CVSS: 7.5EPSS: 0%CPEs: 5EXPL: 1CVE-2019-15903 – expat: heap-based buffer over-read via crafted XML input
https://notcve.org/view.php?id=CVE-2019-15903
In libexpat before 2.2.8, crafted XML input could fool the parser into changing from DTD parsing to document parsing too early; a consecutive call to XML_GetCurrentLineNumber (or XML_GetCurrentColumnNumber) then resulted in a heap-based buffer over-read. En libexpat versiones anteriores a 2.2.8, una entrada XML especialmente diseñada podría engañar al analizador para que cambie de análisis DTD a análisis de documentos demasiado pronto; una llamada consecutiva a la función XML_GetCurrentLineNumber (o XML_GetCurrentColumnNumber) luego resultó en una lectura excesiva del búfer en la región heap de la memoria. • http://lists.opensuse.org/opensuse-security-announce/2019-09/msg00080.html http://lists.opensuse.org/opensuse-security-announce/2019-09/msg00081.html http://lists.opensuse.org/opensuse-security-announce/2019-11/msg00000.html http://lists.opensuse.org/opensuse-security-announce/2019-11/msg00002.html http://lists.opensuse.org/opensuse-security-announce/2019-11/msg00003.html http://lists.opensuse.org/opensuse-security-announce/2019-11/msg00013.html http://lists.opensuse.org/opensuse-security-announce/2019-11 • CWE-125: Out-of-bounds Read CWE-776: Improper Restriction of Recursive Entity References in DTDs ('XML Entity Expansion') •
CVSS: 5.3EPSS: 0%CPEs: 5EXPL: 1CVE-2018-20852 – python: Cookie domain check returns incorrect results
https://notcve.org/view.php?id=CVE-2018-20852
http.cookiejar.DefaultPolicy.domain_return_ok in Lib/http/cookiejar.py in Python before 3.7.3 does not correctly validate the domain: it can be tricked into sending existing cookies to the wrong server. An attacker may abuse this flaw by using a server with a hostname that has another valid hostname as a suffix (e.g., pythonicexample.com to steal cookies for example.com). When a program uses http.cookiejar.DefaultPolicy and tries to do an HTTP connection to an attacker-controlled server, existing cookies can be leaked to the attacker. This affects 2.x through 2.7.16, 3.x before 3.4.10, 3.5.x before 3.5.7, 3.6.x before 3.6.9, and 3.7.x before 3.7.3. http.cookiejar.DefaultPolicy.domain_return_ok en Lib / http / cookiejar.py en Python en versiones anteriores a la 3.7.3 no valida correctamente el dominio: se puede engañar para que envíe las cookies existentes al servidor incorrecto. Un atacante puede abusar de este fallo al usar un servidor con un nombre de host que tiene otro nombre de host válido como sufijo (por ejemplo, pythonicexample.com para robar cookies para example.com). • http://lists.opensuse.org/opensuse-security-announce/2019-08/msg00071.html http://lists.opensuse.org/opensuse-security-announce/2019-08/msg00074.html http://lists.opensuse.org/opensuse-security-announce/2020-01/msg00040.html https://access.redhat.com/errata/RHSA-2019:3725 https://access.redhat.com/errata/RHSA-2019:3948 https://bugs.python.org/issue35121 https://lists.debian.org/debian-lts-announce/2019/08/msg00022.html https://lists.debian.org/debian-lts-announce/2019/08/msg00040.html http • CWE-20: Improper Input Validation •
CVSS: 9.3EPSS: 0%CPEs: 3EXPL: 1CVE-2019-13404
https://notcve.org/view.php?id=CVE-2019-13404
The MSI installer for Python through 2.7.16 on Windows defaults to the C:\Python27 directory, which makes it easier for local users to deploy Trojan horse code. (This also affects old 3.x releases before 3.5.) NOTE: the vendor's position is that it is the user's responsibility to ensure C:\Python27 access control or choose a different directory, because backwards compatibility requires that C:\Python27 remain the default for 2.7.x ** EN DISPUTA ** El instalador de MSI para Python mediante la versión 2.7.16 en Windows utiliza por defecto el directorio C: \ Python27, lo que facilita que los usuarios locales implementen el código Trojan Horse. (Esto también afecta a las versiones anteriores de la versión 3.x anteriores a la 3.5). NOTA: la posición del proveedor es que es responsabilidad del usuario garantizar el control de acceso C: \ Python27 o elegir un directorio diferente, ya que la compatibilidad con versiones anteriores requiere que C: \ Python27 siga siendo el por defecto para 2.7.x. • https://github.com/alidnf/CVE-2019-13404 https://docs.python.org/2/faq/windows.html • CWE-552: Files or Directories Accessible to External Parties •
