CVSS: 5.0EPSS: 0%CPEs: 58EXPL: 1CVE-2012-1150 – python: hash table collisions CPU usage DoS (oCERT-2011-003)
https://notcve.org/view.php?id=CVE-2012-1150
Python before 2.6.8, 2.7.x before 2.7.3, 3.x before 3.1.5, and 3.2.x before 3.2.3 computes hash values without restricting the ability to trigger hash collisions predictably, which allows context-dependent attackers to cause a denial of service (CPU consumption) via crafted input to an application that maintains a hash table. Python anteriores a v2.6.8, v2.7.x anteriores a v2.7.3, 3.x anteriores a v3.1.5, y v3.2.x anteriores a v3.2.3 procesa los valores hash sin restringir la disponibilidad para provocar colisiones predecibles, lo que permite a atacantes dependiendo del contexto provocar una denegación de servicio (consumo de CPU) a través de una entrada manipulada sobre una aplicación que mantiene una tabla hash. • http://bugs.python.org/issue13703 http://lists.apple.com/archives/security-announce/2013/Oct/msg00004.html http://lists.opensuse.org/opensuse-security-announce/2020-01/msg00040.html http://mail.python.org/pipermail/python-dev/2011-December/115116.html http://mail.python.org/pipermail/python-dev/2012-January/115892.html http://python.org/download/releases/2.6.8 http://python.org/download/releases/2.7.3 http://python.org/download/releases/3.1.5 http://python.org/download/ • CWE-310: Cryptographic Issues •
CVSS: 5.0EPSS: 0%CPEs: 22EXPL: 0CVE-2012-0876 – expat: hash table collisions CPU usage DoS
https://notcve.org/view.php?id=CVE-2012-0876
The XML parser (xmlparse.c) in expat before 2.1.0 computes hash values without restricting the ability to trigger hash collisions predictably, which allows context-dependent attackers to cause a denial of service (CPU consumption) via an XML file with many identifiers with the same value. El analizador XML (xmlparse.c) en expat antes de v2.1.0 calcula los valores de hash sin restringir la capacidad de desencadenar colisiones hash de forma predecible, lo que permite causar una denegación de servicio (por consumo de CPU) a atacantes dependientes de contexto a través de un archivo XML con muchos identificadores con el mismo valor. A denial of service flaw was found in the implementation of hash arrays in Expat. An attacker could use this flaw to make an application using Expat consume an excessive amount of CPU time by providing a specially crafted XML file that triggers multiple hash function collisions. To mitigate this issue, randomization has been added to the hash function to reduce the chance of an attacker successfully causing intentional collisions. • http://bugs.python.org/issue13703#msg151870 http://lists.apple.com/archives/security-announce/2013/Oct/msg00004.html http://lists.apple.com/archives/security-announce/2015/Dec/msg00005.html http://mail.libexpat.org/pipermail/expat-discuss/2012-March/002768.html http://rhn.redhat.com/errata/RHSA-2012-0731.html http://rhn.redhat.com/errata/RHSA-2016-0062.html http://rhn.redhat.com/errata/RHSA-2016-2957.html http://secunia.com/advisories/49504 http://secunia.com/advisories/51024 • CWE-400: Uncontrolled Resource Consumption CWE-407: Inefficient Algorithmic Complexity •
CVSS: 6.4EPSS: 13%CPEs: 39EXPL: 0CVE-2011-1521 – urllib2): Improper management of ftp:// and file:// URL schemes (Issue #11662)
https://notcve.org/view.php?id=CVE-2011-1521
