CVSS: 4.7EPSS: 0%CPEs: 19EXPL: 1CVE-2021-3753 – kernel: a race out-of-bound read in vt
https://notcve.org/view.php?id=CVE-2021-3753
A race problem was seen in the vt_k_ioctl in drivers/tty/vt/vt_ioctl.c in the Linux kernel, which may cause an out of bounds read in vt as the write access to vc_mode is not protected by lock-in vt_ioctl (KDSETMDE). The highest threat from this vulnerability is to data confidentiality. Se observó un problema de carrera en el la función vt_k_ioctl en el archivo drivers/tty/vt/vt_ioctl.c en el kernel de Linux, que puede causar una lectura fuera de límites en vt ya que el acceso de escritura a vc_mode no está protegido por el bloqueo de vt_ioctl (KDSETMDE). La mayor amenaza de esta vulnerabilidad es para la confidencialidad de los datos • https://bugzilla.redhat.com/show_bug.cgi?id=1999589 https://github.com/torvalds/linux/commit/2287a51ba822384834dafc1c798453375d1107c7 https://security.netapp.com/advisory/ntap-20221028-0003 https://www.openwall.com/lists/oss-security/2021/09/01/4 https://access.redhat.com/security/cve/CVE-2021-3753 • CWE-125: Out-of-bounds Read CWE-362: Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition') •
CVSS: 7.5EPSS: 1%CPEs: 27EXPL: 1CVE-2021-3737 – python: urllib: HTTP client possible infinite loop on a 100 Continue response
https://notcve.org/view.php?id=CVE-2021-3737
A flaw was found in python. An improperly handled HTTP response in the HTTP client code of python may allow a remote attacker, who controls the HTTP server, to make the client script enter an infinite loop, consuming CPU time. The highest threat from this vulnerability is to system availability. Se ha encontrado un fallo en python. Una respuesta HTTP manejada inapropiadamente en el código del cliente HTTP de python puede permitir a un atacante remoto, que controle el servidor HTTP, hacer que el script del cliente entre en un bucle infinito, consumiendo tiempo de CPU. • https://bugs.python.org/issue44022 https://bugzilla.redhat.com/show_bug.cgi?id=1995162 https://github.com/python/cpython/pull/25916 https://github.com/python/cpython/pull/26503 https://lists.debian.org/debian-lts-announce/2023/05/msg00024.html https://lists.debian.org/debian-lts-announce/2023/06/msg00039.html https://python-security.readthedocs.io/vuln/urllib-100-continue-loop.html https://security.netapp.com/advisory/ntap-20220407-0009 https://ubuntu.com/security/CVE-2021-3737 • CWE-400: Uncontrolled Resource Consumption CWE-835: Loop with Unreachable Exit Condition ('Infinite Loop') •
CVSS: 7.5EPSS: 0%CPEs: 6EXPL: 0CVE-2021-3632 – keycloak: Anyone can register a new device when there is no device registered for passwordless login
https://notcve.org/view.php?id=CVE-2021-3632
A flaw was found in Keycloak. This vulnerability allows anyone to register a new security device or key when there is not a device already registered for any user by using the WebAuthn password-less login flow. Se ha encontrado un fallo en Keycloak. Esta vulnerabilidad permite a cualquiera registrar un nuevo dispositivo de seguridad o llave cuando no se presenta un dispositivo ya registrado para ningún usuario, al usar el flujo de inicio de sesión sin contraseña de WebAuthn. • https://access.redhat.com/security/cve/CVE-2021-3632 https://bugzilla.redhat.com/show_bug.cgi?id=1978196 https://github.com/keycloak/keycloak/commit/65480cb5a11630909c086f79d396004499fbd1e4 https://github.com/keycloak/keycloak/pull/8203 https://issues.redhat.com/browse/KEYCLOAK-18500 • CWE-287: Improper Authentication •
CVSS: 8.8EPSS: 0%CPEs: 76EXPL: 1CVE-2021-3656 – kernel: SVM nested virtualization issue in KVM (VMLOAD/VMSAVE)
https://notcve.org/view.php?id=CVE-2021-3656
A flaw was found in the KVM's AMD code for supporting SVM nested virtualization. The flaw occurs when processing the VMCB (virtual machine control block) provided by the L1 guest to spawn/handle a nested guest (L2). Due to improper validation of the "virt_ext" field, this issue could allow a malicious L1 to disable both VMLOAD/VMSAVE intercepts and VLS (Virtual VMLOAD/VMSAVE) for the L2 guest. As a result, the L2 guest would be allowed to read/write physical pages of the host, resulting in a crash of the entire system, leak of sensitive data or potential guest-to-host escape. Se ha encontrado un fallo en el código AMD de KVM para soportar la virtualización anidada SVM. • https://github.com/rami08448/CVE-2021-3656-Demo https://bugzilla.redhat.com/show_bug.cgi?id=1983988 https://git.kernel.org/pub/scm/virt/kvm/kvm.git/commit/?id=c7dfa4009965a9b2d7b329ee970eb8da0d32f0bc https://github.com/torvalds/linux/commit/c7dfa4009965a9b2d7b329ee970eb8da0d32f0bc https://www.openwall.com/lists/oss-security/2021/08/16/1 https://access.redhat.com/security/cve/CVE-2021-3656 • CWE-862: Missing Authorization •
CVSS: 5.9EPSS: 0%CPEs: 22EXPL: 0CVE-2021-3597 – undertow: HTTP2SourceChannel fails to write final frame under some circumstances may lead to DoS
https://notcve.org/view.php?id=CVE-2021-3597
A flaw was found in undertow. The HTTP2SourceChannel fails to write the final frame under some circumstances, resulting in a denial of service. The highest threat from this vulnerability is availability. This flaw affects Undertow versions prior to 2.0.35.SP1, prior to 2.2.6.SP1, prior to 2.2.7.SP1, prior to 2.0.36.SP1, prior to 2.2.9.Final and prior to 2.0.39.Final. Se ha encontrado un fallo en Undertow. • https://bugzilla.redhat.com/show_bug.cgi?id=1970930 https://security.netapp.com/advisory/ntap-20220804-0003 https://access.redhat.com/security/cve/CVE-2021-3597 • CWE-362: Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition') •