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: 4.4EPSS: 0%CPEs: 41EXPL: 0CVE-2020-10732 – kernel: uninitialized kernel data leak in userspace coredumps
https://notcve.org/view.php?id=CVE-2020-10732
A flaw was found in the Linux kernel's implementation of Userspace core dumps. This flaw allows an attacker with a local account to crash a trivial program and exfiltrate private kernel data. Se encontró un fallo en la implementación de los volcados de núcleo del Userspace del kernel de Linux. Este fallo permite a un atacante con una cuenta local bloquear un programa trivial y exfiltrar datos privados del kernel A flaw was found in the Linux kernel’s implementation of Userspace core dumps. This flaw allows an attacker with a local account to crash a trivial program and exfiltrate private kernel data. • http://lists.opensuse.org/opensuse-security-announce/2020-06/msg00022.html http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00008.html https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2020-10732 https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git/commit/?id=aca969cacf07f41070d788ce2b8ca71f09d5207d https://github.com/google/kmsan/issues/76 https://github.com/ruscur/linux/commit/a95cdec9fa0c08e6eeb410d461c03af8fd1fef0a https://lore.kernel.org/lkml/CAG_fn=VZZ7yUxtOGzuTLkr7wmfXWtKK9BHHYawj • CWE-908: Use of Uninitialized Resource •
CVSS: 7.4EPSS: 5%CPEs: 79EXPL: 0CVE-2020-13817 – ntp: ntpd using highly predictable transmit timestamps could result in time change or DoS
https://notcve.org/view.php?id=CVE-2020-13817
ntpd in ntp before 4.2.8p14 and 4.3.x before 4.3.100 allows remote attackers to cause a denial of service (daemon exit or system time change) by predicting transmit timestamps for use in spoofed packets. The victim must be relying on unauthenticated IPv4 time sources. There must be an off-path attacker who can query time from the victim's ntpd instance. ntpd en ntp versiones anteriores a 4.2.8p14 y versiones 4.3.x versiones anteriores a 4.3.100, permite a atacantes remotos causar una denegación de servicio (salida del demonio o cambio de hora del sistema) mediante la predicción de las marcas de tiempo de transmisión para su uso en paquetes falsificados. La víctima debe confiar en fuentes de tiempo IPv4 no autenticadas. Debe haber un atacante fuera de la ruta que pueda consultar el tiempo desde la instancia ntpd de la víctima A high-performance ntpd instance that gets its time from unauthenticated IPv4 time sources may be vulnerable to an off-path attacker who can query time from the victim's ntpd instance. • http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00005.html http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00044.html http://support.ntp.org/bin/view/Main/NtpBug3596 https://bugs.ntp.org/show_bug.cgi?id=3596 https://security.gentoo.org/glsa/202007-12 https://security.netapp.com/advisory/ntap-20200625-0004 https://www.oracle.com/security-alerts/cpujan2022.html https://access.redhat.com/security/cve/CVE-2020-13817 https://bugzilla.redhat.com/show_bug& • CWE-330: Use of Insufficiently Random Values CWE-358: Improperly Implemented Security Check for Standard •
CVSS: 6.7EPSS: 0%CPEs: 4EXPL: 0CVE-2020-13776 – systemd: Mishandles numerical usernames beginning with decimal digits or 0x followed by hexadecimal digits
https://notcve.org/view.php?id=CVE-2020-13776
systemd through v245 mishandles numerical usernames such as ones composed of decimal digits or 0x followed by hex digits, as demonstrated by use of root privileges when privileges of the 0x0 user account were intended. NOTE: this issue exists because of an incomplete fix for CVE-2017-1000082. systemd versiones hasta v245 maneja inapropiadamente los nombres de usuario numéricos, tales como los compuestos por dígitos decimales o 0x seguidos de dígitos hexadecimales, como es demostrado por el uso de privilegios root cuando era previsto privilegios de la cuenta de usuario 0x0. NOTA: este problema se presenta debido a una corrección incompleta para CVE-2017-1000082. A flaw was found in systemd, where it mishandles numerical usernames beginning with decimal digits, or "0x" followed by hexadecimal digits. When the usernames are used by systemd, for example in service units, an unexpected user may be used instead. • https://github.com/systemd/systemd/issues/15985 https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/IYGLFEKG45EYBJ7TPQMLWROWPTZBEU63 https://security.netapp.com/advisory/ntap-20200611-0003 https://access.redhat.com/security/cve/CVE-2020-13776 https://bugzilla.redhat.com/show_bug.cgi?id=1845534 • CWE-269: Improper Privilege Management CWE-440: Expected Behavior Violation •