CVE-2020-3257: Buffer Overflow
First published: Wed Jun 03 2020(Updated: )
Multiple vulnerabilities in the Cisco IOx application environment of Cisco 809 and 829 Industrial Integrated Services Routers (Industrial ISRs) and Cisco 1000 Series Connected Grid Routers (CGR1000) that are running Cisco IOS Software could allow an attacker to cause a denial of service (DoS) condition or execute arbitrary code with elevated privileges on an affected device. For more information about these vulnerabilities, see the Details section of this advisory.
Credit: ykramarz@cisco.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Cisco IOS | =15.8\(3.0z\)m1 | |
| Cisco IOS | =15.9 | |
| Cisco 1120 Connected Grid Router | ||
| Cisco 1240 Connected Grid Router | ||
| Cisco Ir809g-lte-ga-k9 | ||
| Cisco Ir809g-lte-la-k9 | ||
| Cisco Ir809g-lte-na-k9 | ||
| Cisco Ir809g-lte-vz-k9 | ||
| Cisco Ir829-2lte-ea-ak9 | ||
| Cisco Ir829-2lte-ea-bk9 | ||
| Cisco Ir829-2lte-ea-ek9 | ||
| Cisco Ir829gw-lte-ga-ck9 | ||
| Cisco Ir829gw-lte-ga-ek9 | ||
| Cisco Ir829gw-lte-ga-sk9 | ||
| Cisco Ir829gw-lte-ga-zk9 | ||
| Cisco Ir829gw-lte-na-ak9 | ||
| Cisco Ir829gw-lte-vz-ak9 |
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Reference Links
Frequently Asked Questions
What is the severity of CVE-2020-3257?
The severity of CVE-2020-3257 is high with a CVSS score of 8.1.
What is the affected software for CVE-2020-3257?
The affected software for CVE-2020-3257 includes Cisco 809 and 829 Industrial Integrated Services Routers (Industrial ISRs) and Cisco 1000 Series Connected Grid Routers (CGR1000) running Cisco IOS Software versions 15.8(3.0z)m1 and 15.9.
What is the vulnerability description of CVE-2020-3257?
CVE-2020-3257 is a vulnerability in the Cisco IOx application environment of Cisco 809 and 829 Industrial Integrated Services Routers (Industrial ISRs) and Cisco 1000 Series Connected Grid Routers (CGR1000) running Cisco IOS Software that could allow an attacker to cause a denial of service (DoS) condition.
How can an attacker exploit CVE-2020-3257?
An attacker can exploit CVE-2020-3257 by sending malicious requests to a vulnerable device, causing a denial of service (DoS) condition.
Is there a fix available for CVE-2020-3257?
Yes, Cisco has released software updates to address the vulnerability. It is recommended to update to the fixed software version to mitigate the risk.
- agent/severity
- agent/weakness
- agent/references
- agent/author
- agent/type
- agent/tags
- agent/event
- agent/description
- agent/last-modified-date
- agent/remedy
- agent/softwarecombine
- agent/first-publish-date
- collector/nvd-index
- agent/software-canonical-lookup-request
- vendor/cisco
- canonical/cisco ios
- version/cisco ios/15.8\(3.0z\)m1
- version/cisco ios/15.9
- canonical/cisco 1120 connected grid router
- canonical/cisco 1240 connected grid router
- canonical/cisco ir809g-lte-ga-k9
- canonical/cisco ir809g-lte-la-k9
- canonical/cisco ir809g-lte-na-k9
- canonical/cisco ir809g-lte-vz-k9
- canonical/cisco ir829-2lte-ea-ak9
- canonical/cisco ir829-2lte-ea-bk9
- canonical/cisco ir829-2lte-ea-ek9
- canonical/cisco ir829gw-lte-ga-ck9
- canonical/cisco ir829gw-lte-ga-ek9
- canonical/cisco ir829gw-lte-ga-sk9
- canonical/cisco ir829gw-lte-ga-zk9
- canonical/cisco ir829gw-lte-na-ak9
- canonical/cisco ir829gw-lte-vz-ak9