5 Medium
CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
PARTIAL
AV:N/AC:L/Au:N/C:N/I:N/A:P
0.078 Low
EPSS
Percentile
94.3%
A vulnerability in Microsoft Windows may allow a remote attacker to cause a denial of service.
Microsoft Windows XP SP2 and Windows Server 2003 are vulnerable to a denial-of-service attack via a crafted TCP packet. The packet is spoofed in a manner such that the source and destination IP addresses are the same, the source and destination ports are the same, and the SYN flag is set. This type of attack is known as a LAND attack.
Upon receiving such a packet, Windows may become unresponsive for several seconds.
By sending a specially crafted TCP packet to a Windows machine, an attacker could cause excessive CPU usage on the target system. Repeated exploitation of this vulnerability could result in a sustained denial-of-service condition.
Apply a patch
Apply a patch as described in Microsoft Security Bulletin MS05-019.
Filter Network Traffic
Network firewall, Intrusion Detection and Prevention Systems, and packet filtering technology may be able to detect and block LAND attacks. If a perimeter network device is configured to drop incoming packets with source IP addresses that match addresses within the network, a remote attacker may not be able to exploit this vulnerability.
396645
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Notified: March 09, 2005 Updated: March 23, 2005
Affected
We have not received a statement from the vendor.
The vendor has not provided us with any further information regarding this vulnerability.
US-CERT has no additional comments at this time.
If you have feedback, comments, or additional information about this vulnerability, please send us [email](<mailto:[email protected]?Subject=VU%23396645 Feedback>).
Group | Score | Vector |
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Base | ||
Temporal | ||
Environmental |
This vulnerability was publicly disclosed by Dejan Levaja.
This document was written by Will Dormann.
CVE IDs: | CVE-2005-0688 |
---|---|
Severity Metric: | 12.15 Date Public: |