CVSS: 7.5EPSS: 0%CPEs: 5EXPL: 0CVE-2021-4213 – JSS: memory leak in TLS connection leads to OOM
https://notcve.org/view.php?id=CVE-2021-4213
A flaw was found in JSS, where it did not properly free up all memory. Over time, the wasted memory builds up in the server memory, saturating the server’s RAM. This flaw allows an attacker to force the invocation of an out-of-memory process, causing a denial of service. Se ha encontrado un fallo en JSS, que no libera apropiadamente toda la memoria. Con el tiempo, la memoria desperdiciada es acumulada en la memoria del servidor, saturando la RAM del mismo. • https://access.redhat.com/security/cve/CVE-2021-4213 https://bugzilla.redhat.com/show_bug.cgi?id=2042900 https://github.com/dogtagpki/jss/commit/3aabe0e9d59b0a42e68ac8cd0468f9c5179967d2 https://github.com/dogtagpki/jss/commit/5922560a78d0dee61af8a33cc9cfbf4cfa291448 https://security-tracker.debian.org/tracker/CVE-2021-4213 • CWE-401: Missing Release of Memory after Effective Lifetime •
CVSS: 6.8EPSS: 0%CPEs: 8EXPL: 0CVE-2021-20316 – samba: Symlink race error can allow metadata read and modify outside of the exported share
https://notcve.org/view.php?id=CVE-2021-20316
A flaw was found in the way Samba handled file/directory metadata. This flaw allows an authenticated attacker with permissions to read or modify share metadata, to perform this operation outside of the share. Se ha encontrado un fallo en la forma en que Samba maneja los metadatos de los archivos/directorios. Este fallo permite a un atacante autenticado con permisos para leer o modificar los metadatos del recurso compartido, llevar a cabo esta operación fuera del recurso compartido. • https://access.redhat.com/security/cve/CVE-2021-20316 https://bugzilla.redhat.com/show_bug.cgi?id=2009673 https://bugzilla.samba.org/show_bug.cgi?id=14842 https://security-tracker.debian.org/tracker/CVE-2021-20316 https://security.gentoo.org/glsa/202309-06 https://www.samba.org/samba/security/CVE-2021-20316.html • CWE-362: Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition') •
CVSS: 6.5EPSS: 0%CPEs: 21EXPL: 0CVE-2021-3975 – libvirt: segmentation fault during VM shutdown can lead to vdsm hang
https://notcve.org/view.php?id=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. Se ha encontrado un fallo de uso de memoria previamente liberada en libvirt. • https://access.redhat.com/security/cve/CVE-2021-3975 https://bugzilla.redhat.com/show_bug.cgi?id=2024326 https://github.com/libvirt/libvirt/commit/1ac703a7d0789e46833f4013a3876c2e3af18ec7 https://lists.debian.org/debian-lts-announce/2024/04/msg00000.html https://security.netapp.com/advisory/ntap-20221201-0002 https://ubuntu.com/security/CVE-2021-3975 • CWE-416: Use After Free •
CVSS: 8.2EPSS: 0%CPEs: 5EXPL: 1CVE-2021-4206 – QEMU: QXL: integer overflow in cursor_alloc() can lead to heap buffer overflow
https://notcve.org/view.php?id=CVE-2021-4206
A flaw was found in the QXL display device emulation in QEMU. An integer overflow in the cursor_alloc() function can lead to the allocation of a small cursor object followed by a subsequent heap-based buffer overflow. This flaw allows a malicious privileged guest user to crash the QEMU process on the host or potentially execute arbitrary code within the context of the QEMU process. Se ha encontrado un fallo en la emulación del dispositivo de visualización QXL en QEMU. Un desbordamiento de enteros en la función cursor_alloc() puede conllevar a una asignación de un pequeño objeto cursor seguido de un posterior desbordamiento del búfer en la región heap de la memoria. • https://bugzilla.redhat.com/show_bug.cgi?id=2036998 https://lists.debian.org/debian-lts-announce/2022/09/msg00008.html https://security.gentoo.org/glsa/202208-27 https://starlabs.sg/advisories/21-4206 https://www.debian.org/security/2022/dsa-5133 https://access.redhat.com/security/cve/CVE-2021-4206 • CWE-120: Buffer Copy without Checking Size of Input ('Classic Buffer Overflow') CWE-131: Incorrect Calculation of Buffer Size CWE-190: Integer Overflow or Wraparound •
CVSS: 8.2EPSS: 0%CPEs: 5EXPL: 1CVE-2021-4207 – QEMU: QXL: double fetch in qxl_cursor() can lead to heap buffer overflow
https://notcve.org/view.php?id=CVE-2021-4207
A flaw was found in the QXL display device emulation in QEMU. A double fetch of guest controlled values `cursor->header.width` and `cursor->header.height` can lead to the allocation of a small cursor object followed by a subsequent heap-based buffer overflow. A malicious privileged guest user could use this flaw to crash the QEMU process on the host or potentially execute arbitrary code within the context of the QEMU process. Se ha encontrado un fallo en la emulación del dispositivo de visualización QXL en QEMU. Una doble obtención de los valores controlados por el huésped "cursor-)header.width" y "cursor-)header.height" puede conllevar a una asignación de un pequeño objeto cursor seguido de un posterior desbordamiento del búfer en la región heap de la memoria. • https://bugzilla.redhat.com/show_bug.cgi?id=2036966 https://lists.debian.org/debian-lts-announce/2022/09/msg00008.html https://security.gentoo.org/glsa/202208-27 https://starlabs.sg/advisories/21-4207 https://www.debian.org/security/2022/dsa-5133 https://access.redhat.com/security/cve/CVE-2021-4207 • CWE-120: Buffer Copy without Checking Size of Input ('Classic Buffer Overflow') CWE-362: Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition') •