CVE-2021-1378— Cisco StarOS Denial of Service Vulnerability
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I. Basic Information for CVE-2021-1378
Vulnerability Information
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Vulnerability Title
Cisco StarOS Denial of Service Vulnerability
Source: NVD (National Vulnerability Database)
Vulnerability Description
A vulnerability in the SSH service of the Cisco StarOS operating system could allow an unauthenticated, remote attacker to cause an affected device to stop processing traffic, resulting in a denial of service (DoS) condition. The vulnerability is due to a logic error that may occur under specific traffic conditions. An attacker could exploit this vulnerability by sending a series of crafted packets to an affected device. A successful exploit could allow the attacker to prevent the targeted service from receiving any traffic, which would lead to a DoS condition on the affected device.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Source: NVD (National Vulnerability Database)
Vulnerability Type
未加控制的资源消耗(资源穷尽)
Source: NVD (National Vulnerability Database)
Vulnerability Title
Cisco StarOS operating system 资源管理错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Cisco StarOS operating system是美国Cisco公司的一个操作系统。为移动分组核心网提供订户管理服务。 Cisco StarOS operating system中存在资源管理错误漏洞，该漏洞源于网络系统或产品对系统资源（如内存、磁盘空间、文件等）的管理不当。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| Cisco | Cisco ASR 5000 Series Software | n/a | - |
II. Public POCs for CVE-2021-1378
| # | POC Description | Source Link | Shenlong Link |
|---|
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- https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-StarOS-DoS-RLLvGFJjvendor-advisoryx_refsource_CISCO
- https://nvd.nist.gov/vuln/detail/CVE-2021-1378
Same Patch Batch · Cisco · 2021-02-17 · 6 CVEs total
| CVE-2021-1366 | 7.8 HIGH | Cisco AnyConnect Secure Mobility Client for Windows with VPN Posture (HostScan) Module DLL |
| CVE-2021-1412 | 6.5 MEDIUM | Cisco Identity Services Engine Sensitive Information Disclosure Vulnerabilities |
| CVE-2021-1416 | 6.5 MEDIUM | Cisco Identity Services Engine Sensitive Information Disclosure Vulnerabilities |
| CVE-2021-1351 | 6.1 MEDIUM | Cisco Webex Meetings Cross-Site Scripting Vulnerability |
| CVE-2021-1372 | 5.5 MEDIUM | Cisco Webex Meetings Desktop App and Webex Productivity Tools for Windows Shared Memory In |
IV. Related Vulnerabilities
Same product: Cisco ASR 5000 Series Software
- CVE-2021-1424
Cisco ASR 5000 Series Software (StarOS) ipsecmgr Process De - CVE-2023-20046
Cisco StarOS 安全漏洞 - CVE-2023-20051
Cisco Packet Data Network Gateway IPsec ICMP Denial of Servi - CVE-2022-20665
Cisco StarOS Command Injection Vulnerability - CVE-2021-1540
Cisco ASR 5000 Series Software Authorization Bypass Vulnerab
Same vendor: Cisco
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Cisco Unity Connection Server-Side Request Forgery Vulnerabi - CVE-2026-20167
Cisco IoT Field Network Director Remote Device Denial of Ser - CVE-2026-20169
Cisco IoT Field Network Director Command Injection Vulnerabi
Same weakness: CWE-400
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Open5GS UPF gtp-path.c _gtpv1_u_recv_cb resource consumption - CVE-2026-42343
FastGPT: Uncontrolled Resource Consumption leading to Sandbo - CVE-2026-42212
SolidCAM-GPPL-IDE: XML External Entity (XXE) and billion-lau - CVE-2026-32686
Unbounded exponent in decimal enables unauthenticated DoS - CVE-2026-20188
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V. Comments for CVE-2021-1378
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