CVSS: 7.0EPSS: 0%CPEs: 18EXPL: 0CVE-2021-41617 – openssh: privilege escalation when AuthorizedKeysCommand or AuthorizedPrincipalsCommand are configured
https://notcve.org/view.php?id=CVE-2021-41617
sshd in OpenSSH 6.2 through 8.x before 8.8, when certain non-default configurations are used, allows privilege escalation because supplemental groups are not initialized as expected. Helper programs for AuthorizedKeysCommand and AuthorizedPrincipalsCommand may run with privileges associated with group memberships of the sshd process, if the configuration specifies running the command as a different user. sshd en OpenSSH versiones 6.2 hasta 8.x anteriores a 8.8, cuando son usadas determinadas configuraciones no predeterminadas, permite una escalada de privilegios porque los grupos complementarios no son inicializados como se espera. Los programas de ayuda para AuthorizedKeysCommand y AuthorizedPrincipalsCommand pueden ejecutarse con privilegios asociados a la pertenencia a grupos del proceso sshd, si la configuración especifica la ejecución del comando como un usuario diferente A flaw was found in OpenSSH. Helper programs for AuthorizedKeysCommand and AuthorizedPrincipalsCommand may run with privileges associated with group memberships of the sshd process, if the configuration specifies running the command as a different user. Depending on system configuration, inherited groups may allow AuthorizedKeysCommand/AuthorizedPrincipalsCommand helper programs to gain unintended privileges, potentially leading to local privilege escalation. • https://bugzilla.suse.com/show_bug.cgi?id=1190975 https://lists.debian.org/debian-lts-announce/2023/12/msg00017.html https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/6XJIONMHMKZDTMH6BQR5TNLF2WDCGWED https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/KVI7RWM2JLNMWTOFK6BDUSGNOIPZYPUT https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/W44V2PFQH5YLRN6ZJTVRKAD7CU6CYYET https://security.netapp.com/advisory/ntap-20211014& • CWE-273: Improper Check for Dropped Privileges •
CVSS: 5.3EPSS: 2%CPEs: 5EXPL: 2CVE-2016-20012
https://notcve.org/view.php?id=CVE-2016-20012
OpenSSH through 8.7 allows remote attackers, who have a suspicion that a certain combination of username and public key is known to an SSH server, to test whether this suspicion is correct. This occurs because a challenge is sent only when that combination could be valid for a login session. NOTE: the vendor does not recognize user enumeration as a vulnerability for this product ** EN DISPTUTA ** OpenSSH versiones hasta 8.7, permite a atacantes remotos, que presentan la sospecha de que una determinada combinación de nombre de usuario y clave pública es conocida por un servidor SSH, comprobar si esta sospecha es correcta. Esto ocurre porque es enviado un desafío sólo cuando esa combinación podría ser válida para una sesión de inicio de sesión. NOTA: el proveedor no reconoce la enumeración de usuarios como una vulnerabilidad para este producto • https://github.com/openssh/openssh-portable/blob/d0fffc88c8fe90c1815c6f4097bc8cbcabc0f3dd/auth2-pubkey.c#L261-L265 https://github.com/openssh/openssh-portable/pull/270 https://github.com/openssh/openssh-portable/pull/270#issuecomment-920577097 https://github.com/openssh/openssh-portable/pull/270#issuecomment-943909185 https://rushter.com/blog/public-ssh-keys https://security.netapp.com/advisory/ntap-20211014-0005 https://utcc.utoronto.ca/~cks/space/blog/tech/SSHKeysAreInfoLeak https://www.openwall.com/lists •
CVSS: 7.8EPSS: 0%CPEs: 12EXPL: 3CVE-2020-15778 – openssh: scp allows command injection when using backtick characters in the destination argument
https://notcve.org/view.php?id=CVE-2020-15778
