CVSS2
Attack Vector
NETWORK
Attack Complexity
MEDIUM
Authentication
SINGLE
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
COMPLETE
AV:N/AC:M/Au:S/C:N/I:N/A:C
EPSS
Percentile
44.8%
A vulnerability in the Layer 2 Tunneling Protocol (L2TP) module of Cisco IOS XE on Cisco ASR 1000 Series Routers could allow an authenticated, remote attacker to cause a reload of the processing ESP card.
The vulnerability occurs during the processing of a malformed L2TP packet. An attacker could exploit this vulnerability by sending malformed L2TP packets over an established L2TP session. An exploit could allow the attacker to cause a reload of the affected ESP card.
Cisco has confirmed the vulnerability in a security notice and released software updates.
To exploit this vulnerability, an attacker must authenticate to a targeted device. This access requirement decreases the likelihood of a successful exploit attempt.
Cisco indicates through the CVSS score that functional exploit code exists; however, the code is not known to be publicly available.
Vendor | Product | Version | CPE |
---|---|---|---|
cisco | cisco_ios | 3.10s | cpe:2.3:o:cisco:cisco_ios:3.10s:xe:*:*:*:*:*:* |
cisco | cisco_ios | 3.10.0s | cpe:2.3:o:cisco:cisco_ios:3.10.0s:xe:*:*:*:*:*:* |
cisco | cisco_ios | 3.10.1s | cpe:2.3:o:cisco:cisco_ios:3.10.1s:xe:*:*:*:*:*:* |
cisco | cisco_ios | 3.10.2s | cpe:2.3:o:cisco:cisco_ios:3.10.2s:xe:*:*:*:*:*:* |
cisco | cisco_ios | 3.10.0as | cpe:2.3:o:cisco:cisco_ios:3.10.0as:xe:*:*:*:*:*:* |