Risk | Low |
Patch available | YES |
Number of vulnerabilities | 1 |
CVE-ID | CVE-2021-1375 |
CWE-ID | CWE-347 |
Exploitation vector | Local |
Public exploit | N/A |
Vulnerable software Subscribe |
Cisco IOS XE Operating systems & Components / Operating system Cisco Catalyst 3850 Series Switches Hardware solutions / Routers & switches, VoIP, GSM, etc Cisco Catalyst 9300 Series Switches Hardware solutions / Routers & switches, VoIP, GSM, etc Cisco Catalyst 9300L Series Switches Hardware solutions / Routers & switches, VoIP, GSM, etc |
Vendor | Cisco Systems, Inc |
Security Bulletin
This security bulletin contains one low risk vulnerability.
EUVDB-ID: #VU51761
Risk: Low
CVSSv3.1: 5.8 [CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]
CVE-ID: CVE-2021-1375
CWE-ID:
CWE-347 - Improper Verification of Cryptographic Signature
Exploit availability: No
DescriptionThe vulnerability allows a local user to compromise the target system.
The vulnerability exists in the fast reload feature due to incorrect validations of parameters passed to a configuration file that is executed when the device boots up. A local administrator can tamper with a configuration file stored on a device, execute unsigned code at boot time and bypass the software image verification check.
MitigationInstall updates from vendor's website.
Vulnerable software versionsCisco IOS XE: 16.12.1
Cisco Catalyst 3850 Series Switches: All versions
Cisco Catalyst 9300 Series Switches: All versions
Cisco Catalyst 9300L Series Switches: All versions
External linkshttp://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-fast-Zqr6DD5
Q & A
Can this vulnerability be exploited remotely?
No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.