CVSS2
Attack Vector
NETWORK
Attack Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
COMPLETE
AV:N/AC:M/Au:N/C:N/I:N/A:C
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
CHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
EPSS
Percentile
48.6%
A vulnerability in the DNS application layer gateway (ALG) functionality used by Network Address Translation (NAT) in Cisco IOS XE Software could allow an unauthenticated, remote attacker to cause an affected device to reload. The vulnerability is due to a logic error that occurs when an affected device inspects certain DNS packets. An attacker could exploit this vulnerability by sending crafted DNS packets through an affected device that is performing NAT for DNS packets. A successful exploit could allow an attacker to cause the device to reload, resulting in a denial of service (DoS) condition on an affected device. The vulnerability can be exploited only by traffic that is sent through an affected device via IPv4 packets. The vulnerability cannot be exploited via IPv6 traffic.
Vendor | Product | Version | CPE |
---|---|---|---|
cisco | ios_xe | 3.7.0bs | cpe:2.3:o:cisco:ios_xe:3.7.0bs:*:*:*:*:*:*:* |
cisco | ios_xe | 3.7.0s | cpe:2.3:o:cisco:ios_xe:3.7.0s:*:*:*:*:*:*:* |
cisco | ios_xe | 3.7.0xas | cpe:2.3:o:cisco:ios_xe:3.7.0xas:*:*:*:*:*:*:* |
cisco | ios_xe | 3.7.0xbs | cpe:2.3:o:cisco:ios_xe:3.7.0xbs:*:*:*:*:*:*:* |
cisco | ios_xe | 3.7.1as | cpe:2.3:o:cisco:ios_xe:3.7.1as:*:*:*:*:*:*:* |
cisco | ios_xe | 3.7.1s | cpe:2.3:o:cisco:ios_xe:3.7.1s:*:*:*:*:*:*:* |
cisco | ios_xe | 3.7.2s | cpe:2.3:o:cisco:ios_xe:3.7.2s:*:*:*:*:*:*:* |
cisco | ios_xe | 3.7.2ts | cpe:2.3:o:cisco:ios_xe:3.7.2ts:*:*:*:*:*:*:* |
cisco | ios_xe | 3.7.3s | cpe:2.3:o:cisco:ios_xe:3.7.3s:*:*:*:*:*:*:* |
cisco | ios_xe | 3.7.4as | cpe:2.3:o:cisco:ios_xe:3.7.4as:*:*:*:*:*:*:* |
[
{
"product": "Cisco IOS XE Software",
"vendor": "Cisco",
"versions": [
{
"status": "affected",
"version": "n/a"
}
]
}
]
More
CVSS2
Attack Vector
NETWORK
Attack Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
COMPLETE
AV:N/AC:M/Au:N/C:N/I:N/A:C
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
CHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
EPSS
Percentile
48.6%