CVE-2021-1540— Cisco ASR 5000 Series Software Authorization Bypass Vulnerabilities
Quick assessment
Affected
Cisco Cisco ASR 5000 Series Software
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.
Cisco ASR 5000是美国思科（Cisco）公司的一款5000系列网关产品。 Cisco ASR 5000 Series 所有版本存在授权问题漏洞，该漏洞允许远程用户获得对系统的未经授权的访问。
Possible ATT&CK Techniques 1 AI
T1068 · Exploitation for Privilege Escalation
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I. Basic Information for CVE-2021-1540
Vulnerability Information
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Vulnerability Title
Cisco ASR 5000 Series Software Authorization Bypass Vulnerabilities
Source: CVE Program / CVE List V5
Vulnerability Description
Multiple vulnerabilities in the authorization process of Cisco ASR 5000 Series Software (StarOS) could allow an authenticated, remote attacker to bypass authorization and execute a subset of CLI commands on an affected device. For more information about these vulnerabilities, see the Details section of this advisory.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
授权机制不正确
Source: CVE Program / CVE List V5
Vulnerability Title
Cisco ASR 5000授权问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Cisco ASR 5000是美国思科（Cisco）公司的一款5000系列网关产品。 Cisco ASR 5000 Series 所有版本存在授权问题漏洞，该漏洞允许远程用户获得对系统的未经授权的访问。
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-2021-1540
| # | POC Description | Source Link | Shenlong Link |
|---|
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Vendor Advisories for CVE-2021-1540 (1)
-
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-asr5k-autho-bypass-mJDF5S7n vendor-advisory x_refsource_CISCO
Same Patch Batch · Cisco · 2021-06-04 · 15 CVEs total
| CVE-2021-1539 | 8.1 HIGH | Cisco ASR 5000 Series Software Authorization Bypass Vulnerabilities |
| CVE-2021-1528 | 7.8 HIGH | Cisco SD-WAN Software Privilege Escalation Vulnerability |
| CVE-2021-1526 | 7.8 HIGH | Cisco Webex Player Memory Corruption Vulnerability |
| CVE-2021-1503 | 7.8 HIGH | Cisco Webex Network Recording Player and Webex Player Memory Corruption Vulnerability |
| CVE-2021-1502 | 7.8 HIGH | Cisco Webex Network Recording Player and Webex Player Memory Corruption Vulnerability |
| CVE-2021-1564 | 6.5 MEDIUM | Cisco Video Surveillance 7000 Series IP Cameras Cisco Discovery and Link Layer Discovery P |
| CVE-2021-1563 | 6.5 MEDIUM | Cisco Video Surveillance 7000 Series IP Cameras Cisco Discovery and Link Layer Discovery P |
| CVE-2021-1537 | 6.2 MEDIUM | Cisco ThousandEyes Recorder Information Disclosure Vulnerability |
| CVE-2021-1544 | 5.5 MEDIUM | Cisco Webex Meetings Client Software Logging Information Disclosure Vulnerability |
| CVE-2021-1527 | 5.3 MEDIUM | Cisco Webex Player Memory Corruption Vulnerability |
| CVE-2021-1517 | 5.0 MEDIUM | Cisco Webex Meetings and Webex Meetings Server Multimedia Sharing Security Bypass Vulnerab |
| CVE-2021-1536 | 4.8 MEDIUM | Cisco Webex Meetings, Webex Network Recording Player, and Webex Teams DLL Injection Vulner |
| CVE-2021-1538 | 4.7 MEDIUM | Cisco Common Services Platform Collector Command Injection Vulnerability |
| CVE-2021-1525 | 4.7 MEDIUM | Cisco Webex Meetings and Webex Meetings Server File Redirect Vulnerability |
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-2021-1539
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Same vendor: Cisco
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V. Comments for CVE-2021-1540
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