CVE-2020-15778 is a high-severity vulnerability affecting OpenSSH versions up to 8.3. It allows command injection in the scp.c toremote function, potentially impacting a variety of systems that use OpenSSH for secure file transfers. While the vulnerability has been addressed in newer versions of OpenSSH, it's essential for users to update their systems to protect against potential security risks.

How do I know if I'm affected?

If you're wondering whether you're affected by the vulnerability, it's important to know that it impacts OpenSSH versions up to (excluding) 8.3. This vulnerability is related to the "scp" command and allows command injection in the "scp.c toremote" function. To determine if you're affected, you'll need to check your OpenSSH version and the context in which you use the "scp" command.

What should I do if I'm affected?

If you're affected by the vulnerability, it's crucial to update your OpenSSH to a version that's not impacted (8.3 or newer). To do this, follow these simple steps. First, check your current OpenSSH version. Then, if it's older than 8.3, update to the latest version. Lastly, verify the update was successful. Reach out to your software vendor or technical support for assistance if needed.

Is this in CISA’s Known Exploited Vulnerabilities Catalog?

The CVE-2020-15778 vulnerability is not listed in CISA's Known Exploited Vulnerabilities Catalog. This vulnerability, discovered in 2020, affects OpenSSH versions up to 8.3 and allows command injection in the scp.c toremote function. To mitigate the risk, users should update their OpenSSH to version 8.3 or newer. No specific due date or required action is mentioned.

Weakness enumeration

The weakness enumeration for this vulnerability is categorized as CWE-78, which involves improper neutralization of special elements in OS commands, leading to command injection. This issue arises from the outdated "rcp" protocol and insecure argument handling in the "scp" command.

For more details

CVE-2020-15778 is a significant vulnerability affecting OpenSSH versions up to 8.3, with potential consequences such as command injection and arbitrary code execution. Users are advised to update their systems to mitigate the risk. For a comprehensive understanding of the vulnerability, including its description, severity, technical details, and known affected software configurations, visit the NVD page or the links below.

• Deprecating scp

• CVE-2020-15778 OpenSSH Vulnerability in NetApp Products | NetApp Product Security

• OpenSSH: Security

• OpenSSH: Multiple Vulnerabilities (GLSA 202212-06) — Gentoo security (1)