CVE-2021-1540 Cisco ASR 5000 Series Software Authorization Bypass Vulnerabilities
Authenticated remote attackers can bypass authorization to execute a subset of CLI commands on Cisco ASR 5000 devices.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2021-1540?
CVE-2021-1540 is a high-severity missing authorization vulnerability in Cisco ASR 5000 Series Software, published on 4 Jun 2021. Any signed-in user can exploit it over the network, with no action from the victim.
Official 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.
Weakness: CWE-863
Which versions are affected by CVE-2021-1540?
It affects 2 products.
Products include Cisco Staros, Cisco Virtualized Packet Core.
How do I fix CVE-2021-1540?
No fix has been published for CVE-2021-1540 yet. Limit exposure of the affected software until one is available.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2021-1540 being exploited?
There is no known exploitation of CVE-2021-1540 in the wild and no public exploit code.
Other vulnerabilities in Cisco ASR 5000 Series Software
- CVE-2023-20046 Auth bypass in Cisco ASR 5000 Series Software
- CVE-2019-1869 Cisco StarOS Denial of Service Vulnerability
- CVE-2018-0369 Denial of service in Cisco StarOS unknown
- CVE-2017-6707 Command injection in Cisco StarOS
- CVE-2021-1539 Cisco ASR 5000 Series Software Authorization Bypass Vulnerabilities
Sources
Also known as GHSA-f834-hxf4-wmxm.