CVSS: 7.5EPSS: 0%CPEs: 1EXPL: 1CVE-2021-21240 – Regular Expression Denial of Service in httplib2
https://notcve.org/view.php?id=CVE-2021-21240
httplib2 is a comprehensive HTTP client library for Python. In httplib2 before version 0.19.0, a malicious server which responds with long series of "\xa0" characters in the "www-authenticate" header may cause Denial of Service (CPU burn while parsing header) of the httplib2 client accessing said server. This is fixed in version 0.19.0 which contains a new implementation of auth headers parsing using the pyparsing library. httplib2 es una biblioteca cliente HTTP completa para Python. En httplib2 anterior a la versión 0.19.0, un servidor malicioso que responde con una larga serie de caracteres "\xa0" en el encabezado "www-authenticate" puede causar una Denegación de Servicio (CPU quemada mientras analiza el encabezado) del cliente httplib2 que accede a dicho servidor. Esto se corrigió en la versión 0.19.0, que contiene una nueva implementación de análisis de encabezados de autenticación usando la biblioteca pyparsing An uncontrolled resource consumption flaw as found in python-httplib2, due to a flawed regular expression used while parsing the WWW-Authenticate header in an HTTP response. • https://github.com/httplib2/httplib2/commit/bd9ee252c8f099608019709e22c0d705e98d26bc https://github.com/httplib2/httplib2/pull/182 https://github.com/httplib2/httplib2/security/advisories/GHSA-93xj-8mrv-444m https://pypi.org/project/httplib2 https://access.redhat.com/security/cve/CVE-2021-21240 https://bugzilla.redhat.com/show_bug.cgi?id=1926885 • CWE-400: Uncontrolled Resource Consumption •
CVSS: 6.8EPSS: 0%CPEs: 4EXPL: 0CVE-2020-11078 – CRLF injection in httplib2
https://notcve.org/view.php?id=CVE-2020-11078
In httplib2 before version 0.18.0, an attacker controlling unescaped part of uri for `httplib2.Http.request()` could change request headers and body, send additional hidden requests to same server. This vulnerability impacts software that uses httplib2 with uri constructed by string concatenation, as opposed to proper urllib building with escaping. This has been fixed in 0.18.0. En httplib2 versiones anteriores a 0.18.0, un atacante controla una parte no escapada de un uri para la función "httplib2.Http.request()" podía cambiar los encabezados y el cuerpo de las peticiones, enviar peticiones ocultas adicionales hacia el mismo servidor. Esta vulnerabilidad impacta al software que usa httplib2 con un uri construido mediante una concatenación en cadena, a diferencia de una construcción apropiada de urllib con escape. • https://github.com/httplib2/httplib2/commit/a1457cc31f3206cf691d11d2bf34e98865873e9e https://github.com/httplib2/httplib2/security/advisories/GHSA-gg84-qgv9-w4pq https://lists.apache.org/thread.html/r23711190c2e98152cb6f216b95090d5eeb978543bb7e0bad22ce47fc%40%3Cissues.beam.apache.org%3E https://lists.apache.org/thread.html/r4d35dac106fab979f0db75a07fc4e320ad848b722103e79667ff99e1%40%3Cissues.beam.apache.org%3E https://lists.apache.org/thread.html/r69a462e690b5f2c3d418a288a2c98ae764d58587bd0b5d6ab141f25f%40%3Cissues.beam.apache.org%3E https://lists.apache.org/thread.html • CWE-74: Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection') CWE-93: Improper Neutralization of CRLF Sequences ('CRLF Injection') CWE-113: Improper Neutralization of CRLF Sequences in HTTP Headers ('HTTP Request/Response Splitting') •
CVSS: 2.6EPSS: 0%CPEs: 6EXPL: 2CVE-2013-2037
https://notcve.org/view.php?id=CVE-2013-2037
httplib2 0.7.2, 0.8, and earlier, after an initial connection is made, does not verify that the server hostname matches a domain name in the subject's Common Name (CN) or subjectAltName field of the X.509 certificate, which allows man-in-the-middle attackers to spoof SSL servers via an arbitrary valid certificate. httplib2 0.7.2, 0.8 y anteriores, despues de la conexión inicial, no verifica que el hostname del servidor es igual al nombre de dominio en el Common Name (CN) del asunto o el campo subjectAltName del certificado X.509, lo cual permite a atacantes man-in-the-middle falsear servidores SSL a través de un certificado válido arbitrario. • http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=706602 http://code.google.com/p/httplib2/issues/detail?id=282 http://seclists.org/oss-sec/2013/q2/257 http://www.securityfocus.com/bid/52179 http://www.ubuntu.com/usn/USN-1948-1 https://bugs.launchpad.net/httplib2/+bug/1175272 • CWE-20: Improper Input Validation •