.3.1.i686  
    libvirt-devel-4.5.0-36.amzn2.3.1.i686  
    libvirt-nss-4.5.0-36.amzn2.3.1.i686  
    libvirt-debuginfo-4.5.0-36.amzn2.3.1.i686  
  
src:  
    libvirt-4.5.0-36.amzn2.3.1.src  
  
x86_64:  
    libvirt-4.5.0-36.amzn2.3.1.x86_64  
    libvirt-docs-4.5.0-36.amzn2.3.1.x86_64  
    libvirt-daemon-4.5.0-36.amzn2.3.1.x86_64  
    libvirt-daemon-config-network-4.5.0-36.amzn2.3.1.x86_64  
    libvirt-daemon-config-nwfilter-4.5.0-36.amzn2.3.1.x86_64  
    libvirt-daemon-driver-network-4.5.0-36.amzn2.3.1.x86_64  
    libvirt-daemon-driver-nwfilter-4.5.0-36.amzn2.3.1.x86_64  
    libvirt-daemon-driver-nodedev-4.5.0-36.amzn2.3.1.x86_64  
    libvirt-daemon-driver-interface-4.5.0-36.amzn2.3.1.x86_64  
    libvirt-daemon-driver-secret-4.5.0-36.amzn2.3.1.x86_64  
    libvirt-daemon-driver-storage-core-4.5.0-36.amzn2.3.1.x86_64  
    libvirt-daemon-driver-storage-logical-4.5.0-36.amzn2.3.1.x86_64  
    libvirt-daemon-driver-storage-disk-4.5.0-36.amzn2.3.1.x86_64  
    libvirt-daemon-driver-storage-scsi-4.5.0-36.amzn2.3.1.x86_64  
    libvirt-daemon-driver-storage-iscsi-4.5.0-36.amzn2.3.1.x86_64  
    libvirt-daemon-driver-storage-mpath-4.5.0-36.amzn2.3.1.x86_64  
    libvirt-daemon-driver-storage-gluster-4.5.0-36.amzn2.3.1.x86_64  
    libvirt-daemon-driver-storage-rbd-4.5.0-36.amzn2.3.1.x86_64  
    libvirt-daemon-driver-storage-4.5.0-36.amzn2.3.1.x86_64  
    libvirt-daemon-driver-qemu-4.5.0-36.amzn2.3.1.x86_64  
    libvirt-daemon-driver-lxc-4.5.0-36.amzn2.3.1.x86_64  
    libvirt-daemon-kvm-4.5.0-36.amzn2.3.1.x86_64  
    libvirt-daemon-lxc-4.5.0-36.amzn2.3.1.x86_64  
    libvirt-client-4.5.0-36.amzn2.3.1.x86_64  
    libvirt-libs-4.5.0-36.amzn2.3.1.x86_64  
    libvirt-admin-4.5.0-36.amzn2.3.1.x86_64  
    libvirt-bash-completion-4.5.0-36.amzn2.3.1.x86_64  
    libvirt-login-shell-4.5.0-36.amzn2.3.1.x86_64  
    libvirt-devel-4.5.0-36.amzn2.3.1.x86_64  
    libvirt-lock-sanlock-4.5.0-36.amzn2.3.1.x86_64  
    libvirt-nss-4.5.0-36.amzn2.3.1.x86_64  
    libvirt-debuginfo-4.5.0-36.amzn2.3.1.x86_64  

Additional References

Red Hat: CVE-2024-1441, CVE-2024-2494, CVE-2024-2496

Mitre: CVE-2024-1441, CVE-2024-2494, CVE-2024-2496