Juniper Junos 10.4 before 10.4S13, 11.4 before 11.4R7-S1, 12.1 before 12.1R5-S3, 12.1X44 before 12.1X44-D20, and 12.1X45 before 12.1X45-D10 on the SRX1400, SRX3400, and SRX3600 does not properly initialize memory locations used during padding of Ethernet packets, which allows remote attackers to obtain sensitive information by reading packet data, aka PR 829536, a related issue to CVE-2003-0001.