Vulnerability · Published Jun 3, 2020 · Assigned by cisco

CVE-2020-3209Cisco IOS XE Software Digital Signature Verification Bypass Vulnerability

Medium 6.8

In plain English

A medium-severity security flaw in Cisco IOS XE Software 3.2.0SG from Cisco. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 21% of all known vulnerabilities).

Severity (CVSS 3.0)6.8Medium

Exploit odds (30 days)0.3%top 79.5% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official description

A vulnerability in software image verification in Cisco IOS XE Software could allow an unauthenticated, physical attacker to install and boot a malicious software image or execute unsigned binaries on an affected device. The vulnerability is due to an improper check on the area of code that manages the verification of the digital signatures of system image files during the initial boot process. An attacker could exploit this vulnerability by loading unsigned software on an affected device. A successful exploit could allow the attacker to install and boot a malicious software image or execute unsigned binaries on the targeted device.

Affected products (as reported)

Vendor	Product	Versions
Cisco	Cisco IOS XE Software 3.2.0SG	n/a

Weakness: CWE-347 · Vector: CVSS:3.0/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

References

20200603 Cisco IOS XE Software Digital Signature Verification Bypass Vulnerability vendor-advisory, x_refsource_CISCO