CVE-2020-6097
https://notcve.org/view.php?id=CVE-2020-6097
An exploitable denial of service vulnerability exists in the atftpd daemon functionality of atftp 0.7.git20120829-3.1+b1. A specially crafted sequence of RRQ-Multicast requests trigger an assert() call resulting in denial-of-service. An attacker can send a sequence of malicious packets to trigger this vulnerability. Se presenta una vulnerabilidad de denegación de servicio explotable en la funcionalidad del demonio de atftpd de atftp versión 0.7.git20120829-3.1+b1. Una secuencia especialmente diseñada de peticiones RRQ-Multicast desencadena una llamada a la función assert() que resulta en una denegación de servicio. • http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00058.html https://lists.debian.org/debian-lts-announce/2021/11/msg00014.html https://talosintelligence.com/vulnerability_reports/TALOS-2020-1029 • CWE-617: Reachable Assertion •
CVE-2020-25219 – libproxy: uncontrolled recursion via an infinite stream response leading to stack exhaustion
https://notcve.org/view.php?id=CVE-2020-25219
url::recvline in url.cpp in libproxy 0.4.x through 0.4.15 allows a remote HTTP server to trigger uncontrolled recursion via a response composed of an infinite stream that lacks a newline character. This leads to stack exhaustion. La función url::recvline en el archivo url.cpp en libproxy versiones 0.4.x hasta 0.4.15, permite a un servidor HTTP remoto activar una recursividad no controlada por medio de una respuesta compuesta por una transmisión infinita que carece de un carácter newline. Esto conlleva al agotamiento de la pila. A flaw was found in libproxy in versions 0.4 through 0.4.15. • http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00030.html http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00033.html https://github.com/libproxy/libproxy/issues/134 https://lists.debian.org/debian-lts-announce/2020/09/msg00012.html https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/CNID6EZVOVH7EZB7KFU2EON54CFDIVUR https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/JF5JSONJNO64ARWRVOS6K6HSIPHEF3H2 https://lists • CWE-674: Uncontrolled Recursion •
CVE-2020-25212 – kernel: TOCTOU mismatch in the NFS client code
https://notcve.org/view.php?id=CVE-2020-25212
A TOCTOU mismatch in the NFS client code in the Linux kernel before 5.8.3 could be used by local attackers to corrupt memory or possibly have unspecified other impact because a size check is in fs/nfs/nfs4proc.c instead of fs/nfs/nfs4xdr.c, aka CID-b4487b935452. Una discrepancia de TOCTOU en el código del cliente NFS en el kernel de Linux versiones anteriores a 5.8.3, podría ser usada por atacantes locales para dañar la memoria o posiblemente tener otro impacto no especificado porque una comprobación de tamaño se encuentra en el archivo fs/nfs/nfs4proc.c en lugar de fs/nfs/nfs4xdr.c, también se conoce como CID-b4487b935452. A flaw was found in the NFSv4 implementation where when mounting a remote attacker controlled server it could return specially crafted response allow for local memory corruption and possibly privilege escalation. • http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00021.html http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00035.html http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00042.html https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.8.3 https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=b4487b93545214a9db8cbf32e86411677b0cca21 https://lists.debian.org/debian-lts-announce/2020/09/msg00025.html https://lists.debian.org • CWE-367: Time-of-check Time-of-use (TOCTOU) Race Condition CWE-787: Out-of-bounds Write •
CVE-2020-14342
https://notcve.org/view.php?id=CVE-2020-14342
It was found that cifs-utils' mount.cifs was invoking a shell when requesting the Samba password, which could be used to inject arbitrary commands. An attacker able to invoke mount.cifs with special permission, such as via sudo rules, could use this flaw to escalate their privileges. Se detectó que mount.cifs de cifs-utils estaba invocando un shell al requerir la contraseña de Samba, que podría ser usado para inyectar comandos arbitrarios. Un atacante capaz de invocar mount.cifs con un permiso especial, como por medio de reglas sudo, podría usar este fallo para escalar sus privilegios. • http://lists.opensuse.org/opensuse-security-announce/2020-09/msg00109.html https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2020-14342 https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/DUMRICFXJVCBBOSKZSKT3HFVQM6VPJU3 https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/JBNFSTJOQWVPFZAUJNNMAPY45PW5RTTE https://lists.samba.org/archive/samba-technical/2020-September/135747.html https://security.gentoo.org/glsa/202009-16 • 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') •
CVE-2020-14386 – kernel: memory corruption in net/packet/af_packet.c leads to elevation of privilege
https://notcve.org/view.php?id=CVE-2020-14386
A flaw was found in the Linux kernel before 5.9-rc4. Memory corruption can be exploited to gain root privileges from unprivileged processes. The highest threat from this vulnerability is to data confidentiality and integrity. Se encontró un fallo en el kernel de Linux versiones anteriores a 5.9-rc4. Una corrupción de la memoria puede ser explotada para conseguir privilegios root de procesos no privilegiados. • http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00021.html http://packetstormsecurity.com/files/159565/Kernel-Live-Patch-Security-Notice-LSN-0072-1.html http://www.openwall.com/lists/oss-security/2021/09/17/2 http://www.openwall.com/lists/oss-security/2021/09/17/4 http://www.openwall.com/lists/oss-security/2021/09/21/1 https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2020-14386 https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit • CWE-250: Execution with Unnecessary Privileges CWE-787: Out-of-bounds Write •