CVE-2014-4616 – python: missing boundary check in JSON module

https://notcve.org/view.php?id=CVE-2014-4616

Array index error in the scanstring function in the _json module in Python 2.7 through 3.5 and simplejson before 2.6.1 allows context-dependent attackers to read arbitrary process memory via a negative index value in the idx argument to the raw_decode function. Un error de índice de matriz en la función scanstring en el módulo the _json en Python 2.7 en su versión 3.5 y simplejson en su versión 2.6.1 permite que atacantes dependientes del contexto lean archivos arbitrarios de la memoria de proceso mediante un valor de índice negativo en el argumento idx en la función raw_decode function. A flaw was found in the way the json module handled negative index argument passed to certain functions (such as raw_decode()). An attacker able to control index value passed to one of the affected functions could possibly use this flaw to disclose portions of the application memory. • http://bugs.python.org/issue21529 http://lists.opensuse.org/opensuse-updates/2014-07/msg00015.html http://openwall.com/lists/oss-security/2014/06/24/7 http://rhn.redhat.com/errata/RHSA-2015-1064.html http://www.securityfocus.com/bid/68119 https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=752395 https://bugzilla.redhat.com/show_bug.cgi?id=1112285 https://hackerone.com/reports/12297 https://security.gentoo.org/glsa/201503-10 https://access.redhat.com/security/cve/CV • CWE-119: Improper Restriction of Operations within the Bounds of a Memory Buffer CWE-129: Improper Validation of Array Index •