CVE-2021-1539: Cisco ASR 5000 Series Software Authorization Bypass Vulnerabilities
First published: Fri Jun 04 2021(Updated: )
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.
Credit: ykramarz@cisco.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Cisco StarOS | <21.16.9 | |
| Cisco StarOS | >=21.17.0<21.17.10 | |
| Cisco StarOS | >=21.18.0<21.18.16 | |
| Cisco StarOS | >=21.19.0<21.19.11 | |
| Cisco StarOS | >=21.19.n<21.19.n7 | |
| Cisco StarOS | >=21.20.0<21.20.8 | |
| Cisco ASR 5000 | ||
| Cisco ASR 5500 | ||
| Cisco Asr 5700 | ||
| Cisco Virtualized Packet Core |
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Reference Links
Frequently Asked Questions
What is CVE-2021-1539?
CVE-2021-1539 is a vulnerability in the authorization process of Cisco ASR 5000 Series Software (StarOS) that could allow an authenticated, remote attacker to bypass authorization and execute a subset of CLI commands on an affected device.
What is the severity of CVE-2021-1539?
CVE-2021-1539 has a severity score of 8.8 (high).
How does CVE-2021-1539 affect Cisco ASR 5000 Series Software (StarOS)?
CVE-2021-1539 affects Cisco ASR 5000 Series Software (StarOS) versions 21.16.9 to 21.20.8.
How can an attacker exploit CVE-2021-1539?
An authenticated, remote attacker can exploit CVE-2021-1539 by bypassing authorization and executing a subset of CLI commands on an affected device.
Is there a fix available for CVE-2021-1539?
Yes, Cisco has released software updates to address CVE-2021-1539. It is recommended to update to the latest available version.
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- canonical/cisco staros
- version/cisco staros/21.17.0
- version/cisco staros/21.18.0
- version/cisco staros/21.19.0
- version/cisco staros/21.19.n
- version/cisco staros/21.20.0
- canonical/cisco asr 5000
- canonical/cisco asr 5500
- canonical/cisco asr 5700
- canonical/cisco virtualized packet core