CVSS: 9.8EPSS: 0%CPEs: 19EXPL: 0CVE-2023-3326 – Network authentication attack via pam_krb5
https://notcve.org/view.php?id=CVE-2023-3326
pam_krb5 authenticates a user by essentially running kinit with the password, getting a ticket-granting ticket (tgt) from the Kerberos KDC (Key Distribution Center) over the network, as a way to verify the password. However, if a keytab is not provisioned on the system, pam_krb5 has no way to validate the response from the KDC, and essentially trusts the tgt provided over the network as being valid. In a non-default FreeBSD installation that leverages pam_krb5 for authentication and does not have a keytab provisioned, an attacker that is able to control both the password and the KDC responses can return a valid tgt, allowing authentication to occur for any user on the system. • https://security.FreeBSD.org/advisories/FreeBSD-SA-23:04.pam_krb5.asc https://security.FreeBSD.org/advisories/FreeBSD-SA-23:09.pam_krb5.asc https://security.netapp.com/advisory/ntap-20230714-0005 • CWE-287: Improper Authentication CWE-303: Incorrect Implementation of Authentication Algorithm •
CVSS: 7.5EPSS: 0%CPEs: 1EXPL: 0CVE-2022-32264
https://notcve.org/view.php?id=CVE-2022-32264
sys/netinet/tcp_timer.h in FreeBSD before 7.0 contains a denial-of-service (DoS) vulnerability due to improper handling of TSopt on TCP connections. NOTE: This vulnerability only affects products that are no longer supported by the maintainer El archivo sys/netinet/tcp_timer.h en FreeBSD versiones anteriores a 7.0, contiene una vulnerabilidad de denegación de servicio (DoS) debido a un manejo inapropiado de TSopt en conexiones TCP. NOTA: Esta vulnerabilidad sólo afecta a productos que ya no son soportados por el mantenedor. • http://jvn.jp/en/jp/JVN20930118 https://cgit.freebsd.org/src/commit/?id=4dc630cdd2f7a790604d2724ecb19c6aa95130a7 • CWE-755: Improper Handling of Exceptional Conditions •
CVSS: 8.1EPSS: 0%CPEs: 29EXPL: 0CVE-2021-29630
https://notcve.org/view.php?id=CVE-2021-29630
In FreeBSD 13.0-STABLE before n246938-0729ba2f49c9, 12.2-STABLE before r370383, 11.4-STABLE before r370381, 13.0-RELEASE before p4, 12.2-RELEASE before p10, and 11.4-RELEASE before p13, the ggatec daemon does not validate the size of a response before writing it to a fixed-sized buffer allowing a malicious attacker in a privileged network position to overwrite the stack of ggatec and potentially execute arbitrary code. En FreeBSD versiones 13.0-STABLE anteriores a n246938-0729ba2f49c9, 12.2-STABLE anteriores a r370383, 11.4-STABLE anteriores a r370381, 13.0-RELEASE anteriores a p4, 12.2-RELEASE anteriores a p10, y 11. 4-RELEASE anteriores a p13, el demonio ggatec no comprueba el tamaño de una respuesta antes de escribirla en un búfer de tamaño fijo, permitiendo a un atacante malicioso en una posición de red privilegiada sobrescribir la pila de ggatec y ejecutar potencialmente código arbitrario. • https://security.FreeBSD.org/advisories/FreeBSD-SA-21:14.ggatec.asc https://security.netapp.com/advisory/ntap-20210923-0005 • CWE-787: Out-of-bounds Write •
CVSS: 7.8EPSS: 0%CPEs: 29EXPL: 0CVE-2021-29631
https://notcve.org/view.php?id=CVE-2021-29631
In FreeBSD 13.0-STABLE before n246941-20f96f215562, 12.2-STABLE before r370400, 11.4-STABLE before r370399, 13.0-RELEASE before p4, 12.2-RELEASE before p10, and 11.4-RELEASE before p13, certain VirtIO-based device models in bhyve failed to handle errors when fetching I/O descriptors. A malicious guest may cause the device model to operate on uninitialized I/O vectors leading to memory corruption, crashing of the bhyve process, and possibly arbitrary code execution in the bhyve process. En FreeBSD versiones 13.0-STABLE anteriores a n246941-20f96f215562, 12.2-STABLE anteriores a r370400, 11.4-STABLE anteriores a r370399, 13.0-RELEASE anteriores a p4, 12.2-RELEASE anteriores a p10, y 11.4-RELEASE anteriores a p13, determinados modelos de dispositivos basados en VirtIO en bhyve presentaban un fallo al manejar los errores cuando se obtenían descriptores de E/S. Un huésped malicioso puede causar al modelo de dispositivo operar en vectores de E/S no inicializados, conllevando a una corrupción de la memoria, un bloqueo del proceso bhyve y, posiblemente, una ejecución de código arbitrario en el proceso bhyve. • https://security.FreeBSD.org/advisories/FreeBSD-SA-21:13.bhyve.asc https://security.netapp.com/advisory/ntap-20210923-0004 • CWE-908: Use of Uninitialized Resource •
CVSS: 7.5EPSS: 0%CPEs: 20EXPL: 0CVE-2020-7469
https://notcve.org/view.php?id=CVE-2020-7469
In FreeBSD 12.2-STABLE before r367402, 11.4-STABLE before r368202, 12.2-RELEASE before p1, 12.1-RELEASE before p11 and 11.4-RELEASE before p5 the handler for a routing option caches a pointer into the packet buffer holding the ICMPv6 message. However, when processing subsequent options the packet buffer may be freed, rendering the cached pointer invalid. The network stack may later dereference the pointer, potentially triggering a use-after-free. En FreeBSD versiones 12.2-STABLE anteriores a r367402, versiones 11.4-STABLE anteriores a r368202, versiones 12.2-RELEASE anteriores a p1, versiones 12.1-RELEASE anteriores a p11 y versiones 11.4-RELEASE anteriores a p5, el manejador para una opción de enrutamiento almacena en caché un puntero en el búfer de paquetes que contiene el mensaje ICMPv6. Sin embargo, cuando se procesan opciones posteriores, el búfer de paquetes puede ser liberado, renderizando el puntero inválido en caché. • https://security.FreeBSD.org/advisories/FreeBSD-SA-20:31.icmp6.asc https://security.netapp.com/advisory/ntap-20210720-0001 • CWE-416: Use After Free •