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CVSS: 5.3EPSS: 0%CPEs: 5EXPL: 1

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: 1

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: 9.1EPSS: 0%CPEs: 29EXPL: 1

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 •

CVSS: 6.5EPSS: 0%CPEs: 4EXPL: 1

An issue was discovered in urllib2 in Python 2.x through 2.7.16 and urllib in Python 3.x through 3.7.3. CRLF injection is possible if the attacker controls a url parameter, as demonstrated by the first argument to urllib.request.urlopen with \r\n (specifically in the query string after a ? character) followed by an HTTP header or a Redis command. This is fixed in: v2.7.17, v2.7.17rc1, v2.7.18, v2.7.18rc1; v3.5.10, v3.5.10rc1, v3.5.8, v3.5.8rc1, v3.5.8rc2, v3.5.9; v3.6.10, v3.6.10rc1, v3.6.11, v3.6.11rc1, v3.6.12, v3.6.9, v3.6.9rc1; v3.7.4, v3.7.4rc1, v3.7.4rc2, v3.7.5, v3.7.5rc1, v3.7.6, v3.7.6rc1, v3.7.7, v3.7.7rc1, v3.7.8, v3.7.8rc1, v3.7.9. Se detectó un problema en urllib2 en Python 2.x hasta 2.7.16 y urllib en Python 3.x hasta 3.7.3. • http://lists.opensuse.org/opensuse-security-announce/2019-09/msg00039.html http://lists.opensuse.org/opensuse-security-announce/2019-09/msg00041.html http://packetstormsecurity.com/files/154927/Slackware-Security-Advisory-python-Updates.html http://www.openwall.com/lists/oss-security/2021/02/04/2 http://www.securityfocus.com/bid/107466 https://access.redhat.com/errata/RHSA-2019:1260 https://access.redhat.com/errata/RHSA-2019:2030 https://access.redhat.com/errata/RHSA-2019:3335 https:/&#x • CWE-93: Improper Neutralization of CRLF Sequences ('CRLF Injection') CWE-113: Improper Neutralization of CRLF Sequences in HTTP Headers ('HTTP Request/Response Splitting') •

CVSS: 7.5EPSS: 0%CPEs: 27EXPL: 0

python before versions 2.7.15, 3.4.9, 3.5.6rc1, 3.6.5rc1 and 3.7.0 is vulnerable to catastrophic backtracking in the difflib.IS_LINE_JUNK method. An attacker could use this flaw to cause denial of service. python en versiones anteriores a la 2.7.15, 3.4.9, 3.5.6rc1, 3.6.5rc1 y 3.7.0 es vulnerable a backtracking catastrófico en el método difflib.IS_LINE_JUNK. Un atacante podría utilizar este fallo para provocar una denegación de servicio (DoS). A flaw was found in the way catastrophic backtracking was implemented in python's difflib.IS_LINE_JUNK method. An attacker could use this flaw to cause denial of service. • http://lists.opensuse.org/opensuse-security-announce/2020-01/msg00040.html http://www.securitytracker.com/id/1042001 https://access.redhat.com/errata/RHBA-2019:0327 https://access.redhat.com/errata/RHSA-2018:3041 https://access.redhat.com/errata/RHSA-2018:3505 https://access.redhat.com/errata/RHSA-2019:1260 https://access.redhat.com/errata/RHSA-2019:3725 https://bugs.python.org/issue32981 https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-1061 https://docs.python.org/ • CWE-20: Improper Input Validation •