CVSS: 7.8EPSS: 0%CPEs: 2EXPL: 1CVE-2017-20002
https://notcve.org/view.php?id=CVE-2017-20002
The Debian shadow package before 1:4.5-1 for Shadow incorrectly lists pts/0 and pts/1 as physical terminals in /etc/securetty. This allows local users to login as password-less users even if they are connected by non-physical means such as SSH (hence bypassing PAM's nullok_secure configuration). This notably affects environments such as virtual machines automatically generated with a default blank root password, allowing all local users to escalate privileges. El paquete shadow de Debian versiones anteriores a 4.5-1 para Shadow, enumera incorrectamente pts/0 y pts/1 como terminales físicos en /etc/securetty. Esto permite a usuarios locales iniciar sesión como usuarios sin contraseña incluso si están conectados por medios no físicos como SSH (por lo tanto, omitiendo una configuración nullok_secure de PAM). • https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=877374 https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=914957 https://lists.debian.org/debian-lts-announce/2021/03/msg00020.html • CWE-269: Improper Privilege Management •
CVSS: 4.7EPSS: 0%CPEs: 8EXPL: 0CVE-2013-4235
https://notcve.org/view.php?id=CVE-2013-4235
shadow: TOCTOU (time-of-check time-of-use) race condition when copying and removing directory trees shadow: condición de carrera TOCTOU (de tiempo de comprobación y tiempo de uso) cuando se copia y elimina árboles de directorio. • https://access.redhat.com/security/cve/cve-2013-4235 https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2013-4235 https://lists.apache.org/thread.html/rf9fa47ab66495c78bb4120b0754dd9531ca2ff0430f6685ac9b07772%40%3Cdev.mina.apache.org%3E https://security-tracker.debian.org/tracker/CVE-2013-4235 https://security.gentoo.org/glsa/202210-26 • CWE-367: Time-of-check Time-of-use (TOCTOU) Race Condition •
CVSS: 7.8EPSS: 0%CPEs: 8EXPL: 1CVE-2005-4890
https://notcve.org/view.php?id=CVE-2005-4890
There is a possible tty hijacking in shadow 4.x before 4.1.5 and sudo 1.x before 1.7.4 via "su - user -c program". The user session can be escaped to the parent session by using the TIOCSTI ioctl to push characters into the input buffer to be read by the next process. Se presenta un posible secuestro de tty en shadow versiones 4.x anteriores a 4.1.5 y sudo versiones 1.x anteriores a 1.7.4 por medio de "su - user -c program". La sesión de usuario puede ser escapada a la sesión principal mediante el uso de la ioctl TIOCSTI para insertar caracteres en el búfer de entrada para ser leídos por el siguiente proceso. • http://www.openwall.com/lists/oss-security/2012/11/06/8 http://www.openwall.com/lists/oss-security/2013/05/20/3 http://www.openwall.com/lists/oss-security/2013/11/28/10 http://www.openwall.com/lists/oss-security/2013/11/29/5 http://www.openwall.com/lists/oss-security/2014/10/20/9 http://www.openwall.com/lists/oss-security/2014/10/21/1 http://www.openwall.com/lists/oss-security/2014/12/15/5 http://www.openwall.com/lists/oss-security/201 • CWE-20: Improper Input Validation •
CVSS: 9.8EPSS: 0%CPEs: 2EXPL: 0CVE-2017-12424
https://notcve.org/view.php?id=CVE-2017-12424
In shadow before 4.5, the newusers tool could be made to manipulate internal data structures in ways unintended by the authors. Malformed input may lead to crashes (with a buffer overflow or other memory corruption) or other unspecified behaviors. This crosses a privilege boundary in, for example, certain web-hosting environments in which a Control Panel allows an unprivileged user account to create subaccounts. En las versiones de Shadow anteriores a la 4.5, la herramienta newusers podría utilizarse para manipular estructuras de datos internas de formas no permitidas por los desarrolladores. Las entradas manipuladas podrían llevar a caídas (con un desbordamiento de búfer u otros tipos de corrupción de memoria) o a otro tipo de comportamiento sin especificar. • https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=756630 https://bugs.launchpad.net/ubuntu/+source/shadow/+bug/1266675 https://github.com/shadow-maint/shadow/commit/954e3d2e7113e9ac06632aee3c69b8d818cc8952 https://lists.debian.org/debian-lts-announce/2021/03/msg00020.html https://security.gentoo.org/glsa/201710-16 • CWE-119: Improper Restriction of Operations within the Bounds of a Memory Buffer •
CVSS: 6.4EPSS: 0%CPEs: 1EXPL: 0CVE-2011-0721
https://notcve.org/view.php?id=CVE-2011-0721
Multiple CRLF injection vulnerabilities in (1) chfn and (2) chsh in shadow 1:4.1.4 allow local users to add new users or groups to /etc/passwd via the GECOS field. Múltiples vulnerabilidades de inyección CRLF en (1) chfn y (2) chsh sobre shadow 1:4.1.4 permiten agregar nuevos usuarios o grupos a /etc/passwd a los usuarios locales a través del campo GECOS. • http://osvdb.org/70895 http://secunia.com/advisories/42505 http://secunia.com/advisories/43345 http://slackware.com/security/viewer.php?l=slackware-security&y=2011&m=slackware-security.380014 http://www.debian.org/security/2011/dsa-2164 http://www.securityfocus.com/bid/46426 http://www.ubuntu.com/usn/USN-1065-1 http://www.vupen.com/english/advisories/2011/0396 http://www.vupen.com/english/advisories/2011/0398 http://www.vupen.com/english/advisories/2011/0773 https:& • CWE-20: Improper Input Validation •