-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Cisco Security Advisory: Cisco Email Security Appliance Advanced Malware Protection Attachment Scanning Denial of Service Vulnerability
Advisory ID: cisco-sa-20161026-esa2 Revision 1.0 For Public Release 2016 October 26 16:00 UTC (GMT) +--------------------------------------------------------------------- Summary ======= A vulnerability in the email attachment scanning functionality of the Advanced Malware Protection (AMP) feature of Cisco AsyncOS Software for Cisco Email Security Appliances could allow an unauthenticated, remote attacker to cause an affected device to stop scanning and forwarding email messages due to a denial of service (DoS) condition. The vulnerability is due to improper handling of UU-encoded files that are attached to an email message. An attacker could exploit this vulnerability by sending a crafted email message with a UU-encoded file attachment through an affected device. The scanning of the attachment could cause the mail handling process of the affected software to restart, resulting in a DoS condition. After the mail handling process restarts, the software resumes scanning for the same attachment, which could cause the mail handling process to restart again. A successful exploit could allow the attacker to cause a repeated DoS condition. Cisco has released software updates that address this vulnerability. There are no workarounds that address this vulnerability. This advisory is available at the following link: http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20161026-esa2 -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.5 (SunOS) iQIVAwUBWAef8K89gD3EAJB5AQJmjhAArJx4+FUbQwa+YUwSBBgQN3NWEAXD0VdZ 5gl9ig/7Y5AST/OrhAfhTVL94/8O/0FECeXqlmRc9qrAJ6ouR3GcvIhd0kOYTmeR Pxj+v0XyBJlp1qzvgy97jM+hSXoT/8MPcdAzVBlTtI2pFOnkgAPWGuKr/nbR7AkD gRns2NRPlXTZnyo5LpxXR/JLo0+RpTOFPpuZNZYSLf0uOVimfrR+OLssCnzIZFdu 8P2k3XMU7oa6QA/EIruayFqBOaIWjjLvcyNPPehUU3Ye3g1tR86qU6Ik/E4VTSDB ufxg/GtbafCkYqa6TEeWWQRyNUUDzo8rKjFz+HY5yuKEaT6IH9dpPndj8N/LQO93 R58OABHlpQdlDynSPSInMzK+PkEX3R8+HmViVmcVKYmm847uExkcYJljKoPEE6iB b90VJ4Ey8KThCKNCNDF5c27cv5Yl8RnhZBCl2glVY0jNoBsAPO8xHwxd+MZBCspx YldjHeBNZpWGx0ZN8OX/qY33nEC9DOKdGshmYt8xA+BIhlAfGeHGNZft9U4cXdYm /ZwTNc8e3ujzaR/o9T+G9LngBWKyMJ6JP9ydhnsh3kZJN3BH8ZdoxS3YUd3asdpB 9PTgpMqd4fk3W8KIQthmi3Mm7grihw/Bz+PKfFxQNvPW6KIcAqS/A0m0sminPHXK K7VNsuZha80= =wtS3 -----END PGP SIGNATURE----- _______________________________________________ cisco-nsp mailing list [email protected] https://puck.nether.net/mailman/listinfo/cisco-nsp archive at http://puck.nether.net/pipermail/cisco-nsp/
