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Category:   Application (E-mail Server)  >   Exim Vendors:
Exim DKIM Signature Format String Flaw Lets Remote Users Execute Arbitrary Code
SecurityTracker Alert ID:  1025504
SecurityTracker URL:
CVE Reference:   CVE-2011-1764   (Links to External Site)
Updated:  May 16 2011
Original Entry Date:  May 6 2011
Impact:   Execution of arbitrary code via network, User access via network
Fix Available:  Yes  Vendor Confirmed:  Yes  Exploit Included:  Yes  
Version(s): 4.70 - 4.75
Description:   A vulnerability was reported in Exim. A remote user can execute arbitrary code on the target system.

A remote user can send e-mail with a specially crafted DKIM signature value to trigger a format string flaw and execute arbitrary code on the target system. The code will run with the privileges of the target service.

John R. Levine reported this vulnerability.

Impact:   A remote user can execute arbitrary code on the target system.
Solution:   The vendor has issued a fix (4.76 RC1).

The vendor's advisory is available at:

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

Message History:   None.

 Source Message Contents

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