CVSS: 6.0EPSS: 0%CPEs: 5EXPL: 0CVE-2021-20221 – qemu: out-of-bound heap buffer access via an interrupt ID field
https://notcve.org/view.php?id=CVE-2021-20221
07 Apr 2021 — An out-of-bounds heap buffer access issue was found in the ARM Generic Interrupt Controller emulator of QEMU up to and including qemu 4.2.0on aarch64 platform. The issue occurs because while writing an interrupt ID to the controller memory area, it is not masked to be 4 bits wide. It may lead to the said issue while updating controller state fields and their subsequent processing. A privileged guest user may use this flaw to crash the QEMU process on the host resulting in DoS scenario. Se encontró un proble... • http://www.openwall.com/lists/oss-security/2021/02/05/1 • CWE-125: Out-of-bounds Read CWE-787: Out-of-bounds Write •
CVSS: 6.5EPSS: 0%CPEs: 1EXPL: 0CVE-2021-20295 – QEMU: Regression of CVE-2020-10756 fix in virt:rhel/qemu-kvm in Red Hat Enterprise Linux 8.3
https://notcve.org/view.php?id=CVE-2021-20295
06 Apr 2021 — It was discovered that the update for the virt:rhel module in the RHSA-2020:4676 (https://access.redhat.com/errata/RHSA-2020:4676) erratum released as part of Red Hat Enterprise Linux 8.3 failed to include the fix for the qemu-kvm component issue CVE-2020-10756, which was previously corrected in virt:rhel/qemu-kvm via erratum RHSA-2020:4059 (https://access.redhat.com/errata/RHSA-2020:4059). CVE-2021-20295 was assigned to that Red Hat specific security regression. For more details about the original security... • https://access.redhat.com/security/cve/CVE-2020-10756 • CWE-125: Out-of-bounds Read •
CVSS: 5.7EPSS: 0%CPEs: 4EXPL: 0CVE-2021-3409 – Ubuntu Security Notice USN-5010-1
https://notcve.org/view.php?id=CVE-2021-3409
23 Mar 2021 — The patch for CVE-2020-17380/CVE-2020-25085 was found to be ineffective, thus making QEMU vulnerable to the out-of-bounds read/write access issues previously found in the SDHCI controller emulation code. This flaw allows a malicious privileged guest to crash the QEMU process on the host, resulting in a denial of service or potential code execution. QEMU up to (including) 5.2.0 is affected by this. Se detectó que el parche para CVE-2020-17380/CVE-2020-25085 era ineficaz, por lo que QEMU era vulnerable a prob... • https://bugzilla.redhat.com/show_bug.cgi?id=1928146 • CWE-119: Improper Restriction of Operations within the Bounds of a Memory Buffer •
CVSS: 3.2EPSS: 0%CPEs: 4EXPL: 1CVE-2021-3392 – Ubuntu Security Notice USN-5010-1
https://notcve.org/view.php?id=CVE-2021-3392
23 Mar 2021 — A use-after-free flaw was found in the MegaRAID emulator of QEMU. This issue occurs while processing SCSI I/O requests in the case of an error mptsas_free_request() that does not dequeue the request object 'req' from a pending requests queue. This flaw allows a privileged guest user to crash the QEMU process on the host, resulting in a denial of service. Versions between 2.10.0 and 5.2.0 are potentially affected. Se encontró un fallo de uso de la memoria previamente liberada en el emulador MegaRAID de QEMU. • https://bugs.launchpad.net/qemu/+bug/1914236 • CWE-416: Use After Free •
CVSS: 6.0EPSS: 0%CPEs: 8EXPL: 0CVE-2021-3416 – QEMU: net: Infinite loop in loopback mode may lead to stack overflow
https://notcve.org/view.php?id=CVE-2021-3416
18 Mar 2021 — A potential stack overflow via infinite loop issue was found in various NIC emulators of QEMU in versions up to and including 5.2.0. The issue occurs in loopback mode of a NIC wherein reentrant DMA checks get bypassed. A guest user/process may use this flaw to consume CPU cycles or crash the QEMU process on the host resulting in DoS scenario. Se encontró un posible desbordamiento de la pila por medio de un problema de bucle infinito en varios emuladores de NIC de QEMU en versiones hasta 5.2.0 incluyéndola.&... • https://bugzilla.redhat.com/show_bug.cgi?id=1932827 • CWE-835: Loop with Unreachable Exit Condition ('Infinite Loop') •
