Cisco Cisco Email Security Appliance C370D
Known Issues
22
Release Notes for Cisco IronPort AsyncOS 7.1.5 for Email Hot Patch Release
OL-22161-04
Known Issues
The following list describes known issues in this release of AsyncOS for Email.
Anti-Virus Issues
Table 7
Anti-Virus Issues
Defect ID
Description
68899
Sophos Anti-Virus Unable to Scan PDFs with Large Cross-Reference Tables
The most recent Sophos anti-virus scanning engine imposes a maximum limit to the
number of entries in a PDF’s cross-reference tables to avoid malformed files from
using too much memory. The scanning engine returns “unscannable” for PDFs that
exceed the maximum limit even if they are not malformed. Cisco IronPort is working
with Sophos to resolve this issue in a future Sophos engine update.
number of entries in a PDF’s cross-reference tables to avoid malformed files from
using too much memory. The scanning engine returns “unscannable” for PDFs that
exceed the maximum limit even if they are not malformed. Cisco IronPort is working
with Sophos to resolve this issue in a future Sophos engine update.
77059
Messages Altered by AsyncOS are Unscannable by Sophos
AsyncOS sometimes cleans bare CR and LF characters from messages, which results
in Sophos flagging the messages as unscannable.
in Sophos flagging the messages as unscannable.