CVE-2020-3234: Cisco IOS Software for Cisco Industrial Routers Virtual Device Server Static Credentials Vulnerability
First published: Wed Jun 03 2020(Updated: )
A vulnerability in the virtual console authentication of Cisco IOS Software for Cisco 809 and 829 Industrial Integrated Services Routers (Industrial ISRs) and Cisco 1000 Series Connected Grid Routers (CGR1000) could allow an authenticated but low-privileged, local attacker to log in to the Virtual Device Server (VDS) of an affected device by using a set of default credentials. The vulnerability is due to the presence of weak, hard-coded credentials. An attacker could exploit this vulnerability by authenticating to the targeted device and then connecting to VDS through the device’s virtual console by using the static credentials. A successful exploit could allow the attacker to access the Linux shell of VDS as the root user.
Credit: ykramarz@cisco.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Cisco IOS | =12.2\(60\)ez16 | |
| Cisco IOS | =15.0\(2\)sg11a | |
| Cisco IOS | =15.3\(3\)jaa1 | |
| Cisco IOS | =15.3\(3\)jpj | |
| Cisco IOS | =15.4\(1\)cg | |
| Cisco IOS | =15.4\(2\)cg | |
| Cisco IOS | =15.4\(3\)m | |
| Cisco IOS | =15.4\(3\)m1 | |
| Cisco IOS | =15.4\(3\)m2 | |
| Cisco IOS | =15.4\(3\)m3 | |
| Cisco IOS | =15.4\(3\)m4 | |
| Cisco IOS | =15.4\(3\)m5 | |
| Cisco IOS | =15.4\(3\)m6 | |
| Cisco IOS | =15.4\(3\)m6a | |
| Cisco IOS | =15.4\(3\)m7 | |
| Cisco IOS | =15.4\(3\)m8 | |
| Cisco IOS | =15.4\(3\)m9 | |
| Cisco IOS | =15.4\(3\)m10 | |
| Cisco IOS | =15.5\(1\)t | |
| Cisco IOS | =15.5\(1\)t2 | |
| Cisco IOS | =15.5\(1\)t3 | |
| Cisco IOS | =15.5\(1\)t4 | |
| Cisco IOS | =15.5\(2\)t | |
| Cisco IOS | =15.5\(2\)t1 | |
| Cisco IOS | =15.5\(2\)t2 | |
| Cisco IOS | =15.5\(2\)t3 | |
| Cisco IOS | =15.5\(2\)t4 | |
| Cisco IOS | =15.5\(3\)m | |
| Cisco IOS | =15.5\(3\)m0a | |
| Cisco IOS | =15.5\(3\)m1 | |
| Cisco IOS | =15.5\(3\)m2 | |
| Cisco IOS | =15.5\(3\)m2a | |
| Cisco IOS | =15.5\(3\)m3 | |
| Cisco IOS | =15.5\(3\)m4 | |
| Cisco IOS | =15.5\(3\)m4a | |
| Cisco IOS | =15.5\(3\)m5 | |
| Cisco IOS | =15.5\(3\)m6 | |
| Cisco IOS | =15.5\(3\)m6a | |
| Cisco IOS | =15.5\(3\)m7 | |
| Cisco IOS | =15.5\(3\)m8 | |
| Cisco IOS | =15.5\(3\)m9 | |
| Cisco IOS | =15.5\(3\)m10 | |
| Cisco IOS | =15.5\(3\)m11 | |
| Cisco IOS | =15.6\(1\)t | |
| Cisco IOS | =15.6\(1\)t0a | |
| Cisco IOS | =15.6\(1\)t1 | |
| Cisco IOS | =15.6\(1\)t2 | |
| Cisco IOS | =15.6\(1\)t3 | |
| Cisco IOS | =15.6\(2\)t | |
| Cisco IOS | =15.6\(2\)t1 | |
| Cisco IOS | =15.6\(2\)t2 | |
| Cisco IOS | =15.6\(2\)t3 | |
| Cisco IOS | =15.6\(3\)m | |
| Cisco IOS | =15.6\(3\)m0a | |
| Cisco IOS | =15.6\(3\)m1 | |
| Cisco IOS | =15.6\(3\)m1b | |
| Cisco IOS | =15.6\(3\)m2 | |
| Cisco IOS | =15.6\(3\)m3 | |
| Cisco IOS | =15.6\(3\)m3a | |
| Cisco IOS | =15.6\(3\)m4 | |
| Cisco IOS | =15.6\(3\)m5 | |
