CVSS: 5.3EPSS: 0%CPEs: 330EXPL: 0CVE-2020-26139 – kernel: Forwarding EAPOL from unauthenticated wifi client
https://notcve.org/view.php?id=CVE-2020-26139
An issue was discovered in the kernel in NetBSD 7.1. An Access Point (AP) forwards EAPOL frames to other clients even though the sender has not yet successfully authenticated to the AP. This might be abused in projected Wi-Fi networks to launch denial-of-service attacks against connected clients and makes it easier to exploit other vulnerabilities in connected clients. Se detectó un problema en el kernel en NetBSD versión 7.1. Un punto de acceso (AP) reenvía tramas EAPOL a otros clientes aunque el remitente aún no se haya autenticado con éxito en el AP. • http://www.openwall.com/lists/oss-security/2021/05/11/12 https://cert-portal.siemens.com/productcert/pdf/ssa-913875.pdf https://github.com/vanhoefm/fragattacks/blob/master/SUMMARY.md https://lists.debian.org/debian-lts-announce/2021/06/msg00019.html https://lists.debian.org/debian-lts-announce/2021/06/msg00020.html https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-wifi-faf-22epcEWu https://www.arista.com/en/support/advisories-notices/security-advisories/12602-s • CWE-287: Improper Authentication CWE-829: Inclusion of Functionality from Untrusted Control Sphere •
CVSS: 9.8EPSS: 0%CPEs: 1EXPL: 0CVE-2017-1000374
https://notcve.org/view.php?id=CVE-2017-1000374
A flaw exists in NetBSD's implementation of the stack guard page that allows attackers to bypass it resulting in arbitrary code execution using certain setuid binaries. This affects NetBSD 7.1 and possibly earlier versions. Existe un error en la implementación de NetBSD de la página stack guard que permite que los atacantes la omitan, lo que resulta en la ejecución de código arbitrario mediante el uso de ciertos binarios setuid. Esto afecta a NetBSD 7.1 y posiblemente a versiones anteriores. • http://www.securityfocus.com/bid/99176 https://www.qualys.com/2017/06/19/stack-clash/stack-clash.txt •
CVSS: 9.8EPSS: 0%CPEs: 1EXPL: 0CVE-2017-1000378
https://notcve.org/view.php?id=CVE-2017-1000378
The NetBSD qsort() function is recursive, and not randomized, an attacker can construct a pathological input array of N elements that causes qsort() to deterministically recurse N/4 times. This allows attackers to consume arbitrary amounts of stack memory and manipulate stack memory to assist in arbitrary code execution attacks. This affects NetBSD 7.1 and possibly earlier versions. La función qsort() de NetBSD es recursiva y no aleatorizada, por lo que un atacante puede construir un array de entrada patológica de elementos N que provoca que qsort() se repita inevitablemente N/4 veces. Esto permite que los atacantes consuman cantidades de memoria de pila arbitrarias y manipulen la memoria de pila para ayudar en los ataques de ejecución de código arbitrario. • http://cvsweb.netbsd.org/bsdweb.cgi/src/lib/libc/stdlib/qsort.c?rev=1.23&content-type=text/x-cvsweb-markup http://www.securityfocus.com/bid/99255 https://www.qualys.com/2017/06/19/stack-clash/stack-clash.txt • CWE-400: Uncontrolled Resource Consumption •
CVSS: 9.8EPSS: 2%CPEs: 1EXPL: 2CVE-2017-1000375 – NetBSD - 'Stack Clash' (PoC)
https://notcve.org/view.php?id=CVE-2017-1000375
NetBSD maps the run-time link-editor ld.so directly below the stack region, even if ASLR is enabled, this allows attackers to more easily manipulate memory leading to arbitrary code execution. This affects NetBSD 7.1 and possibly earlier versions. NetBSD asigna el editor de enlace del tiempo de ejecución del archivo ld.so directamente debajo de la región stack, incluso si ASLR está habilitada, esto permite a los atacantes manipular más fácilmente la memoria, lo que conlleva a la ejecución de código arbitraria. Esto afecta a NetBSD versión 7.1 y anteriores. • https://www.exploit-db.com/exploits/42272 http://www.securityfocus.com/bid/99257 https://www.qualys.com/2017/06/19/stack-clash/stack-clash.txt • CWE-119: Improper Restriction of Operations within the Bounds of a Memory Buffer •
CVSS: 5.0EPSS: 97%CPEs: 147EXPL: 1CVE-2014-3566 – SSL/TLS: Padding Oracle On Downgraded Legacy Encryption attack
https://notcve.org/view.php?id=CVE-2014-3566
The SSL protocol 3.0, as used in OpenSSL through 1.0.1i and other products, uses nondeterministic CBC padding, which makes it easier for man-in-the-middle attackers to obtain cleartext data via a padding-oracle attack, aka the "POODLE" issue. El protocolo SSL 3.0, utilizado en OpenSSL hasta 1.0.1i y otros productos, utiliza relleno (padding) CBC no determinístico, lo que facilita a los atacantes man-in-the-middle obtener datos de texto plano a través de un ataque de relleno (padding) oracle, también conocido como el problema "POODLE". A flaw was found in the way SSL 3.0 handled padding bytes when decrypting messages encrypted using block ciphers in cipher block chaining (CBC) mode. This flaw allows a man-in-the-middle (MITM) attacker to decrypt a selected byte of a cipher text in as few as 256 tries if they are able to force a victim application to repeatedly send the same data over newly created SSL 3.0 connections. • https://github.com/mikesplain/CVE-2014-3566-poodle-cookbook ftp://ftp.netbsd.org/pub/NetBSD/security/advisories/NetBSD-SA2014-015.txt.asc http://advisories.mageia.org/MGASA-2014-0416.html http://aix.software.ibm.com/aix/efixes/security/openssl_advisory11.asc http://archives.neohapsis.com/archives/bugtraq/2014-10/0101.html http://archives.neohapsis.com/archives/bugtraq/2014-10/0103.html http://askubuntu.com/questions/537196/how-do-i-patch-workaround-sslv3-poodle-vulnerability-cve-2014-3566 http& • CWE-310: Cryptographic Issues CWE-757: Selection of Less-Secure Algorithm During Negotiation ('Algorithm Downgrade') •