XML Entity Expansion Denial of Service Vulnerability

CVE-2011-1753 · MEDIUM Severity

AV:N/AC:L/AU:N/C:N/I:N/A:P

expat_erl.c in ejabberd before 2.1.7 and 3.x before 3.0.0-alpha-3, and exmpp before 0.9.7, does not properly detect recursion during entity expansion, which allows remote attackers to cause a denial of service (memory and CPU consumption) via a crafted XML document containing a large number of nested entity references, a similar issue to CVE-2003-1564.

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