CVSS: 7.5EPSS: 0%CPEs: 9EXPL: 0CVE-2023-3354 – Improper i/o watch removal in tls handshake can lead to remote unauthenticated denial of service
https://notcve.org/view.php?id=CVE-2023-3354
A flaw was found in the QEMU built-in VNC server. When a client connects to the VNC server, QEMU checks whether the current number of connections crosses a certain threshold and if so, cleans up the previous connection. If the previous connection happens to be in the handshake phase and fails, QEMU cleans up the connection again, resulting in a NULL pointer dereference issue. This could allow a remote unauthenticated client to cause a denial of service. • https://access.redhat.com/security/cve/CVE-2023-3354 https://bugzilla.redhat.com/show_bug.cgi?id=2216478 https://lists.debian.org/debian-lts-announce/2024/03/msg00012.html https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/MURWGXDIF2WTDXV36T6HFJDBL632AO7R • CWE-476: NULL Pointer Dereference •
CVSS: 7.8EPSS: 0%CPEs: 6EXPL: 0CVE-2023-0664
https://notcve.org/view.php?id=CVE-2023-0664
A flaw was found in the QEMU Guest Agent service for Windows. A local unprivileged user may be able to manipulate the QEMU Guest Agent's Windows installer via repair custom actions to elevate their privileges on the system. • https://bugzilla.redhat.com/show_bug.cgi?id=2167423 https://gitlab.com/qemu-project/qemu/-/commit/07ce178a2b0768eb9e712bb5ad0cf6dc7fcf0158 https://gitlab.com/qemu-project/qemu/-/commit/88288c2a51faa7c795f053fc8b31b1c16ff804c5 https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/MURWGXDIF2WTDXV36T6HFJDBL632AO7R https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/SEOC7SRJWLZSXCND2ADFW6C76ZMTZLE4 https://lists.nongnu.org/archive/html/qemu-devel/2023-03/msg01445 • CWE-250: Execution with Unnecessary Privileges CWE-269: Improper Privilege Management •
CVSS: 6.3EPSS: 0%CPEs: 2EXPL: 0CVE-2023-1544 – Qemu: pvrdma: out-of-bounds read in pvrdma_ring_next_elem_read()
https://notcve.org/view.php?id=CVE-2023-1544
A flaw was found in the QEMU implementation of VMWare's paravirtual RDMA device. This flaw allows a crafted guest driver to allocate and initialize a huge number of page tables to be used as a ring of descriptors for CQ and async events, potentially leading to an out-of-bounds read and crash of QEMU. • https://access.redhat.com/security/cve/CVE-2023-1544 https://bugzilla.redhat.com/show_bug.cgi?id=2180364 https://lists.nongnu.org/archive/html/qemu-devel/2023-03/msg00206.html https://security.netapp.com/advisory/ntap-20230511-0005 • CWE-125: Out-of-bounds Read CWE-770: Allocation of Resources Without Limits or Throttling •
CVSS: 6.5EPSS: 0%CPEs: 2EXPL: 1CVE-2022-4172 – QEMU: ACPI ERST: memory corruption issues in read_erst_record and write_erst_record
https://notcve.org/view.php?id=CVE-2022-4172
An integer overflow and buffer overflow issues were found in the ACPI Error Record Serialization Table (ERST) device of QEMU in the read_erst_record() and write_erst_record() functions. Both issues may allow the guest to overrun the host buffer allocated for the ERST memory device. A malicious guest could use these flaws to crash the QEMU process on the host. Se encontraron problemas de desbordamiento de enteros y desbordamiento de búfer en el dispositivo ACPI Error Record Serialization Table (ERST) de QEMU en las funciones read_erst_record() y write_erst_record(). Ambos problemas pueden permitir que el huésped sobrecargue el búfer del host asignado para el dispositivo de memoria ERST. • https://gitlab.com/qemu-project/qemu/-/commit/defb7098 https://gitlab.com/qemu-project/qemu/-/issues/1268 https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/I7J5IRXJYLELW7D43A75LOWRUE5EU54O https://lore.kernel.org/qemu-devel/20221024154233.1043347-1-lk%40c--e.de https://security.netapp.com/advisory/ntap-20230127-0013 https://access.redhat.com/security/cve/CVE-2022-4172 https://bugzilla.redhat.com/show_bug.cgi?id=2149105 • CWE-120: Buffer Copy without Checking Size of Input ('Classic Buffer Overflow') CWE-190: Integer Overflow or Wraparound •
CVSS: 6.5EPSS: 0%CPEs: 4EXPL: 0CVE-2022-4144 – QEMU: QXL: qxl_phys2virt unsafe address translation can lead to out-of-bounds read
https://notcve.org/view.php?id=CVE-2022-4144
An out-of-bounds read flaw was found in the QXL display device emulation in QEMU. The qxl_phys2virt() function does not check the size of the structure pointed to by the guest physical address, potentially reading past the end of the bar space into adjacent pages. A malicious guest user could use this flaw to crash the QEMU process on the host causing a denial of service condition. Se encontró una falla de lectura fuera de los límites en la emulación del dispositivo de visualización QXL en QEMU. La función qxl_phys2virt() no verifica el tamaño de la estructura a la que apunta la dirección física del invitado, lo que potencialmente lee más allá del final del espacio de la barra en páginas adyacentes. • https://bugzilla.redhat.com/show_bug.cgi?id=2148506 https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/GTVPHLLXJ65BUMFBUUZ35F3J632SLFRK https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/I7J5IRXJYLELW7D43A75LOWRUE5EU54O https://lists.nongnu.org/archive/html/qemu-devel/2022-11/msg04143.html https://security.netapp.com/advisory/ntap-20230127-0012 https://access.redhat.com/security/cve/CVE-2022-4144 • CWE-125: Out-of-bounds Read •