CVSS: 5.3EPSS: 0%CPEs: 56EXPL: 0CVE-2018-20685 – openssh: scp client improper directory name validation
https://notcve.org/view.php?id=CVE-2018-20685
In OpenSSH 7.9, scp.c in the scp client allows remote SSH servers to bypass intended access restrictions via the filename of . or an empty filename. The impact is modifying the permissions of the target directory on the client side. En OpenSSH 7.9, scp.c en el cliente scp permite que los servidores SSH omitan las restricciones de acceso planeadas mediante un nombre de archivo "." o un nombre de archivo vacío. El impacto consiste en modificar los permisos del directorio objetivo en el lado del cliente. • http://www.securityfocus.com/bid/106531 https://access.redhat.com/errata/RHSA-2019:3702 https://cert-portal.siemens.com/productcert/pdf/ssa-412672.pdf https://cvsweb.openbsd.org/cgi-bin/cvsweb/src/usr.bin/ssh/scp.c.diff?r1=1.197&r2=1.198&f=h https://github.com/openssh/openssh-portable/commit/6010c0303a422a9c5fa8860c061bf7105eb7f8b2 https://lists.debian.org/debian-lts-announce/2019/03/msg00030.html https://security.gentoo.org/glsa/201903-16 https://security.gentoo.org/glsa/202007- • CWE-20: Improper Input Validation CWE-863: Incorrect Authorization •
CVSS: 5.3EPSS: 0%CPEs: 7EXPL: 0CVE-2018-15919
https://notcve.org/view.php?id=CVE-2018-15919
Remotely observable behaviour in auth-gss2.c in OpenSSH through 7.8 could be used by remote attackers to detect existence of users on a target system when GSS2 is in use. NOTE: the discoverer states 'We understand that the OpenSSH developers do not want to treat such a username enumeration (or "oracle") as a vulnerability.' Un comportamiento observable de forma remota en auth-gss2.c en OpenSSH hasta la versión 7.8 podría ser empleado por atacantes remotos para detectar la existencia de usuarios en un sistema objetivo cuando se está empleando GSS2. NOTA: el descubridor indica que "entendemos que los desarrolladores de OpenSSH no quieran tratar tal listado de nombres de usuario (u "oráculo") como una vulnerabilidad". • http://seclists.org/oss-sec/2018/q3/180 http://www.securityfocus.com/bid/105163 https://security.netapp.com/advisory/ntap-20181221-0001 • CWE-200: Exposure of Sensitive Information to an Unauthorized Actor •
CVSS: 5.3EPSS: 2%CPEs: 32EXPL: 18CVE-2018-15473 – OpenSSH < 7.7 - User Enumeration
https://notcve.org/view.php?id=CVE-2018-15473
OpenSSH through 7.7 is prone to a user enumeration vulnerability due to not delaying bailout for an invalid authenticating user until after the packet containing the request has been fully parsed, related to auth2-gss.c, auth2-hostbased.c, and auth2-pubkey.c. OpenSSH hasta la versión 7.7 es propenso a una vulnerabilidad de enumeración de usuarios debido a que no retrasa el rescate de un usuario de autenticación no válido hasta que el paquete que contiene la petición haya sido analizado completamente. Esto está relacionado con auth2-gss.c, auth2-hostbased.c, y auth2-pubkey.c. A user enumeration vulnerability flaw was found in OpenSSH, though version 7.7. The vulnerability occurs by not delaying bailout for an invalid authenticated user until after the packet containing the request has been fully parsed. • https://www.exploit-db.com/exploits/45939 https://www.exploit-db.com/exploits/45233 https://www.exploit-db.com/exploits/45210 https://github.com/Rhynorater/CVE-2018-15473-Exploit https://github.com/r3dxpl0it/CVE-2018-15473 https://github.com/Sait-Nuri/CVE-2018-15473 https://github.com/LINYIKAI/CVE-2018-15473-exp https://github.com/MrDottt/CVE-2018-15473 https://github.com/yZ1337/CVE-2018-15473 https://github.com/1stPeak/CVE-2018-15473 https://github.com/0xrobiu • CWE-200: Exposure of Sensitive Information to an Unauthorized Actor CWE-362: Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition') •
CVSS: 7.5EPSS: 5%CPEs: 16EXPL: 0CVE-2016-10708 – openssh: Out of sequence NEWKEYS message can allow remote attacker to cause denial of service
https://notcve.org/view.php?id=CVE-2016-10708
sshd in OpenSSH before 7.4 allows remote attackers to cause a denial of service (NULL pointer dereference and daemon crash) via an out-of-sequence NEWKEYS message, as demonstrated by Honggfuzz, related to kex.c and packet.c. sshd en OpenSSH, en versiones anteriores a la 7.4, permite que atacantes remotos provoquen una denegación de servicio (desreferencia de puntero NULL y cierre inesperado del demonio) mediante un mensaje NEWKEYS fuera de secuencia, tal y como demuestra Honggfuzz, relacionado con kex.c y packet.c. • http://blog.swiecki.net/2018/01/fuzzing-tcp-servers.html http://www.securityfocus.com/bid/102780 https://anongit.mindrot.org/openssh.git/commit/?id=28652bca29046f62c7045e933e6b931de1d16737 https://cert-portal.siemens.com/productcert/pdf/ssa-676336.pdf https://kc.mcafee.com/corporate/index?page=content&id=SB10284 https://lists.debian.org/debian-lts-announce/2018/01/msg00031.html https://lists.debian.org/debian-lts-announce/2018/09/msg00010.html https://security.netapp.com/advisory/ntap-20180423 • CWE-20: Improper Input Validation CWE-476: NULL Pointer Dereference •
CVSS: 5.3EPSS: 0%CPEs: 28EXPL: 0CVE-2017-15906 – openssh: Improper write operations in readonly mode allow for zero-length file creation
https://notcve.org/view.php?id=CVE-2017-15906
The process_open function in sftp-server.c in OpenSSH before 7.6 does not properly prevent write operations in readonly mode, which allows attackers to create zero-length files. La función process_open en sftp-server.c en OpenSSH, en versiones anteriores a la 7.6, no evita correctamente las operaciones de escritura en el modo readonly, lo que permite que los atacantes creen archivos de longitud cero. • http://www.securityfocus.com/bid/101552 https://access.redhat.com/errata/RHSA-2018:0980 https://cert-portal.siemens.com/productcert/pdf/ssa-412672.pdf https://github.com/openbsd/src/commit/a6981567e8e215acc1ef690c8dbb30f2d9b00a19 https://lists.debian.org/debian-lts-announce/2018/09/msg00010.html https://security.gentoo.org/glsa/201801-05 https://security.netapp.com/advisory/ntap-20180423-0004 https://www.openssh.com/txt/release-7.6 https://www.oracle.com/security-alerts/cpujan2020.html http • CWE-20: Improper Input Validation CWE-732: Incorrect Permission Assignment for Critical Resource •