gnu-radius -- SNMP-related denial-of-service

2004-09-15T00:00:00
ID E6F0EDD8-0B40-11D9-8A8A-000C41E2CDAD
Type freebsd
Reporter FreeBSD
Modified 2005-05-03T00:00:00

Description

An iDEFENSE security advisory reports:

Remote exploitation of an input validation error in version 1.2 of GNU radiusd could allow a denial of service. The vulnerability specifically exists within the asn_decode_string() function defined in snmplib/asn1.c. When a very large unsigned number is supplied, it is possible that an integer overflow will occur in the bounds-checking code. The daemon will then attempt to reference unallocated memory, resulting in an access violation that causes the process to terminate.