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Category:   Application (E-mail Server)  >   Exim Vendors:
Exim Infinite Loop in bdat_getc() Lets Remote Users Consume Excessive Memory Resources
SecurityTracker Alert ID:  1039873
SecurityTracker URL:
CVE Reference:   CVE-2017-16944   (Links to External Site)
Updated:  Nov 27 2017
Original Entry Date:  Nov 27 2017
Impact:   Denial of service via network
Fix Available:  Yes  Vendor Confirmed:  Yes  Exploit Included:  Yes  

Description:   A vulnerability was reported in Exim. A remote user can consume excessive memory on the target system.

A remote user can connect to the SMTP service and send a specially crafted BDAT command to trigger an infinite loop in bdat_getc() and consume all available stack memory on the target system.

meh reported this vulnerability.

Impact:   A remote user can consume excessive memory resources on the target system.
Solution:   The vendor has issued a source code fix, available at:

The vendor advisory is available at:

Vendor URL: (Links to External Site)
Cause:   State error
Underlying OS:  Linux (Any), UNIX (Any)

Message History:   None.

 Source Message Contents

[Original Message Not Available for Viewing]

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