| Cisco IOS | =15.6\(3\)m6 | |
| Cisco IOS | =15.6\(3\)m6a | |
| Cisco IOS | =15.6\(3\)m6b | |
| Cisco IOS | =15.6\(3\)m7 | |
| Cisco IOS | =15.6\(3\)m8 | |
| Cisco IOS | =15.6\(3\)m9 | |
| Cisco IOS | =15.7\(3\)m | |
| Cisco IOS | =15.7\(3\)m1 | |
| Cisco IOS | =15.7\(3\)m2 | |
| Cisco IOS | =15.7\(3\)m3 | |
| Cisco IOS | =15.7\(3\)m4 | |
| Cisco IOS | =15.7\(3\)m4a | |
| Cisco IOS | =15.7\(3\)m4b | |
| Cisco IOS | =15.7\(3\)m5 | |
| Cisco IOS | =15.7\(3\)m6 | |
| Cisco IOS | =15.7\(3\)m7 | |
| Cisco IOS | =15.8\(3\)m | |
| Cisco IOS | =15.8\(3\)m0a | |
| Cisco IOS | =15.8\(3\)m1 | |
| Cisco IOS | =15.8\(3\)m2 | |
| Cisco IOS | =15.8\(3\)m2a | |
| Cisco IOS | =15.8\(3\)m3 | |
| Cisco IOS | =15.8\(3\)m3a | |
| Cisco IOS | =15.8\(3\)m3b | |
| Cisco IOS | =15.8\(3\)m4 | |
| Cisco IOS | =15.8\(3\)m5 | |
| Cisco 1120 Firmware | ||
| Cisco Aironet AP1240 | ||
| Cisco IR809G-LTE-GA-K9 | ||
| Cisco 829 |
Never miss a vulnerability like this again
Sign up to SecAlerts for real-time vulnerability data matched to your software, aggregated from hundreds of sources.
Reference Links
Frequently Asked Questions
What is the severity of CVE-2020-3234?
The severity of CVE-2020-3234 is classified as medium.
Who is affected by CVE-2020-3234?
CVE-2020-3234 affects Cisco IOS Software versions specifically on Cisco 809 and 829 Industrial Integrated Services Routers and Cisco 1000 Series Connected Grid Routers.
What is the potential impact of CVE-2020-3234?
CVE-2020-3234 could allow an authenticated low-privileged local attacker to log in to the affected systems.
How do I fix CVE-2020-3234?
To fix CVE-2020-3234, users should upgrade to the patched versions of Cisco IOS Software as recommended by Cisco.
Is there a workaround for CVE-2020-3234?
There are no known workarounds for CVE-2020-3234; upgrading to a secure version is the recommended action.
- agent/type
- agent/title
- agent/weakness
- agent/author
- agent/severity
- agent/remedy
- agent/references
- agent/description
- agent/first-publish-date
- agent/event
- collector/mitre-cve
- source/MITRE
- agent/last-modified-date
- agent/source
- agent/softwarecombine
- agent/tags
- collector/nvd-index
- agent/software-canonical-lookup-request
- vendor/cisco
- canonical/puppet cisco ios
- version/puppet cisco ios/12.2\(60\)ez16
- version/puppet cisco ios/15.0\(2\)sg11a
- version/puppet cisco ios/15.3\(3\)jaa1
- version/puppet cisco ios/15.3\(3\)jpj
- version/puppet cisco ios/15.4\(1\)cg
- version/puppet cisco ios/15.4\(2\)cg
- version/puppet cisco ios/15.4\(3\)m
- version/puppet cisco ios/15.4\(3\)m1
- version/puppet cisco ios/15.4\(3\)m2
- version/puppet cisco ios/15.4\(3\)m3
- version/puppet cisco ios/15.4\(3\)m4
- version/puppet cisco ios/15.4\(3\)m5
- version/puppet cisco ios/15.4\(3\)m6
- version/puppet cisco ios/15.4\(3\)m6a
- version/puppet cisco ios/15.4\(3\)m7
- version/puppet cisco ios/15.4\(3\)m8