CVSS: 9.8EPSS: 0%CPEs: 28EXPL: 0CVE-2019-10160 – python: regression of CVE-2019-9636 due to functional fix to allow port numbers in netloc
https://notcve.org/view.php?id=CVE-2019-10160
A security regression of CVE-2019-9636 was discovered in python since commit d537ab0ff9767ef024f26246899728f0116b1ec3 affecting versions 2.7, 3.5, 3.6, 3.7 and from v3.8.0a4 through v3.8.0b1, which still allows an attacker to exploit CVE-2019-9636 by abusing the user and password parts of a URL. When an application parses user-supplied URLs to store cookies, authentication credentials, or other kind of information, it is possible for an attacker to provide specially crafted URLs to make the application locate host-related information (e.g. cookies, authentication data) and send them to a different host than where it should, unlike if the URLs had been correctly parsed. The result of an attack may vary based on the application. Se descubrió una regresión de seguridad de CVE-2019-9636 en python desde commit con ID d537ab0ff9767ef024f26246899728f0116b1ec3 que afecta a las versiones 2.7, 3.5, 3.6, 3.7 y de v3.8.0a4 a v3.8.0b1, el cual permite a un atacante explotar CVE-2019-9636 violando las partes usuario (user) y contraseña (password) de una URL. Cuando una aplicación analiza las URL proporcionadas por el usuario para almacenar cookies, credenciales de autenticación u otro tipo de información, es posible que un atacante proporcione URL especialmente creadas para que la aplicación ubique información relacionada con el host (por ejemplo, cookies, datos de autenticación) y envíe a un host diferente al que debería, a diferencia de si las URL se analizaron correctamente. • http://lists.opensuse.org/opensuse-security-announce/2019-08/msg00042.html http://lists.opensuse.org/opensuse-security-announce/2020-01/msg00040.html https://access.redhat.com/errata/RHSA-2019:1587 https://access.redhat.com/errata/RHSA-2019:1700 https://access.redhat.com/errata/RHSA-2019:2437 https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-10160 https://github.com/python/cpython/commit/250b62acc59921d399f0db47db3b462cd6037e09 https://github.com/python/cpython/commit/8d0ef0b5edeae52960c7ed05ae8a12388324f87e • CWE-172: Encoding Error CWE-522: Insufficiently Protected Credentials •
CVSS: 9.1EPSS: 0%CPEs: 29EXPL: 1CVE-2019-9948 – python: Undocumented local_file protocol allows remote attackers to bypass protection mechanisms
https://notcve.org/view.php?id=CVE-2019-9948
urllib in Python 2.x through 2.7.16 supports the local_file: scheme, which makes it easier for remote attackers to bypass protection mechanisms that blacklist file: URIs, as demonstrated by triggering a urllib.urlopen('local_file:///etc/passwd') call. urllib en Python, en versiones 2.x hasta la 2.7.16, soporta el esquema local_file:, lo que facilita que los atacantes remotos omitan los mecanismos de protección que ponen en lista negra los URI file:, tal y como queda demostrado con una llamada urllib.urlopen('local_file:///etc/passwd'). • http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00092.html http://lists.opensuse.org/opensuse-security-announce/2019-06/msg00050.html http://packetstormsecurity.com/files/154927/Slackware-Security-Advisory-python-Updates.html http://www.securityfocus.com/bid/107549 https://access.redhat.com/errata/RHSA-2019:1700 https://access.redhat.com/errata/RHSA-2019:2030 https://access.redhat.com/errata/RHSA-2019:3335 https://access.redhat.com/errata/RHSA-2019:3520 https://bugs.python.o • CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') CWE-749: Exposed Dangerous Method or Function •