CVSS: 7.8EPSS: 0%CPEs: 31EXPL: 2CVE-2020-25671
https://notcve.org/view.php?id=CVE-2020-25671
A vulnerability was found in Linux Kernel, where a refcount leak in llcp_sock_connect() causing use-after-free which might lead to privilege escalations. Se encontró una vulnerabilidad en el Kernel de Linux, donde un filtrado de refcount en la función llcp_sock_connect() causa un uso de la memoria previamente liberada que podría conllevar a una escaladas de privilegios • http://www.openwall.com/lists/oss-security/2020/11/01/1 https://lists.debian.org/debian-lts-announce/2021/06/msg00019.html https://lists.debian.org/debian-lts-announce/2021/06/msg00020.html https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/PW3OASG7OEMHANDWBM5US5WKTOC76KMH https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/UTVACC6PGS6OSD3EYY7FZUAZT2EUMFH5 https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.or • CWE-416: Use After Free •
CVSS: 4.3EPSS: 0%CPEs: 34EXPL: 0CVE-2020-26558 – bluez: Passkey Entry protocol of the Bluetooth Core is vulnerable to an impersonation attack
https://notcve.org/view.php?id=CVE-2020-26558
Bluetooth LE and BR/EDR secure pairing in Bluetooth Core Specification 2.1 through 5.2 may permit a nearby man-in-the-middle attacker to identify the Passkey used during pairing (in the Passkey authentication procedure) by reflection of the public key and the authentication evidence of the initiating device, potentially permitting this attacker to complete authenticated pairing with the responding device using the correct Passkey for the pairing session. The attack methodology determines the Passkey value one bit at a time. El emparejamiento seguro de Bluetooth LE y BR/EDR en Bluetooth Core Specification versiones 2.1 hasta 5.2, puede permitir a un atacante de tipo man-in-the-middle cercano identificar el Passkey usada durante el emparejamiento (en el procedimiento de autenticación de Passkey) mediante el reflejo de la clave pública y la evidencia de autenticació del dispositivo de inicio, potencialmente permitiendo a este atacante completar el emparejamiento autenticado con el dispositivo que responde usando la contraseña correcta para la sesión de emparejamiento. La metodología de ataque determina el valor de la Clave un bit a la vez A vulnerability was found in the bluez, where Passkey Entry protocol used in Secure Simple Pairing (SSP), Secure Connections (SC) and LE Secure Connections (LESC) of the Bluetooth Core Specification is vulnerable to an impersonation attack where an active attacker can impersonate the initiating device without any previous knowledge. • https://kb.cert.org/vuls/id/799380 https://lists.debian.org/debian-lts-announce/2021/06/msg00019.html https://lists.debian.org/debian-lts-announce/2021/06/msg00020.html https://lists.debian.org/debian-lts-announce/2021/06/msg00022.html https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/NSS6CTGE4UGTJLCOZOASDR3T3SLL6QJZ https://security.gentoo.org/glsa/202209-16 https://www.bluetooth.com/learn-about-bluetooth/key-attributes/bluetooth-security/reporting-security ht • CWE-287: Improper Authentication •
CVSS: 7.8EPSS: 0%CPEs: 1EXPL: 2CVE-2021-33033 – kernel: use-after-free in cipso_v4_genopt in net/ipv4/cipso_ipv4.c
https://notcve.org/view.php?id=CVE-2021-33033
The Linux kernel before 5.11.14 has a use-after-free in cipso_v4_genopt in net/ipv4/cipso_ipv4.c because the CIPSO and CALIPSO refcounting for the DOI definitions is mishandled, aka CID-ad5d07f4a9cd. This leads to writing an arbitrary value. El kernel de Linux versiones anteriores a 5.11.14, presenta un uso de la memoria previamente liberada en una función cipso_v4_genopt en el archivo net/ipv4/cipso_ipv4.c, porque el recuento de CIPSO y CALIPSO para las definiciones DOI es manejado inapropiadamente, también se conoce como CID-ad5d07f4a9cd. Esto conlleva a escribir un valor arbitrario A flaw use-after-free in the Linux kernel CIPSO network packet labeling protocol functionality was found in the way user open local network connection with the usage of the security labeling that is IP option number 134. A local user could use this flaw to crash the system or possibly escalate their privileges on the system. • https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.11.14 https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.11.7 https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=1165affd484889d4986cf3b724318935a0b120d8 https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=ad5d07f4a9cd671233ae20983848874731102c08 https://sites.google.com/view/syzscope/kasan-use-after-free-read-in-cipso_v4_genopt https://syzkaller.appspot.com/bug?id=96e7d345 • CWE-416: Use After Free •
CVSS: 7.8EPSS: 0%CPEs: 3EXPL: 2CVE-2021-33034 – kernel: use-after-free in net/bluetooth/hci_event.c when destroying an hci_chan
https://notcve.org/view.php?id=CVE-2021-33034
In the Linux kernel before 5.12.4, net/bluetooth/hci_event.c has a use-after-free when destroying an hci_chan, aka CID-5c4c8c954409. This leads to writing an arbitrary value. En el kernel de Linux versiones anteriores a 5.12.4, el archivo net/bluetooth/hci_event.c, presenta un uso de la memoria previamente liberada cuando se destruye un hci_chan, también se conoce como CID-5c4c8c954409. Esto conlleva a escribir un valor arbitrario A use-after-free flaw was found in hci_send_acl in the bluetooth host controller interface (HCI) in Linux kernel, where a local attacker with an access rights could cause a denial of service problem on the system The issue results from the object hchan, freed in hci_disconn_loglink_complete_evt, yet still used in other places. The highest threat from this vulnerability is to data integrity, confidentiality and system availability. • https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.12.4 https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=5c4c8c9544099bb9043a10a5318130a943e32fc3 https://lists.debian.org/debian-lts-announce/2021/06/msg00019.html https://lists.debian.org/debian-lts-announce/2021/06/msg00020.html https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/GI7Z7UBWBGD3ABNIL2DC7RQDCGA4UVQW https://sites.google.com/view/syzscope/kasan-use-after-free-read- • CWE-416: Use After Free •
CVSS: 7.8EPSS: 0%CPEs: 4EXPL: 0CVE-2021-23134 – Linux kernel llcp_sock_bind/connect use-after-free
https://notcve.org/view.php?id=CVE-2021-23134
Use After Free vulnerability in nfc sockets in the Linux Kernel before 5.12.4 allows local attackers to elevate their privileges. In typical configurations, the issue can only be triggered by a privileged local user with the CAP_NET_RAW capability. Una vulnerabilidad de uso de la memoria previamente liberada en nfc sockets en el Kernel de Linux versiones anteriores a 5.12.4 permite a atacantes locales escalar sus privilegios. En configuraciones típicas, el problema solo puede ser desencadenado por un usuario local privilegiado con la capacidad CAP_NET_RAW • https://git.kernel.org/pub/scm/linux/kernel/git/netdev/net.git/commit/?id=c61760e6940d https://lists.debian.org/debian-lts-announce/2021/06/msg00019.html https://lists.debian.org/debian-lts-announce/2021/06/msg00020.html https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/LZYORWNQIHNWRFYRDXBWYWBYM46PDZEN https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/QALNQT4LJFVSSA3MWCIECVY4AFPP4X77 https://security.netapp.com/advisory/ntap-20210625 • CWE-416: Use After Free •