CVE-2017-6773 Command injection in StarOS for ASR 5000 Series Aggregated Services Routers
An authenticated local attacker can bypass CLI restrictions to execute arbitrary commands on the underlying operating system of Cisco ASR 5000 routers.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2017-6773?
CVE-2017-6773 is a medium-severity command injection vulnerability in Cisco Systems, Inc. StarOS for ASR 5000 Series Aggregated Services Routers, published on 17 Aug 2017. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
A vulnerability in the CLI of Cisco ASR 5000 Series Aggregated Services Routers running the Cisco StarOS operating system could allow an authenticated, local attacker to bypass the CLI restrictions and execute commands on the underlying operating system. The vulnerability is due to insufficient input sanitization of user-supplied input at the CLI. An attacker could exploit this vulnerability by crafting a script on the device that will allow them to bypass built-in restrictions. An exploit could allow the unauthorized user to launch the CLI directly from a command shell. Cisco Bug IDs: CSCvd47722. Known Affected Releases: 21.0.v0.65839.
Weakness: CWE-20
Which versions are affected by CVE-2017-6773?
It affects 1 product.
Products include Cisco Asr 5000 Software.
How do I fix CVE-2017-6773?
No fix has been published for CVE-2017-6773 yet. Limit exposure of the affected software until one is available.
Upgrade, and pass arguments to programs as a list instead of through a shell. More about Command injection.
Is CVE-2017-6773 being exploited?
There is no known exploitation of CVE-2017-6773 in the wild and no public exploit code.
Other vulnerabilities in Cisco Systems, Inc. StarOS for ASR 5000 Series Aggregated Services Routers
- CVE-2017-6729 Denial of service in Cisco StarOS
- CVE-2016-6455 Denial of service in Cisco StarOS 18.x through 21.x
- CVE-2016-1436 Denial of service in n/a
- CVE-2017-6775 Privilege escalation in StarOS for ASR 5000 Series Aggregated Services Routers
- CVE-2017-6774 Path traversal in StarOS for ASR 5000 Series Aggregated Services Routers
Sources
Also known as GHSA-ppp2-xhm6-jw52.