var-200210-0273
Vulnerability from variot
The LAN-to-LAN IPSEC capability for Cisco VPN 3000 Concentrator 2.2.x, and 3.x before 3.5.4, allows remote attackers to cause a denial of service via an incoming LAN-to-LAN connection with an existing security association with another device on the remote network, which causes the concentrator to remove the previous connection. Cisco has reported a security vulnerability in VPN 3000 series concentrator devices. The vulnerability is related to handling of incoming LAN-to-LAN IPSEC tunnel connections. According to Cisco, this behaviour may be exploitable as a denial of service attack. Furthermore, affected devices do not ensure that the data transmitted across a LAN-to-LAN IPSEC tunnel is sourced from the appropriate network. The implications of this potentially separate issue are not yet known. There are loopholes in the LAN-to-LAN IPSEC capability of Cisco VPN 3000 Concentrator 2.2.x and versions 3.x before 3.5.4
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Sightings
Author | Source | Type | Date |
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Nomenclature
- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.