- version/puppet cisco ios/15.4\(3\)m9
- version/puppet cisco ios/15.4\(3\)m10
- version/puppet cisco ios/15.5\(1\)t
- version/puppet cisco ios/15.5\(1\)t2
- version/puppet cisco ios/15.5\(1\)t3
- version/puppet cisco ios/15.5\(1\)t4
- version/puppet cisco ios/15.5\(2\)t
- version/puppet cisco ios/15.5\(2\)t1
- version/puppet cisco ios/15.5\(2\)t2
- version/puppet cisco ios/15.5\(2\)t3
- version/puppet cisco ios/15.5\(2\)t4
- version/puppet cisco ios/15.5\(3\)m
- version/puppet cisco ios/15.5\(3\)m0a
- version/puppet cisco ios/15.5\(3\)m1
- version/puppet cisco ios/15.5\(3\)m2
- version/puppet cisco ios/15.5\(3\)m2a
- version/puppet cisco ios/15.5\(3\)m3
- version/puppet cisco ios/15.5\(3\)m4
- version/puppet cisco ios/15.5\(3\)m4a
- version/puppet cisco ios/15.5\(3\)m5
- version/puppet cisco ios/15.5\(3\)m6
- version/puppet cisco ios/15.5\(3\)m6a
- version/puppet cisco ios/15.5\(3\)m7
- version/puppet cisco ios/15.5\(3\)m8
- version/puppet cisco ios/15.5\(3\)m9
- version/puppet cisco ios/15.5\(3\)m10
- version/puppet cisco ios/15.5\(3\)m11
- version/puppet cisco ios/15.6\(1\)t
- version/puppet cisco ios/15.6\(1\)t0a
- version/puppet cisco ios/15.6\(1\)t1
- version/puppet cisco ios/15.6\(1\)t2
- version/puppet cisco ios/15.6\(1\)t3
- version/puppet cisco ios/15.6\(2\)t
- version/puppet cisco ios/15.6\(2\)t1
- version/puppet cisco ios/15.6\(2\)t2
- version/puppet cisco ios/15.6\(2\)t3
- version/puppet cisco ios/15.6\(3\)m
- version/puppet cisco ios/15.6\(3\)m0a
- version/puppet cisco ios/15.6\(3\)m1
- version/puppet cisco ios/15.6\(3\)m1b
- version/puppet cisco ios/15.6\(3\)m2
- version/puppet cisco ios/15.6\(3\)m3
- version/puppet cisco ios/15.6\(3\)m3a
- version/puppet cisco ios/15.6\(3\)m4
- version/puppet cisco ios/15.6\(3\)m5
- version/puppet cisco ios/15.6\(3\)m6
- version/puppet cisco ios/15.6\(3\)m6a
- version/puppet cisco ios/15.6\(3\)m6b
- version/puppet cisco ios/15.6\(3\)m7
- version/puppet cisco ios/15.6\(3\)m8
- version/puppet cisco ios/15.6\(3\)m9
- version/puppet cisco ios/15.7\(3\)m
- version/puppet cisco ios/15.7\(3\)m1
- version/puppet cisco ios/15.7\(3\)m2
- version/puppet cisco ios/15.7\(3\)m3
- version/puppet cisco ios/15.7\(3\)m4
- version/puppet cisco ios/15.7\(3\)m4a
- version/puppet cisco ios/15.7\(3\)m4b
- version/puppet cisco ios/15.7\(3\)m5
- version/puppet cisco ios/15.7\(3\)m6
- version/puppet cisco ios/15.7\(3\)m7
- version/puppet cisco ios/15.8\(3\)m
- version/puppet cisco ios/15.8\(3\)m0a
- version/puppet cisco ios/15.8\(3\)m1
- version/puppet cisco ios/15.8\(3\)m2
- version/puppet cisco ios/15.8\(3\)m2a
- version/puppet cisco ios/15.8\(3\)m3
- version/puppet cisco ios/15.8\(3\)m3a
- version/puppet cisco ios/15.8\(3\)m3b
- version/puppet cisco ios/15.8\(3\)m4
- version/puppet cisco ios/15.8\(3\)m5
- canonical/cisco 1120 firmware
- canonical/cisco aironet ap1240
- canonical/cisco ir809g-lte-ga-k9
- canonical/cisco 829