The urllib and urllib2 modules in Python 2.x before 2.7.2 and 3.x before 3.2.1 process Location headers that specify redirection to file: URLs, which makes it easier for remote attackers to obtain sensitive information or cause a denial of service (resource consumption) via a crafted URL, as demonstrated by the file:///etc/passwd and file:///dev/zero URLs. Los módulos urllib y urllib2 en Python v2.x anteriores a v2.7.2 y v3.x anteriores a v3.2.1 procesan los encabezados de ubicación que especificar la redirección del fichero: URLs, lo que hace que sea más fácil para los atacantes remotos obtener información sensible o provocar una denegación de servicio (consumo de recursos) a través de una URL manipulada, como lo demuestra lso ficheros URLs: //etc/passwd y //dev/zero. • http://bugs.python.org/issue11662 http://hg.python.org/cpython/file/96a6c128822b/Misc/NEWS http://hg.python.org/cpython/file/b2934d98dac1/Misc/NEWS http://hg.python.org/cpython/rev/96a6c128822b http://hg.python.org/cpython/rev/b2934d98dac1 http://lists.apple.com/archives/Security-announce/2011//Oct/msg00003.html http://lists.opensuse.org/opensuse-security-announce/2011-05/msg00005.html http://openwall.com/lists/oss-security/2011/03/24/5 http://openwall.com/lists/oss-secur • CWE-399: Resource Management Errors •
CVSS: 5.0EPSS: 3%CPEs: 2EXPL: 0CVE-2010-3492
https://notcve.org/view.php?id=CVE-2010-3492
The asyncore module in Python before 3.2 does not properly handle unsuccessful calls to the accept function, and does not have accompanying documentation describing how daemon applications should handle unsuccessful calls to the accept function, which makes it easier for remote attackers to conduct denial of service attacks that terminate these applications via network connections. El módulo asyncore en Python anterior a v3.2 no controla correctamente llamadas fallidas a la función accept, y no tiene la documentación adjunta que describa cómo las aplicaciones demonio atienden las llamadas sin éxito a la función accept, lo cual facilita a atacantes remotos realizar ataques de denegación de servicio que terminan estas aplicaciones a través de conexiones de red. • http://bugs.python.org/issue6706 http://www.mandriva.com/security/advisories?name=MDVSA-2010:215 http://www.mandriva.com/security/advisories?name=MDVSA-2010:216 http://www.openwall.com/lists/oss-security/2010/09/09/6 http://www.openwall.com/lists/oss-security/2010/09/11/2 http://www.openwall.com/lists/oss-security/2010/09/22/3 http://www.openwall.com/lists/oss-security/2010/09/24/3 https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Ad •
CVSS: 5.0EPSS: 11%CPEs: 2EXPL: 0CVE-2010-3493 – Python: SMTP proxy RFC 2821 module DoS (uncaught exception) (Issue #9129)
https://notcve.org/view.php?id=CVE-2010-3493
Multiple race conditions in smtpd.py in the smtpd module in Python 2.6, 2.7, 3.1, and 3.2 alpha allow remote attackers to cause a denial of service (daemon outage) by establishing and then immediately closing a TCP connection, leading to the accept function having an unexpected return value of None, an unexpected value of None for the address, or an ECONNABORTED, EAGAIN, or EWOULDBLOCK error, or the getpeername function having an ENOTCONN error, a related issue to CVE-2010-3492. Múltiples condiciones de carrera en smtpd.py en el módulo smtpd in Python v2.6, v2.7, v3.1 y v3.2 alpha permite a atacantes remotos provocar una denegación de servicio (agotamiento de demonio)por establecimiento e inmediatamente cerrando una conexión TCP, llevando la función accept a devolver un valor inesperado de None, un valor inesperado de None para la dirección, o un error ECONNABORTED, EAGAIN, o EWOULDBLOCK, o la función getpeername teniendo un error ENOTCONN, tema relacionado con CVE-2010-3492. • http://bugs.python.org/issue6706 http://bugs.python.org/issue9129 http://lists.opensuse.org/opensuse-security-announce/2010-12/msg00006.html http://lists.opensuse.org/opensuse-security-announce/2011-01/msg00006.html http://secunia.com/advisories/43068 http://secunia.com/advisories/50858 http://secunia.com/advisories/51024 http://secunia.com/advisories/51040 http://svn.python.org/view/python/branches/py3k/Lib/smtpd.py?r1=84289&r2=84288&pathrev=84289 http://svn.python.org/view?v • CWE-362: Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition') •