CVE-2019-12649 : A vulnerability in the Image Verification feature of Cisco IOS XE Software could

A vulnerability in the Image Verification feature of Cisco IOS XE Software could allow an authenticated, local attacker to install and boot a malicious software image or execute unsigned binaries on an affected device. The vulnerability exists because, under certain circumstances, an affected device can be configured to not verify the digital signatures of system image files during the boot process. An attacker could exploit this vulnerability by abusing a specific feature that is part of the device boot process. A successful exploit could allow the attacker to install and boot a malicious software image or execute unsigned binaries on the targeted device.

Published 2019-09-25 20:15:11

Updated 2019-10-09 23:45:57

Source Cisco Systems, Inc.

View at NVD, CVE.org

Products affected by CVE-2019-12649

Cisco » IOS » Version: 16.9.1
cpe:2.3:o:cisco:ios:16.9.1:*:*:*:*:*:*:*
Matching versions
Cisco » Ios Xe » Version: 16.8(1)
cpe:2.3:o:cisco:ios_xe:16.8\(1\):*:*:*:*:*:*:*
Matching versions
When used together with: Cisco » Catalyst 3850-12s-e » Version: N/A
When used together with: Cisco » Catalyst 3850-12s-s » Version: N/A
When used together with: Cisco » Catalyst 3850-12xs-e » Version: N/A
When used together with: Cisco » Catalyst 3850-12xs-s » Version: N/A
When used together with: Cisco » Catalyst 3850-16xs-e » Version: N/A
When used together with: Cisco » Catalyst 3850-16xs-s » Version: N/A
When used together with: Cisco » Catalyst 3850-24p-e » Version: N/A
When used together with: Cisco » Catalyst 3850-24p-l » Version: N/A
When used together with: Cisco » Catalyst 3850-24p-s » Version: N/A
When used together with: Cisco » Catalyst 3850-24pw-s » Version: N/A
When used together with: Cisco » Catalyst 3850-24s-e » Version: N/A
When used together with: Cisco » Catalyst 3850-24s-s » Version: N/A
When used together with: Cisco » Catalyst 3850-24t-e » Version: N/A
When used together with: Cisco » Catalyst 3850-24t-l » Version: N/A
When used together with: Cisco » Catalyst 3850-24t-s » Version: N/A
When used together with: Cisco » Catalyst 3850-24u-e » Version: N/A
When used together with: Cisco » Catalyst 3850-24u-l » Version: N/A
When used together with: Cisco » Catalyst 3850-24u-s » Version: N/A
When used together with: Cisco » Catalyst 3850-24xs-e » Version: N/A
When used together with: Cisco » Catalyst 3850-24xs-s » Version: N/A
When used together with: Cisco » Catalyst 3850-24xu-e » Version: N/A
When used together with: Cisco » Catalyst 3850-24xu-l » Version: N/A
When used together with: Cisco » Catalyst 3850-24xu-s » Version: N/A
When used together with: Cisco » Catalyst 3850-32xs-e » Version: N/A
When used together with: Cisco » Catalyst 3850-32xs-s » Version: N/A
When used together with: Cisco » Catalyst 3850-48f-e » Version: N/A
When used together with: Cisco » Catalyst 3850-48f-l » Version: N/A
When used together with: Cisco » Catalyst 3850-48f-s » Version: N/A
When used together with: Cisco » Catalyst 3850-48p-e » Version: N/A
When used together with: Cisco » Catalyst 3850-48p-l » Version: N/A
When used together with: Cisco » Catalyst 3850-48p-s » Version: N/A
When used together with: Cisco » Catalyst 3850-48pw-s » Version: N/A
When used together with: Cisco » Catalyst 3850-48t-e » Version: N/A
When used together with: Cisco » Catalyst 3850-48t-l » Version: N/A
When used together with: Cisco » Catalyst 3850-48t-s » Version: N/A
When used together with: Cisco » Catalyst 3850-48u-e » Version: N/A
When used together with: Cisco » Catalyst 3850-48u-l » Version: N/A
When used together with: Cisco » Catalyst 3850-48u-s » Version: N/A
When used together with: Cisco » Catalyst 3850-48xs-e » Version: N/A
When used together with: Cisco » Catalyst 3850-48xs-f-e » Version: N/A
When used together with: Cisco » Catalyst 3850-48xs-f-s » Version: N/A
When used together with: Cisco » Catalyst 3850-48xs-s » Version: N/A
When used together with: Cisco » Catalyst 9300 » Version: N/A
When used together with: Cisco » Catalyst 9300-24p-a » Version: N/A
When used together with: Cisco » Catalyst 9300-24p-e » Version: N/A
When used together with: Cisco » Catalyst 9300-24s-a » Version: N/A
When used together with: Cisco » Catalyst 9300-24s-e » Version: N/A
When used together with: Cisco » Catalyst 9300-24t-a » Version: N/A
When used together with: Cisco » Catalyst 9300-24t-e » Version: N/A
When used together with: Cisco » Catalyst 9300-24u-a » Version: N/A
When used together with: Cisco » Catalyst 9300-24u-e » Version: N/A
When used together with: Cisco » Catalyst 9300-24ux-a » Version: N/A
When used together with: Cisco » Catalyst 9300-24ux-e » Version: N/A
When used together with: Cisco » Catalyst 9300-48p-a » Version: N/A
When used together with: Cisco » Catalyst 9300-48p-e » Version: N/A
When used together with: Cisco » Catalyst 9300-48s-a » Version: N/A
When used together with: Cisco » Catalyst 9300-48s-e » Version: N/A
When used together with: Cisco » Catalyst 9300-48t-a » Version: N/A
When used together with: Cisco » Catalyst 9300-48t-e » Version: N/A
When used together with: Cisco » Catalyst 9300-48u-a » Version: N/A
When used together with: Cisco » Catalyst 9300-48u-e » Version: N/A
When used together with: Cisco » Catalyst 9300-48un-a » Version: N/A
When used together with: Cisco » Catalyst 9300-48un-e » Version: N/A
When used together with: Cisco » Catalyst 9300-48uxm-a » Version: N/A
When used together with: Cisco » Catalyst 9300-48uxm-e » Version: N/A
When used together with: Cisco » Catalyst 9300l » Version: N/A
When used together with: Cisco » Catalyst 9300l-24p-4g-a » Version: N/A
When used together with: Cisco » Catalyst 9300l-24p-4g-e » Version: N/A
When used together with: Cisco » Catalyst 9300l-24p-4x-a » Version: N/A
When used together with: Cisco » Catalyst 9300l-24p-4x-e » Version: N/A
When used together with: Cisco » Catalyst 9300l-24t-4g-a » Version: N/A
When used together with: Cisco » Catalyst 9300l-24t-4g-e » Version: N/A
When used together with: Cisco » Catalyst 9300l-24t-4x-a » Version: N/A
When used together with: Cisco » Catalyst 9300l-24t-4x-e » Version: N/A
When used together with: Cisco » Catalyst 9300l-48p-4g-a » Version: N/A
When used together with: Cisco » Catalyst 9300l-48p-4g-e » Version: N/A
When used together with: Cisco » Catalyst 9300l-48p-4x-a » Version: N/A
When used together with: Cisco » Catalyst 9300l-48p-4x-e » Version: N/A
When used together with: Cisco » Catalyst 9300l-48t-4g-a » Version: N/A
When used together with: Cisco » Catalyst 9300l-48t-4g-e » Version: N/A
When used together with: Cisco » Catalyst 9300l-48t-4x-a » Version: N/A
When used together with: Cisco » Catalyst 9300l-48t-4x-e » Version: N/A
When used together with: Cisco » Catalyst C3850-12x48u-e » Version: N/A
When used together with: Cisco » Catalyst C3850-12x48u-l » Version: N/A
When used together with: Cisco » Catalyst C3850-12x48u-s » Version: N/A

