CVSS: 7.8EPSS: 0%CPEs: 4EXPL: 11CVE-2019-18634 – Sudo 1.8.25p - 'pwfeedback' Buffer Overflow (PoC)
https://notcve.org/view.php?id=CVE-2019-18634
In Sudo before 1.8.26, if pwfeedback is enabled in /etc/sudoers, users can trigger a stack-based buffer overflow in the privileged sudo process. (pwfeedback is a default setting in Linux Mint and elementary OS; however, it is NOT the default for upstream and many other packages, and would exist only if enabled by an administrator.) The attacker needs to deliver a long string to the stdin of getln() in tgetpass.c. En Sudo anterior a la versión 1.8.26, si pwfeedback está habilitado en / etc / sudoers, los usuarios pueden desencadenar un desbordamiento de búfer basado en pila en el proceso de sudo privilegiado. (pwfeedback es una configuración predeterminada en Linux Mint y sistema operativo elemental; sin embargo, NO es el valor predeterminado para paquetes ascendentes y muchos otros, y existiría solo si lo habilita un administrador). • https://www.exploit-db.com/exploits/47995 https://www.exploit-db.com/exploits/48052 https://github.com/Plazmaz/CVE-2019-18634 https://github.com/aesophor/CVE-2019-18634 https://github.com/N1et/CVE-2019-18634 https://github.com/ptef/CVE-2019-18634 https://github.com/paras1te-x/CVE-2019-18634 https://github.com/chanbakjsd/CVE-2019-18634 https://github.com/DDayLuong/CVE-2019-18634 http://lists.opensuse.org/opensuse-security-announce/2020-02/msg00029.html http://pa • CWE-121: Stack-based Buffer Overflow CWE-787: Out-of-bounds Write •
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: 7.0EPSS: 0%CPEs: 1EXPL: 1CVE-2019-18684
https://notcve.org/view.php?id=CVE-2019-18684
Sudo through 1.8.29 allows local users to escalate to root if they have write access to file descriptor 3 of the sudo process. This occurs because of a race condition between determining a uid, and the setresuid and openat system calls. The attacker can write "ALL ALL=(ALL) NOPASSWD:ALL" to /proc/#####/fd/3 at a time when Sudo is prompting for a password. NOTE: This has been disputed due to the way Linux /proc works. It has been argued that writing to /proc/#####/fd/3 would only be viable if you had permission to write to /etc/sudoers. • https://gist.github.com/oxagast/51171aa161074188a11d96cbef884bbd • CWE-362: Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition') •
CVSS: 9.0EPSS: 32%CPEs: 47EXPL: 21CVE-2019-14287 – sudo 1.8.27 - Security Bypass
https://notcve.org/view.php?id=CVE-2019-14287
In Sudo before 1.8.28, an attacker with access to a Runas ALL sudoer account can bypass certain policy blacklists and session PAM modules, and can cause incorrect logging, by invoking sudo with a crafted user ID. For example, this allows bypass of !root configuration, and USER= logging, for a "sudo -u \#$((0xffffffff))" command. En Sudo anteriores a 1.8.28, un atacante con acceso a una cuenta Runas ALL sudoer puede omitir ciertas listas negras de políticas y módulos PAM de sesión, y puede causar un registro incorrecto, mediante la invocación sudo con un ID de usuario creado. Por ejemplo, esto permite la omisión de la configuración root y el registro USER= para un comando "sudo -u \#$((0xffffffff))". • https://www.exploit-db.com/exploits/47502 https://github.com/n0w4n/CVE-2019-14287 https://github.com/shallvhack/Sudo-Security-Bypass-CVE-2019-14287 https://github.com/CMNatic/Dockerized-CVE-2019-14287 https://github.com/axax002/sudo-vulnerability-CVE-2019-14287 https://github.com/N3rdyN3xus/CVE-2019-14287 https://github.com/DewmiApsara/CVE-2019-14287 https://github.com/MariliaMeira/CVE-2019-14287 https://github.com/edsonjt81/CVE-2019-14287- https://github.com/SachinthaDeSilva-cmd& • CWE-267: Privilege Defined With Unsafe Actions CWE-755: Improper Handling of Exceptional Conditions •
CVSS: 7.0EPSS: 0%CPEs: 66EXPL: 0CVE-2015-8239
https://notcve.org/view.php?id=CVE-2015-8239
The SHA-2 digest support in the sudoers plugin in sudo after 1.8.7 allows local users with write permissions to parts of the called command to replace them before it is executed. La compatibilidad con SHA-2 digest en el plugin sudoers en sudo, en versiones posteriores a la 1.8.7, permite que usuarios locales con permisos de escritura en partes del comando llamado los reemplace antes de ejecutarlo. • http://www.openwall.com/lists/oss-security/2015/11/18/22 https://bugzilla.redhat.com/show_bug.cgi?id=1283635 https://www.sudo.ws/repos/sudo/rev/0cd3cc8fa195 https://www.sudo.ws/repos/sudo/rev/24a3d9215c64 https://www.sudo.ws/repos/sudo/rev/397722cdd7ec • CWE-362: Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition') •