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CVE-2020-3203 Details
Description
A vulnerability in the locally significant certificate (LSC) provisioning feature of Cisco Catalyst 9800 Series Wireless Controllers that are running Cisco IOS XE Software could allow an unauthenticated, remote attacker to cause a memory leak that could lead to a denial of service (DoS) condition. The vulnerability is due to incorrect processing of certain public key infrastructure (PKI) packets. An attacker could exploit this vulnerability by sending crafted Secure Sockets Layer (SSL) packets to an affected device. A successful exploit could cause an affected device to continuously consume memory, which could result in a memory allocation failure that leads to a crash and causes a DoS condition.
Metrics
CVSS 4.0 Severity and Vector Strings:
No CVSS 4.0 data is available for this CVE.
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
CISA-ADP
Assessed Nov 15, 2024Exploitation: NoneAutomatable: YesTechnical Impact: Partial
References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-iosxe-ewlc-dos-TkuPVmZN | CVE | PatchVendor Advisory |
| https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-iosxe-ewlc-dos-TkuPVmZN | [email protected] | PatchVendor Advisory |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-401 | Missing Release of Memory after Effective Lifetime | [email protected] |
| CWE-400 | Uncontrolled Resource Consumption | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| cisco ios xe | 16.1.1 16.1.2 16.1.3 16.2.1 16.2.2 16.3.1 16.3.1a 16.3.2 16.3.3 16.3.4 16.3.5 16.3.5b 16.3.6 16.3.7 16.3.8 16.3.9 16.4.1 16.4.2 16.4.3 16.5.1 16.5.1a 16.5.1b 16.5.2 16.5.3 16.7.1 16.7.2 16.7.3 16.8.1 16.8.1a 16.8.1b 16.8.1c 16.8.1s 16.8.2 16.8.3 16.10.1 16.10.1a 16.10.1b 16.10.1e 16.10.1s 16.10.2 16.10.3 16.11.1 16.11.1a 16.11.1b 16.11.1c 16.11.1s 16.12.1 16.12.1a 16.12.1c 16.12.1s 16.12.2 16.12.2a 16.12.4 16.12.8 |
CPE
Remediation
| |
| cisco catalyst 9800-40 | All versions |
CPE
Remediation
| |
| cisco catalyst 9800-80 | All versions |
CPE
Remediation
| |
| cisco catalyst 9800-cl | All versions |
CPE
Remediation
| |
| cisco catalyst 9800-l | All versions |
CPE
Remediation
| |
| cisco catalyst 9800-l-c | All versions |
CPE
Remediation
| |
| cisco catalyst 9800-l-f | All versions |
CPE
Remediation
| |
Change History
6 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jun 17, 2026 | CVE Modified | [email protected] |
| Jun 17, 2026 | CVE Modified | CISA-ADP |
| Nov 21, 2024 | CVE Modified | CVE |
| May 14, 2024 | CVE Modified | [email protected] |
| Oct 19, 2021 | Reanalysis | [email protected] |
| Jun 10, 2020 | Initial Analysis | [email protected] |