scp in OpenSSH through 8.3p1 allows command injection in the scp.c toremote function, as demonstrated by backtick characters in the destination argument. NOTE: the vendor reportedly has stated that they intentionally omit validation of "anomalous argument transfers" because that could "stand a great chance of breaking existing workflows." ** EN DISPUTA ** scp en OpenSSH versiones hasta 8.3p1 permite una inyección de comandos en la función toremote de scp.c, como lo demuestran los caracteres backtick en el argumento de destino. NOTA: según se informa, el proveedor ha declarado que omite intencionadamente la validación de las "transferencias de argumentos anómalos" porque eso podría "tener grandes posibilidades de romper los flujos de trabajo existentes" A flaw was found in the scp program shipped with the openssh-clients package. An attacker having the ability to scp files to a remote server, could execute arbitrary commands on the remote server by including the command as a part of the filename being copied on the server. This command is run with the permissions of user with which the files were copied on the remote server. • https://github.com/cpandya2909/CVE-2020-15778 https://github.com/Neko-chanQwQ/CVE-2020-15778-Exploit https://github.com/Evan-Zhangyf/CVE-2020-15778 https://access.redhat.com/errata/RHSA-2024:3166 https://news.ycombinator.com/item?id=25005567 https://security.gentoo.org/glsa/202212-06 https://security.netapp.com/advisory/ntap-20200731-0007 https://www.openssh.com/security.html https://access.redhat.com/security/cve/CVE-2020-15778 https://bugzilla.redhat.com/show_bug.cgi?id&# • CWE-77: Improper Neutralization of Special Elements used in a Command ('Command Injection') CWE-78: Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection') •
CVSS: 5.9EPSS: 0%CPEs: 13EXPL: 0CVE-2020-14145 – openssh: Observable discrepancy leading to an information leak in the algorithm negotiation
https://notcve.org/view.php?id=CVE-2020-14145
The client side in OpenSSH 5.7 through 8.4 has an Observable Discrepancy leading to an information leak in the algorithm negotiation. This allows man-in-the-middle attackers to target initial connection attempts (where no host key for the server has been cached by the client). NOTE: some reports state that 8.5 and 8.6 are also affected. El lado del cliente en OpenSSH versiones 5.7 hasta 8.4, presenta una Discrepancia Observable que conlleva a una filtración de información en la negociación del algoritmo. Esto permite a atacantes de tipo man-in-the-middle apuntar a unos intentos iniciales de conexión (donde ninguna clave de host para el servidor ha sido almacenada en caché por parte del cliente) NOTA: algunos informes afirman que las versiones 8.5 y 8.6 también están afectadas. • http://www.openwall.com/lists/oss-security/2020/12/02/1 https://anongit.mindrot.org/openssh.git/commit/?id=b3855ff053f5078ec3d3c653cdaedefaa5fc362d https://docs.ssh-mitm.at/CVE-2020-14145.html https://github.com/openssh/openssh-portable/compare/V_8_3_P1...V_8_4_P1 https://github.com/ssh-mitm/ssh-mitm/blob/master/ssh_proxy_server/plugins/session/cve202014145.py https://security.gentoo.org/glsa/202105-35 https://security.netapp.com/advisory/ntap-20200709-0004 https://www. • CWE-203: Observable Discrepancy •
CVSS: 5.9EPSS: 0%CPEs: 55EXPL: 3CVE-2019-6111 – OpenSSH SCP Client - Write Arbitrary Files
https://notcve.org/view.php?id=CVE-2019-6111
An issue was discovered in OpenSSH 7.9. Due to the scp implementation being derived from 1983 rcp, the server chooses which files/directories are sent to the client. However, the scp client only performs cursory validation of the object name returned (only directory traversal attacks are prevented). A malicious scp server (or Man-in-The-Middle attacker) can overwrite arbitrary files in the scp client target directory. If recursive operation (-r) is performed, the server can manipulate subdirectories as well (for example, to overwrite the .ssh/authorized_keys file). • https://www.exploit-db.com/exploits/46516 https://www.exploit-db.com/exploits/46193 http://lists.opensuse.org/opensuse-security-announce/2019-06/msg00058.html http://www.openwall.com/lists/oss-security/2019/04/18/1 http://www.openwall.com/lists/oss-security/2022/08/02/1 http://www.securityfocus.com/bid/106741 https://access.redhat.com/errata/RHSA-2019:3702 https://bugzilla.redhat.com/show_bug.cgi?id=1677794 https://cert-portal.siemens.com/productcert/pdf/ssa-412672&# • CWE-20: Improper Input Validation CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') •