VAR-201304-0270
Vulnerability from variot - Updated: 2023-12-18 13:40Cisco IOS XE 2.x and 3.x before 3.4.5S, and 3.5 through 3.7 before 3.7.1S, on 1000 series Aggregation Services Routers (ASR) allows remote attackers to cause a denial of service (card reload) by sending many crafted L2TP packets, aka Bug ID CSCtz23293. Vendors have confirmed this vulnerability Bug ID CSCtz23293 It is released as.Skillfully crafted by a third party L2TP Service disruption via packets ( Reload card ) There is a possibility of being put into a state. Cisco IOS is the interconnected network operating system used on most Cisco system routers and network switches. The Cisco 1000 ASR does not correctly handle special L2TP packets, allowing an attacker to send a large number of L2TP packets to overload the system and cause a denial of service attack. The communication with the target affected device cannot trigger this vulnerability. Successful exploits may allow an attackers to cause a reload of the affected devices, denying service to legitimate users. Repeated attacks will result in a sustained denial of service. This issue is being tracked by Cisco Bug ID CSCtz23293
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Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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