Risk | Low |
Patch available | YES |
Number of vulnerabilities | 1 |
CVE-ID | CVE-2021-34724 |
CWE-ID | CWE-284 |
Exploitation vector | Local |
Public exploit | N/A |
Vulnerable software Subscribe |
Cisco IOS XE SD-WAN Other software / Other software solutions Cisco 1000 Series Integrated Services Routers Hardware solutions / Routers & switches, VoIP, GSM, etc Cisco 4000 Series Integrated Services Routers Hardware solutions / Routers & switches, VoIP, GSM, etc Cisco ASR 1000 Series Aggregation Services Routers Hardware solutions / Routers & switches, VoIP, GSM, etc Cisco Cloud Services Router 1000V Series Hardware solutions / Routers & switches, VoIP, GSM, etc |
Vendor | Cisco Systems, Inc |
Security Bulletin
This security bulletin contains one low risk vulnerability.
EUVDB-ID: #VU56835
Risk: Low
CVSSv3.1: 5.2 [CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:N/E:U/RL:O/RC:C]
CVE-ID: CVE-2021-34724
CWE-ID:
CWE-284 - Improper Access Control
Exploit availability: No
DescriptionThe vulnerability allows a local user to gain unauthorized access to otherwise restricted functionality.
The vulnerability exists due to insufficient file system protection and the presence of a sensitive file in the bootflash directory. A local administrator can overwrite an installer file stored in the bootflash directory with arbitrary commands to read and write changes to the configuration database on the affected device.
MitigationInstall updates from vendor's website.
Vulnerable software versionsCisco IOS XE SD-WAN: 17.3.1a
Cisco 1000 Series Integrated Services Routers: All versions
Cisco 4000 Series Integrated Services Routers: All versions
Cisco ASR 1000 Series Aggregation Services Routers: All versions
Cisco Cloud Services Router 1000V Series: All versions
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.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.