CVSS: 7.8EPSS: 0%CPEs: 23EXPL: 0CVE-2023-6534 – TCP spoofing vulnerability in pf(4)
https://notcve.org/view.php?id=CVE-2023-6534
13 Dec 2023 — In versions of FreeBSD 14.0-RELEASE before 14-RELEASE-p2, FreeBSD 13.2-RELEASE before 13.2-RELEASE-p7 and FreeBSD 12.4-RELEASE before 12.4-RELEASE-p9, the pf(4) packet filter incorrectly validates TCP sequence numbers. This could allow a malicious actor to execute a denial-of-service attack against hosts behind the firewall. En las versiones de FreeBSD 14.0-RELEASE anteriores a 14-RELEASE-p2, FreeBSD 13.2-RELEASE anteriores a 13.2-RELEASE-p7 y FreeBSD 12.4-RELEASE anteriores a 12.4-RELEASE-p9, el filtro de ... • https://security.freebsd.org/advisories/FreeBSD-SA-23:17.pf.asc •
CVSS: 7.8EPSS: 0%CPEs: 6EXPL: 0CVE-2023-5978 – Incorrect libcap_net limitation list manipulation
https://notcve.org/view.php?id=CVE-2023-5978
08 Nov 2023 — In versions of FreeBSD 13-RELEASE before 13-RELEASE-p5, under certain circumstances the cap_net libcasper(3) service incorrectly validates that updated constraints are strictly subsets of the active constraints. When only a list of resolvable domain names was specified without setting any other limitations, an application could submit a new list of domains including include entries not previously listed. This could permit the application to resolve domain names that were previously restricted. En las versio... • https://security.freebsd.org/advisories/FreeBSD-SA-23:16.cap_net.asc • CWE-269: Improper Privilege Management •
CVSS: 10.0EPSS: 1%CPEs: 16EXPL: 0CVE-2023-5941 – libc stdio buffer overflow
https://notcve.org/view.php?id=CVE-2023-5941
08 Nov 2023 — In versions of FreeBSD 12.4-RELEASE prior to 12.4-RELEASE-p7 and FreeBSD 13.2-RELEASE prior to 13.2-RELEASE-p5 the __sflush() stdio function in libc does not correctly update FILE objects' write space members for write-buffered streams when the write(2) system call returns an error. Depending on the nature of an application that calls libc's stdio functions and the presence of errors returned from the write(2) system call (or an overridden stdio write routine) a heap buffer overflow may occur. Such overflow... • https://security.freebsd.org/advisories/FreeBSD-SA-23:15.stdio.asc • CWE-131: Incorrect Calculation of Buffer Size CWE-787: Out-of-bounds Write •
CVSS: 6.8EPSS: 0%CPEs: 12EXPL: 0CVE-2023-5368 – msdosfs data disclosure
https://notcve.org/view.php?id=CVE-2023-5368
04 Oct 2023 — On an msdosfs filesystem, the 'truncate' or 'ftruncate' system calls under certain circumstances populate the additional space in the file with unallocated data from the underlying disk device, rather than zero bytes. This may permit a user with write access to files on a msdosfs filesystem to read unintended data (e.g. from a previously deleted file). En un sistema de archivos msdosfs, las llamadas al sistema 'truncate' o 'ftruncate' bajo ciertas circunstancias llenan el espacio adicional en el archivo con... • https://dfir.ru/2023/11/01/bringing-unallocated-data-back-the-fat12-16-32-case • CWE-1188: Initialization of a Resource with an Insecure Default •
CVSS: 7.8EPSS: 0%CPEs: 12EXPL: 0CVE-2023-4809 – pf incorrectly handles multiple IPv6 fragment headers
https://notcve.org/view.php?id=CVE-2023-4809
06 Sep 2023 — In pf packet processing with a 'scrub fragment reassemble' rule, a packet containing multiple IPv6 fragment headers would be reassembled, and then immediately processed. That is, a packet with multiple fragment extension headers would not be recognized as the correct ultimate payload. Instead a packet with multiple IPv6 fragment headers would unexpectedly be interpreted as a fragmented packet, rather than as whatever the real payload is. As a result, IPv6 fragments may bypass pf firewall rules written on th... • http://www.openwall.com/lists/oss-security/2023/09/08/5 • CWE-167: Improper Handling of Additional Special Element •
CVSS: 8.8EPSS: 0%CPEs: 14EXPL: 0CVE-2023-3494 – bhyve privileged guest escape via fwctl
https://notcve.org/view.php?id=CVE-2023-3494
01 Aug 2023 — The fwctl driver implements a state machine which is executed when a bhyve guest accesses certain x86 I/O ports. The interface lets the guest copy a string into a buffer resident in the bhyve process' memory. A bug in the state machine implementation can result in a buffer overflowing when copying this string. Malicious, privileged software running in a guest VM can exploit the buffer overflow to achieve code execution on the host in the bhyve userspace process, which typically runs as root, mitigated by th... • https://security.FreeBSD.org/advisories/FreeBSD-SA-23:07.bhyve.asc • CWE-120: Buffer Copy without Checking Size of Input ('Classic Buffer Overflow') •
CVSS: 7.8EPSS: 0%CPEs: 21EXPL: 0CVE-2023-3107 – Remote denial of service in IPv6 fragment reassembly
https://notcve.org/view.php?id=CVE-2023-3107
01 Aug 2023 — A set of carefully crafted ipv6 packets can trigger an integer overflow in the calculation of a fragment reassembled packet's payload length field. This allows an attacker to trigger a kernel panic, resulting in a denial of service. Un conjunto de paquetes ipv6 cuidadosamente diseñados puede desencadenar un desbordamiento de enteros en el cálculo del campo de longitud de la carga útil de un paquete reensamblado por fragmentos. Esto permite a un atacante desencadenar un kernel panic, resultando en una denega... • https://security.FreeBSD.org/advisories/FreeBSD-SA-23:06.ipv6.asc • CWE-190: Integer Overflow or Wraparound •
CVSS: 10.0EPSS: 0%CPEs: 19EXPL: 0CVE-2023-3326 – Network authentication attack via pam_krb5
https://notcve.org/view.php?id=CVE-2023-3326
22 Jun 2023 — 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 p... • https://security.FreeBSD.org/advisories/FreeBSD-SA-23:04.pam_krb5.asc • CWE-287: Improper Authentication CWE-303: Incorrect Implementation of Authentication Algorithm •
CVSS: 6.8EPSS: 0%CPEs: 18EXPL: 0CVE-2023-0751 – GELI silently omits the keyfile if read from stdin
https://notcve.org/view.php?id=CVE-2023-0751
08 Feb 2023 — 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: 7.8EPSS: 0%CPEs: 1EXPL: 0CVE-2020-10565
https://notcve.org/view.php?id=CVE-2020-10565
14 Mar 2020 — grub2-bhyve, as used in FreeBSD bhyve before revision 525916 2020-02-12, does not validate the address provided as part of a memrw command (read_* or write_*) by a guest through a grub2.cfg file. This allows an untrusted guest to perform arbitrary read or write operations in the context of the grub-bhyve process, resulting in code execution as root on the host OS. grub2-bhyve, como es usado en FreeBSD bhyve anterior a revisión 525916 12-02-2020, no comprueba la dirección proporcionada como parte de un coman... • https://svnweb.freebsd.org/ports?view=revision&revision=525916 • CWE-119: Improper Restriction of Operations within the Bounds of a Memory Buffer •