Cisco IOS XE Image Verification Digital Signature signature verification

CVSS Meta Temp Score
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CTI Interest Score
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6.2$0-$5k0.00

A vulnerability classified as critical was found in Cisco IOS XE (Router Operating System) (unknown version). Affected by this vulnerability is an unknown code block of the component Image Verification. The manipulation as part of a Digital Signature leads to a signature verification vulnerability. The CWE definition for the vulnerability is CWE-347. The product does not verify, or incorrectly verifies, the cryptographic signature for data. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

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.

The weakness was presented 09/25/2019 as cisco-sa-20190925-iosxe-digsig as confirmed advisory (Website). The advisory is shared at tools.cisco.com. This vulnerability is known as CVE-2019-12649 since 06/04/2019. An attack has to be approached locally. The requirement for exploitation is a single authentication. Neither technical details nor an exploit are publicly available.

Upgrading eliminates this vulnerability.

Productinfo

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License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB CVSS-B Score: 🔍
VulDB CVSS-BT Score: 🔍
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.2
VulDB Meta Temp Score: 6.2

VulDB Base Score: 5.3
VulDB Temp Score: 5.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 6.7
NVD Vector: 🔍

CNA Base Score: 6.7
CNA Vector (Cisco Systems, Inc.): 🔍

CVSSv2info

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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Signature verification
CWE: CWE-347 / CWE-345
CAPEC: 🔍
ATT&CK: 🔍

Local: Yes
Remote: No

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Timelineinfo

06/04/2019 🔍
09/25/2019 +113 days 🔍
09/26/2019 +1 days 🔍
12/28/2023 +1554 days 🔍

Sourcesinfo

Vendor: cisco.com

Advisory: cisco-sa-20190925-iosxe-digsig
Status: Confirmed

CVE: CVE-2019-12649 (🔍)
scip Labs: https://www.scip.ch/en/?labs.20150108

Entryinfo

Created: 09/26/2019 12:33 PM
Updated: 12/28/2023 08:40 AM
Changes: 09/26/2019 12:33 PM (41), 06/04/2020 02:29 PM (18), 12/28/2023 08:40 AM (14)
Complete: 🔍
Cache ID: 44:986:40

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