
CVE-2020-25582
https://notcve.org/view.php?id=CVE-2020-25582
26 Mar 2021 — In FreeBSD 12.2-STABLE before r369334, 11.4-STABLE before r369335, 12.2-RELEASE before p4 and 11.4-RELEASE before p8 when a process, such as jexec(8) or killall(1), calls jail_attach(2) to enter a jail, the jailed root can attach to it using ptrace(2) before the current working directory is changed. En FreeBSD versiones 12.2-STABLE anteriores a r369334, 11.4-STABLE anteriores a r369335, 12.2-RELEASE anteriores a p4 y 11.4-RELEASE anteriores a p8, cuando un proceso, como jexec(8) o killall(1), llama a jail_a... • https://security.FreeBSD.org/advisories/FreeBSD-SA-21:05.jail_chdir.asc • CWE-362: Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition') •

CVE-2020-25581
https://notcve.org/view.php?id=CVE-2020-25581
26 Mar 2021 — In FreeBSD 12.2-STABLE before r369312, 11.4-STABLE before r369313, 12.2-RELEASE before p4 and 11.4-RELEASE before p8 due to a race condition in the jail_remove(2) implementation, it may fail to kill some of the processes. En FreeBSD versiones 12.2-STABLE anteriores a r369312, 11.4-STABLE anteriores a r369313, 12.2-RELEASE anteriores a p4 y 11.4-RELEASE anteriores a p8, debido a una condición de carrera en la implementación de jail_remove(2), puede cometer un fallo al eliminar algunos de los procesos. • https://security.FreeBSD.org/advisories/FreeBSD-SA-21:04.jail_remove.asc • CWE-362: Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition') •

CVE-2020-25580
https://notcve.org/view.php?id=CVE-2020-25580
26 Mar 2021 — In FreeBSD 12.2-STABLE before r369346, 11.4-STABLE before r369345, 12.2-RELEASE before p4 and 11.4-RELEASE before p8 a regression in the login.access(5) rule processor has the effect of causing rules to fail to match even when they should not. This means that rules denying access may be ignored. En FreeBSD versiones 12.2-STABLE anteriores a r369346, 11.4-STABLE anteriores a r369345, 12.2-RELEASE anteriores a p4 y 11.4-RELEASE anteriores a p8, una regresión en el procesador de reglas login.access(5) tiene el... • https://security.FreeBSD.org/advisories/FreeBSD-SA-21:03.pam_login_access.asc • CWE-697: Incorrect Comparison •

CVE-2020-7467
https://notcve.org/view.php?id=CVE-2020-7467
26 Mar 2021 — In FreeBSD 12.2-STABLE before r365767, 11.4-STABLE before r365769, 12.1-RELEASE before p10, 11.4-RELEASE before p4 and 11.3-RELEASE before p14 a number of AMD virtualization instructions operate on host physical addresses, are not subject to nested page table translation, and guest use of these instructions was not trapped. En FreeBSD versiones 12.2-STABLE anteriores a r365767, 11.4-STABLE anteriores a r365769, 12.1-RELEASE anteriores a p10, 11.4-RELEASE anteriores a p4 y 11.3-RELEASE anteriores a p14, vari... • https://security.FreeBSD.org/advisories/FreeBSD-SA-20:29.bhyve_svm.asc • CWE-269: Improper Privilege Management •

CVE-2021-3449 – NULL pointer deref in signature_algorithms processing
https://notcve.org/view.php?id=CVE-2021-3449
25 Mar 2021 — An OpenSSL TLS server may crash if sent a maliciously crafted renegotiation ClientHello message from a client. If a TLSv1.2 renegotiation ClientHello omits the signature_algorithms extension (where it was present in the initial ClientHello), but includes a signature_algorithms_cert extension then a NULL pointer dereference will result, leading to a crash and a denial of service attack. A server is only vulnerable if it has TLSv1.2 and renegotiation enabled (which is the default configuration). OpenSSL TLS c... • https://github.com/riptl/cve-2021-3449 • CWE-476: NULL Pointer Dereference •

CVE-2021-3450 – CA certificate check bypass with X509_V_FLAG_X509_STRICT
https://notcve.org/view.php?id=CVE-2021-3450
25 Mar 2021 — The X509_V_FLAG_X509_STRICT flag enables additional security checks of the certificates present in a certificate chain. It is not set by default. Starting from OpenSSL version 1.1.1h a check to disallow certificates in the chain that have explicitly encoded elliptic curve parameters was added as an additional strict check. An error in the implementation of this check meant that the result of a previous check to confirm that certificates in the chain are valid CA certificates was overwritten. This effectivel... • http://www.openwall.com/lists/oss-security/2021/03/27/1 • CWE-295: Improper Certificate Validation •

CVE-2020-7468 – FreeBSD FTPD Improper Handling of Exceptional Conditions Privilege Escalation Vulnerability
https://notcve.org/view.php?id=CVE-2020-7468
15 Dec 2020 — In FreeBSD 12.2-STABLE before r365772, 11.4-STABLE before r365773, 12.1-RELEASE before p10, 11.4-RELEASE before p4 and 11.3-RELEASE before p14 a ftpd(8) bug in the implementation of the file system sandbox, combined with capabilities available to an authenticated FTP user, can be used to escape the file system restriction configured in ftpchroot(5). Moreover, the bug allows a malicious client to gain root privileges. En FreeBSD versiones 12.2-STABLE anteriores a r365772, 11.4-STABLE anteriores a r365773, 12... • https://security.FreeBSD.org/advisories/FreeBSD-SA-20:30.ftpd.asc •

CVE-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 •

CVE-2020-10566
https://notcve.org/view.php?id=CVE-2020-10566
14 Mar 2020 — grub2-bhyve, as used in FreeBSD bhyve before revision 525916 2020-02-12, mishandles font loading by a guest through a grub2.cfg file, leading to a buffer overflow. grub2-bhyve, como es usado en FreeBSD bhyve anterior a revisión 525916 12-02-2020, maneja inapropiadamente una carga de fuentes por parte de un invitado mediante un archivo grub2.cfg, conllevando a un desbordamiento de búfer. • https://svnweb.freebsd.org/ports?view=revision&revision=525916 • CWE-120: Buffer Copy without Checking Size of Input ('Classic Buffer Overflow') •

CVE-2013-4854 – ISC BIND rdata Denial Of Service Vulnerability
https://notcve.org/view.php?id=CVE-2013-4854
26 Jul 2013 — The RFC 5011 implementation in rdata.c in ISC BIND 9.7.x and 9.8.x before 9.8.5-P2, 9.8.6b1, 9.9.x before 9.9.3-P2, and 9.9.4b1, and DNSco BIND 9.9.3-S1 before 9.9.3-S1-P1 and 9.9.4-S1b1, allows remote attackers to cause a denial of service (assertion failure and named daemon exit) via a query with a malformed RDATA section that is not properly handled during construction of a log message, as exploited in the wild in July 2013. La implementación RFC en rdata.c en ISC BIND 9.7.x y 9.8.x anterior a 9.8.5-P2, ... • http://archives.neohapsis.com/archives/bugtraq/2013-08/0030.html •