ISAKMPD "Initial Contact" Notification SA Deletion Vulnerability

BID:9334

Info

ISAKMPD "Initial Contact" Notification SA Deletion Vulnerability

Bugtraq ID: 9334
Class: Access Validation Error
CVE:
Remote: Yes
Local: No
Published: Jan 01 2004 12:00AM
Updated: Jan 01 2004 12:00AM
Credit: Discovered by Thomas Walpuski <[email protected]>.
Vulnerable: OpenBSD OpenBSD 3.4
OpenBSD OpenBSD 3.3
OpenBSD OpenBSD 3.2
OpenBSD OpenBSD 3.1
OpenBSD OpenBSD 3.0
Not Vulnerable:

Discussion

ISAKMPD "Initial Contact" Notification SA Deletion Vulnerability

It has been reported that it is possible for attackers to remotely delete SAs (security associations) in hosts running isakmpd. When isakmpd receives an "INITIAL CONTACT" notification that is attached to a payload considered "reasonable", it will delete the SA associated with the IP address from which the message originated. All associated SAs will be deleted as well. Notifications of "INITIAL CONTACT" will be ignored if the messages to which they are chained are part of an informational exchange.

Exploit / POC

ISAKMPD "Initial Contact" Notification SA Deletion Vulnerability

Though no exploit code is available, a detailed description of an attack that exploits this vulnerability is included in the message by Thomas Walpuski <[email protected]>. See the reference section.

Currently we are not aware of any exploits for this issue. If you feel we are in error or are aware of more recent information, please mail us at: [email protected] <mailto:[email protected]>.

Solution / Fix

ISAKMPD "Initial Contact" Notification SA Deletion Vulnerability

Solution:
The vendor has released a patch to address this issue.


OpenBSD OpenBSD 3.0

OpenBSD OpenBSD 3.2

OpenBSD OpenBSD 3.4

OpenBSD OpenBSD 3.1

OpenBSD OpenBSD 3.3

References

ISAKMPD "Initial Contact" Notification SA Deletion Vulnerability

References:

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