Multiple vulnerabilities in Cisco IOS XE Software for Cisco ASR 900 Series
| Risk | Low |
| Patch available | YES |
| Number of vulnerabilities | 2 |
| CVE-ID | CVE-2020-3416 CVE-2020-3513 |
| CWE-ID | CWE-749 |
| Exploitation vector | Local |
| Public exploit | N/A |
| Vulnerable software Subscribe |
Cisco ASR 900 Series Hardware solutions / Routers & switches, VoIP, GSM, etc Cisco IOS XE Operating systems & Components / Operating system |
| Vendor | Cisco Systems, Inc |
Security Bulletin
This security bulletin contains information about 2 vulnerabilities.
1) Exposed dangerous method or function
EUVDB-ID: #VU47212
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-2020-3416
CWE-ID:
CWE-749 - Exposed Dangerous Method or Function
Exploit availability: No
DescriptionThe vulnerability allows a local user to execute arbitrary code at bootup and break the chain of trust.
The vulnerability exists due to incorrect validations by boot scripts when specific ROM monitor (ROMMON) variables are set. A local administrator can copy a specific file to the local file system, define specific ROMMON variables and run arbitrary code on the system with root privileges.
Install updates from vendor's website.
Vulnerable software versionsCisco ASR 900 Series: All versions
Cisco IOS XE: 17.2
External linksQ & 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.
How the attacker can exploit this vulnerability?
The attacker would have to send a specially crafted request to the affected device in order to exploit this vulnerability.
The attacker would have to login to the system and perform certain actions in order to exploit this vulnerability.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
2) Exposed dangerous method or function
EUVDB-ID: #VU47213
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-2020-3513
CWE-ID:
CWE-749 - Exposed Dangerous Method or Function
Exploit availability: No
DescriptionThe vulnerability allows a local user to execute arbitrary code at bootup and break the chain of trust.
The vulnerability exists due to incorrect validations by boot scripts when specific ROM monitor (ROMMON) variables are set. A local administrator can copy a specific file to the local file system, define specific ROMMON variables and run arbitrary code on the system with root privileges.
Install updates from vendor's website.
Vulnerable software versionsCisco ASR 900 Series: All versions
Cisco IOS XE: 16.12.1
External linksQ & 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.
How the attacker can exploit this vulnerability?
The attacker would have to send a specially crafted request to the affected device in order to exploit this vulnerability.
The attacker would have to login to the system and perform certain actions in order to exploit this vulnerability.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
