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Category:   Device (Firewall)  >   Cisco ASA Vendors:   Cisco
Cisco ASA TCP ACK Packet Processing Bug Lets Remote Users Deny Service
SecurityTracker Alert ID:  1020177
SecurityTracker URL:
CVE Reference:   CVE-2008-2055   (Links to External Site)
Date:  Jun 4 2008
Impact:   Denial of service via network
Fix Available:  Yes  Vendor Confirmed:  Yes  
Version(s): 7.1, 7.2, 8.0
Description:   A vulnerability was reported in Cisco ASA. A remote user can cause denial of service conditions.

A remote user can send a specially crafted TCP ACK packet to the device to cause unspecified denial of service conditions.

Packets traversing the device cannot trigger this vulnerability.

Versions 7.1.x and 7.2.x with WebVPN, SSL VPN, or ASDM enabled are affected. Version 8.0 with Telnet, Secure Shell (SSH), WebVPN, SSL VPN, or ASDM enabled is affected.

Cisco has assigned Cisco Bug ID CSCsm84110 to this vulnerability.

Impact:   A remote user can cause denial of service conditions.
Solution:   The vendor has issued a fix (7.1(2)70, 7.2(4), 8.0(3)10).

The vendor's advisory is available at:

Vendor URL: (Links to External Site)
Cause:   State error

Message History:   None.

 Source Message Contents

[Original Message Not Available for Viewing]

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