CVSS: 3.3EPSS: 0%CPEs: 1EXPL: 0CVE-2021-20263 – Gentoo Linux Security Advisory 202208-27
https://notcve.org/view.php?id=CVE-2021-20263
09 Mar 2021 — A flaw was found in the virtio-fs shared file system daemon (virtiofsd) of QEMU. The new 'xattrmap' option may cause the 'security.capability' xattr in the guest to not drop on file write, potentially leading to a modified, privileged executable in the guest. In rare circumstances, this flaw could be used by a malicious user to elevate their privileges within the guest. Se encontró un fallo en el demonio del sistema de archivos compartidos virtio-fs (virtiofsd) de QEMU. La nueva opción "xattrmap" puede... • https://bugzilla.redhat.com/show_bug.cgi?id=1933668 • CWE-281: Improper Preservation of Permissions •
CVSS: 3.2EPSS: 0%CPEs: 4EXPL: 1CVE-2021-20203 – Ubuntu Security Notice USN-5307-1
https://notcve.org/view.php?id=CVE-2021-20203
25 Feb 2021 — An integer overflow issue was found in the vmxnet3 NIC emulator of the QEMU for versions up to v5.2.0. It may occur if a guest was to supply invalid values for rx/tx queue size or other NIC parameters. A privileged guest user may use this flaw to crash the QEMU process on the host resulting in DoS scenario. Se encontró un problema de desbordamiento de enteros en el emulador de NIC vmxnet3 de QEMU para versiones hasta v5.2.0. Puede ocurrir si un invitado estaba suministrando valores no válidos para el t... • https://bugs.launchpad.net/qemu/+bug/1913873 • CWE-190: Integer Overflow or Wraparound •
CVSS: 7.5EPSS: 0%CPEs: 3EXPL: 0CVE-2021-20181 – QEMU Plan 9 File System Time-Of-Check Time-Of-Use Privilege Escalation Vulnerability
https://notcve.org/view.php?id=CVE-2021-20181
08 Feb 2021 — A race condition flaw was found in the 9pfs server implementation of QEMU up to and including 5.2.0. This flaw allows a malicious 9p client to cause a use-after-free error, potentially escalating their privileges on the system. The highest threat from this vulnerability is to confidentiality, integrity as well as system availability. Se encontró un fallo de condición de carrera en la implementación del servidor 9pfs de QEMU versiones hasta 5.2.0 incluyéndola. Este fallo permite a un cliente 9p malicios... • https://bugzilla.redhat.com/show_bug.cgi?id=1927007 • CWE-362: Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition') CWE-367: Time-of-check Time-of-use (TOCTOU) Race Condition •
CVSS: 8.2EPSS: 0%CPEs: 1EXPL: 2CVE-2020-35517 – QEMU: virtiofsd: potential privileged host device access from guest
https://notcve.org/view.php?id=CVE-2020-35517
28 Jan 2021 — A flaw was found in qemu. A host privilege escalation issue was found in the virtio-fs shared file system daemon where a privileged guest user is able to create a device special file in the shared directory and use it to r/w access host devices. Se encontró un fallo en qemu. Se encontró un problema de escalada de privilegios del host en el demonio del sistema de archivos compartidos virtio-fs, donde un usuario invitado privilegiado puede crear un archivo especial de dispositivo en el directorio compart... • https://bugzilla.redhat.com/show_bug.cgi?id=1915823 • CWE-269: Improper Privilege Management •
CVSS: 3.9EPSS: 0%CPEs: 3EXPL: 0CVE-2020-29443 – QEMU: ide: atapi: OOB access while processing read commands
https://notcve.org/view.php?id=CVE-2020-29443
22 Jan 2021 — ide_atapi_cmd_reply_end in hw/ide/atapi.c in QEMU 5.1.0 allows out-of-bounds read access because a buffer index is not validated. La función ide_atapi_cmd_reply_end en el archivo hw/ide/atapi.c, en QEMU versión 5.1.0, permite un acceso de lectura fuera de límites porque un índice de búfer no está comprobado An out-of-bounds read-access flaw was found in the ATAPI Emulator of QEMU. This issue occurs while processing the ATAPI read command if the logical block address(LBA) is set to an invalid value. A guest ... • http://www.openwall.com/lists/oss-security/2021/01/18/2 • CWE-125: Out-of-bounds Read •