Dropbear · Dropbear Ssh Server · CVE-2012-0920
**Name of the Vulnerable Software and Affected Versions**
Dropbear SSH Server versions 0.52 through 2012.54
**Description**
The issue allows remote authenticated users to execute arbitrary code and bypass command restrictions via multiple crafted command requests, related to channels concurrency. This can lead to a violation of confidentiality, integrity, and availability of protected information. The exploitation of this issue can be carried out remotely by an attacker who has passed the authentication procedure.
**Recommendations**
For Dropbear SSH Server versions 0.52 through 2012.54, update to version 2012.55 or later to resolve the issue.
As a temporary workaround, consider disabling public key authentication and command restriction until a patch is available.
Restrict access to the SSH server to minimize the risk of exploitation.