Exploit prediction scoring system (EPSS) score for CVE-2019-12649

EPSS FAQ

0.04%

Probability of exploitation activity in the next 30 days EPSS Score History

~ 6 %

Percentile, the proportion of vulnerabilities that are scored at or less

CVSS scores for CVE-2019-12649

Base Score	Base Severity	CVSS Vector	Exploitability Score	Impact Score	Score Source
7.2	HIGH	AV:L/AC:L/Au:N/C:C/I:C/A:C	3.9	10.0	NIST
Access Vector: Local Access Complexity: Low Authentication: None Confidentiality Impact: Complete Integrity Impact: Complete Availability Impact: Complete
6.7	MEDIUM	CVSS:3.0/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H	0.8	5.9	Cisco Systems, Inc.
Attack Vector: Local Attack Complexity: Low Privileges Required: High User Interaction: None Scope: Unchanged Confidentiality: High Integrity: High Availability: High
6.7	MEDIUM	CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H	0.8	5.9	NIST
Attack Vector: Local Attack Complexity: Low Privileges Required: High User Interaction: None Scope: Unchanged Confidentiality: High Integrity: High Availability: High

CWE ids for CVE-2019-12649

CWE-347 Improper Verification of Cryptographic Signature

The product does not verify, or incorrectly verifies, the cryptographic signature for data.
Assigned by:
- nvd@nist.gov (Primary)
- ykramarz@cisco.com (Secondary)

References for CVE-2019-12649

https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190925-iosxe-digsig-bypass

Cisco IOS XE Software Digital Signature Verification Bypass Vulnerability
Vendor Advisory

Jump to

Vulnerability Details : CVE-2019-12649

Products affected by CVE-2019-12649

Exploit prediction scoring system (EPSS) score for CVE-2019-12649

CVSS scores for CVE-2019-12649

CWE ids for CVE-2019-12649

References for CVE-2019-12649