CVSS: 9.8EPSS: 0%CPEs: 9EXPL: 1CVE-2021-3773 – kernel: lack of port sanity checking in natd and netfilter leads to exploit of OpenVPN clients
https://notcve.org/view.php?id=CVE-2021-3773
A flaw in netfilter could allow a network-connected attacker to infer openvpn connection endpoint information for further use in traditional network attacks. Un fallo en netfilter podría permitir a un atacante conectado a la red inferir información del endpoint de la conexión openvpn para su posterior uso en ataques de red tradicionales • https://github.com/d0rb/CVE-2021-3773 https://bugzilla.redhat.com/show_bug.cgi?id=2004949 https://www.oracle.com/security-alerts/cpujul2022.html https://citizenlab.ca/2024/07/vulnerabilities-in-vpns-paper-presented-at-the-privacy-enhancing-technologies-symposium-2024 https://access.redhat.com/security/cve/CVE-2021-3773 • CWE-200: Exposure of Sensitive Information to an Unauthorized Actor •
CVSS: 4.9EPSS: 0%CPEs: 16EXPL: 0CVE-2022-25258
https://notcve.org/view.php?id=CVE-2022-25258
An issue was discovered in drivers/usb/gadget/composite.c in the Linux kernel before 5.16.10. The USB Gadget subsystem lacks certain validation of interface OS descriptor requests (ones with a large array index and ones associated with NULL function pointer retrieval). Memory corruption might occur. Se ha descubierto un problema en drivers/usb/gadget/composite.c en el kernel de Linux anterior a la versión 5.16.10. El subsistema USB Gadget carece de cierta validación de las solicitudes de descriptor del SO de la interfaz (las que tienen un índice de matriz grande y las asociadas a la recuperación de punteros de función NULL). • https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.16.10 https://github.com/szymonh/d-os-descriptor https://github.com/torvalds/linux/commit/75e5b4849b81e19e9efe1654b30d7f3151c33c2c https://lists.debian.org/debian-lts-announce/2022/03/msg00011.html https://lists.debian.org/debian-lts-announce/2022/03/msg00012.html https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/TCW2KZYJ2H6BKZE3CVLHRIXYDGNYYC5P https://security.netapp.com/advisory/ntap-20221028-0007 https:/ • CWE-476: NULL Pointer Dereference •
CVSS: 7.8EPSS: 0%CPEs: 20EXPL: 0CVE-2022-24958
https://notcve.org/view.php?id=CVE-2022-24958
drivers/usb/gadget/legacy/inode.c in the Linux kernel through 5.16.8 mishandles dev->buf release. el archivo drivers/usb/gadget/legacy/inode.c en el kernel de Linux versiones hasta 5.16.8 maneja inapropiadamente la liberación dev-) buf • https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit?id=89f3594d0de58e8a57d92d497dea9fee3d4b9cda https://github.com/torvalds/linux/commit/501e38a5531efbd77d5c73c0ba838a889bfc1d74 https://github.com/torvalds/linux/commit/89f3594d0de58e8a57d92d497dea9fee3d4b9cda https://lists.debian.org/debian-lts-announce/2022/07/msg00000.html https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/SUVZA2YVOQJBJTDIDQ5HF5TAU2C6WP6H https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject& • CWE-763: Release of Invalid Pointer or Reference •
CVSS: 7.4EPSS: 0%CPEs: 35EXPL: 0CVE-2021-20322 – kernel: new DNS Cache Poisoning Attack based on ICMP fragment needed packets replies
https://notcve.org/view.php?id=CVE-2021-20322
A flaw in the processing of received ICMP errors (ICMP fragment needed and ICMP redirect) in the Linux kernel functionality was found to allow the ability to quickly scan open UDP ports. This flaw allows an off-path remote user to effectively bypass the source port UDP randomization. The highest threat from this vulnerability is to confidentiality and possibly integrity, because software that relies on UDP source port randomization are indirectly affected as well. Se encontró un fallo en el procesamiento de los errores ICMP recibidos (fragmento ICMP necesario y redireccionamiento ICMP) en la funcionalidad del kernel de Linux que permite la capacidad de escanear rápidamente los puertos UDP abiertos. Este fallo permite a un usuario remoto fuera de la ruta de acceso omitir efectivamente la aleatorización del puerto de origen UDP. • https://bugzilla.redhat.com/show_bug.cgi?id=2014230 https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?h=v5.15-rc6&id=4785305c05b25a242e5314cc821f54ade4c18810 https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?h=v5.15-rc6&id=6457378fe796815c973f631a1904e147d6ee33b1 https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/net/ipv4/route.c?h=v5.15-rc6&id=67d6d681e15b578c1725bad8ad079e05d1c48a8e https://git.kernel.org/pub/scm/linux/ke • CWE-330: Use of Insufficiently Random Values •
CVSS: 8.8EPSS: 0%CPEs: 5EXPL: 1CVE-2021-4093 – kernel: KVM: SVM: out-of-bounds read/write in sev_es_string_io
https://notcve.org/view.php?id=CVE-2021-4093
A flaw was found in the KVM's AMD code for supporting the Secure Encrypted Virtualization-Encrypted State (SEV-ES). A KVM guest using SEV-ES can trigger out-of-bounds reads and writes in the host kernel via a malicious VMGEXIT for a string I/O instruction (for example, outs or ins) using the exit reason SVM_EXIT_IOIO. This issue results in a crash of the entire system or a potential guest-to-host escape scenario. Se ha encontrado un fallo en el código de AMD de KVM para soportar la Virtualización Segura Encriptada-Estado Encriptado (SEV-ES). Un huésped de KVM que use SEV-ES puede desencadenar lecturas y escrituras fuera de límites en el núcleo anfitrión por medio de un VMGEXIT malicioso para una instrucción de E/S de cadena (por ejemplo, outs o ins) usando el motivo de salida SVM_EXIT_IOIO. • https://bugs.chromium.org/p/project-zero/issues/detail?id=2222 https://bugzilla.redhat.com/show_bug.cgi?id=2028584 https://access.redhat.com/security/cve/CVE-2021-4093 • CWE-125: Out-of-bounds Read CWE-787: Out-of-bounds Write •