CVSS: 10.0EPSS: 97%CPEs: 6EXPL: 12CVE-2020-7247 – OpenSMTPD Remote Code Execution Vulnerability
https://notcve.org/view.php?id=CVE-2020-7247
smtp_mailaddr in smtp_session.c in OpenSMTPD 6.6, as used in OpenBSD 6.6 and other products, allows remote attackers to execute arbitrary commands as root via a crafted SMTP session, as demonstrated by shell metacharacters in a MAIL FROM field. This affects the "uncommented" default configuration. The issue exists because of an incorrect return value upon failure of input validation. La función smtp_mailaddr en el archivo smtp_session.c en OpenSMTPD versión 6.6, como es usado en OpenBSD versión 6.6 y otros productos, permite a atacantes remotos ejecutar comandos arbitrarios como root por medio de una sesión SMTP diseñada, como es demostrado por metacaracteres de shell en un campo MAIL FROM. Esto afecta la configuración predeterminada "uncommented". • https://www.exploit-db.com/exploits/47984 https://www.exploit-db.com/exploits/48038 https://www.exploit-db.com/exploits/48051 https://github.com/QTranspose/CVE-2020-7247-exploit https://github.com/bytescrappers/CVE-2020-7247 https://github.com/r0lh/CVE-2020-7247 https://github.com/SimonSchoeni/CVE-2020-7247-POC https://github.com/f4T1H21/CVE-2020-7247 http://packetstormsecurity.com/files/156137/OpenBSD-OpenSMTPD-Privilege-Escalation-Code-Execution.html http://packetstormsecurity.com/ • CWE-78: Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection') CWE-755: Improper Handling of Exceptional Conditions •
CVSS: 6.5EPSS: 0%CPEs: 897EXPL: 0CVE-2020-0549 – hw: L1D Cache Eviction Sampling
https://notcve.org/view.php?id=CVE-2020-0549
Cleanup errors in some data cache evictions for some Intel(R) Processors may allow an authenticated user to potentially enable information disclosure via local access. Unos errores de limpieza en algunos desalojos de caché de datos para algunos procesadores Intel(R), pueden permitir a un usuario autenticado habilitar potencialmente una divulgación de información por medio del acceso local. A microarchitectural timing flaw was found on some Intel processors. A corner case exists where data in-flight during the eviction process can end up in the “fill buffers” and not properly cleared by the MDS mitigations. The fill buffer contents (which were expected to be blank) can be inferred using MDS or TAA style attack methods to allow a local attacker to infer fill buffer values. • http://lists.opensuse.org/opensuse-security-announce/2020-06/msg00016.html https://kc.mcafee.com/corporate/index?page=content&id=SB10318 https://lists.debian.org/debian-lts-announce/2020/06/msg00019.html https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/DT2VKDMQ3I37NBNJ256A2EXR7OJHXXKZ https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/T5OUM24ZC43G4IDT3JUCIHJTSDXJSK6Y https://security.netapp.com/advisory/ntap-20200210-0004 https://usn.ubunt • CWE-200: Exposure of Sensitive Information to an Unauthorized Actor CWE-404: Improper Resource Shutdown or Release •
CVSS: 7.8EPSS: 0%CPEs: 6EXPL: 1CVE-2019-20421 – exiv2: infinite loop and hang in Jp2Image::readMetadata() in jp2image.cpp could lead to DoS
https://notcve.org/view.php?id=CVE-2019-20421
In Jp2Image::readMetadata() in jp2image.cpp in Exiv2 0.27.2, an input file can result in an infinite loop and hang, with high CPU consumption. Remote attackers could leverage this vulnerability to cause a denial of service via a crafted file. En la función Jp2Image::readMetadata() en el archivo jp2image.cpp en Exiv2 versión 0.27.2, un archivo de entrada puede generar un bucle infinito y suspensión, con un alto consumo de CPU. Los atacantes remotos podrían aprovechar esta vulnerabilidad para causar una denegación de servicio por medio de un archivo diseñado. A denial of service vulnerability was found in exiv2 in the way JPEG 2000 (JP2) metadata was read when processing an image file. • https://github.com/Exiv2/exiv2/commit/a82098f4f90cd86297131b5663c3dec6a34470e8 https://github.com/Exiv2/exiv2/issues/1011 https://lists.debian.org/debian-lts-announce/2021/08/msg00028.html https://usn.ubuntu.com/4270-1 https://www.debian.org/security/2021/dsa-4958 https://access.redhat.com/security/cve/CVE-2019-20421 https://bugzilla.redhat.com/show_bug.cgi?id=1800472 • CWE-400: Uncontrolled Resource Consumption CWE-835: Loop with Unreachable Exit Condition ('Infinite Loop') •
CVSS: 4.7EPSS: 0%CPEs: 74EXPL: 0CVE-2019-15795 – python-apt uses MD5 for validation
https://notcve.org/view.php?id=CVE-2019-15795
python-apt only checks the MD5 sums of downloaded files in `Version.fetch_binary()` and `Version.fetch_source()` of apt/package.py in version 1.9.0ubuntu1 and earlier. This allows a man-in-the-middle attack which could potentially be used to install altered packages and has been fixed in versions 1.9.0ubuntu1.2, 1.6.5ubuntu0.1, 1.1.0~beta1ubuntu0.16.04.7, 0.9.3.5ubuntu3+esm2, and 0.8.3ubuntu7.5. Python-apt solo comprueba las cantidades MD5 de los archivos descargados en las funciones "Version.fetch_binary()" y "Version.fetch_source()" del archivo apt/package.py en la versión 1.9.0ubuntu1 y anteriores. Esto permite un ataque de tipo man-in-the-middle que podría ser usado para instalar paquetes alterados y ha sido corregido en las versiones 1.9.0ubuntu1.2, 1.6.5ubuntu0.1, 1.1.0~beta1ubuntu0.16.04.7, 0.9. 3.5ubuntu3+esm2, y 0.8.3ubuntu7.5. • https://usn.ubuntu.com/4247-1 https://usn.ubuntu.com/4247-3 • CWE-327: Use of a Broken or Risky Cryptographic Algorithm •
CVSS: 4.7EPSS: 0%CPEs: 74EXPL: 0CVE-2019-15796 – python-apt downloads from untrusted sources
https://notcve.org/view.php?id=CVE-2019-15796
Python-apt doesn't check if hashes are signed in `Version.fetch_binary()` and `Version.fetch_source()` of apt/package.py or in `_fetch_archives()` of apt/cache.py in version 1.9.3ubuntu2 and earlier. This allows downloads from unsigned repositories which shouldn't be allowed and has been fixed in verisions 1.9.5, 1.9.0ubuntu1.2, 1.6.5ubuntu0.1, 1.1.0~beta1ubuntu0.16.04.7, 0.9.3.5ubuntu3+esm2, and 0.8.3ubuntu7.5. Python-apt no comprueba si los hashes están firmados en las funciones "Version.fetch_binary()" y "Version.fetch_source()" del archivo apt/package.py o en la función "_fetch_archives()" del archivo apt/cache.py en versión 1.9. 3ubuntu2 y anteriores. Esto permite descargas desde repositorios no firmados que no deberían ser permitidos y ha sido corregido en las versiones 1.9.5, 1.9.0ubuntu1.2, 1.6.5ubuntu0.1, 1.1.0~beta1ubuntu0.16.04.7, 0.9.3.5ubuntu3+esm2 y 0.8.3ubuntu7.5. • https://usn.ubuntu.com/4247-1 https://usn.ubuntu.com/4247-3 • CWE-287: Improper Authentication CWE-347: Improper Verification of Cryptographic Signature •