CVSS2
Attack Vector
LOCAL
Attack Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
COMPLETE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
AV:L/AC:M/Au:N/C:C/I:C/A:C
CVSS3
Attack Vector
PHYSICAL
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
AI Score
Confidence
High
EPSS
Percentile
34.3%
A vulnerability in the boot logic of Cisco IOS XE Software could allow an authenticated, local attacker with level 15 privileges or an unauthenticated attacker with physical access to execute arbitrary code on the underlying Linux operating system of an affected device. This vulnerability is due to incorrect validations of specific function arguments that are passed to the boot script. An attacker could exploit this vulnerability by tampering with a specific file, which an affected device would process during the initial boot process. On systems that are protected by the Unified Extensible Firmware Interface (UEFI) secure boot feature, a successful exploit could allow the attacker to execute unsigned code at boot time and bypass the image verification check in the secure boot process of the affected device.
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"
}
]
}
]
CVSS2
Attack Vector
LOCAL
Attack Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
COMPLETE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
AV:L/AC:M/Au:N/C:C/I:C/A:C
CVSS3
Attack Vector
PHYSICAL
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
AI Score
Confidence
High
EPSS
Percentile
34.3%