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: 6.5EPSS: 0%CPEs: 18EXPL: 0CVE-2023-0751 – GELI silently omits the keyfile if read from stdin
https://notcve.org/view.php?id=CVE-2023-0751
When GELI reads a key file from standard input, it does not reuse the key file to initialize multiple providers at once resulting in the second and subsequent devices silently using a NULL key as the user key file. If a user only uses a key file without a user passphrase, the master key is encrypted with an empty key file allowing trivial recovery of the master key. • https://security.FreeBSD.org/advisories/FreeBSD-SA-23:01.geli.asc • CWE-20: Improper Input Validation •
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: 7.5EPSS: 0%CPEs: 30EXPL: 0CVE-2021-29632
https://notcve.org/view.php?id=CVE-2021-29632
In FreeBSD 13.0-STABLE before n247428-9352de39c3dc, 12.2-STABLE before r370674, 13.0-RELEASE before p6, and 12.2-RELEASE before p12, certain conditions involving use of the highlight buffer while text is scrolling on the console, console data may overwrite data structures associated with the system console or other kernel memory. En FreeBSD versión 13.0-STABLE anteriores a n247428-9352de39c3dc, 12.2-STABLE anteriores a r370674, 13.0-RELEASE anteriores a p6 y 12.2-RELEASE anteriores a p12, en determinadas condiciones que implican el uso del búfer de resaltado mientras el texto se desplaza en la consola, los datos de la consola pueden sobrescribir estructuras de datos asociadas con la consola del sistema u otra memoria del kernel • https://security.freebsd.org/advisories/FreeBSD-SA-22:01.vt.asc https://security.netapp.com/advisory/ntap-20220217-0004 •
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 •