CVE-2016-0777 Information disclosure in n/a

Medium 6.5 Published 14 Jan 2016 Updated 29 May 2026

A malicious remote server can exploit the OpenSSH client to read sensitive process memory, potentially exposing private keys.

Exploited in the wild: Not known
Login needed: Any signed-in user
Attackable: Over the internet
Victim action needed: Not needed
Fix: Available

What is CVE-2016-0777?

CVE-2016-0777 is a medium-severity vulnerability in Apple Mac Os X, published on 14 Jan 2016. Any signed-in user can exploit it over the network, with no action from the victim.

Official description

The resend_bytes function in roaming_common.c in the client in OpenSSH 5.x, 6.x, and 7.x before 7.1p2 allows remote servers to obtain sensitive information from process memory by requesting transmission of an entire buffer, as demonstrated by reading a private key.

Weakness: CWE-200

Which versions are affected by CVE-2016-0777?

It affects 6 products.

Products include Apple Mac Os X, Hp Remote Device Access Virtual Customer Access System, OpenSSH, Oracle Linux, Oracle Solaris, Sophos Unified Threat Management Software.

How do I fix CVE-2016-0777?

Upgrade to a fixed version.

Is CVE-2016-0777 being exploited?

There is no known exploitation of CVE-2016-0777 in the wild and no public exploit code.

Public exploit code: 1 proofs of concept on GitHub.

All Apple Mac Os X vulnerabilities

Sources

Also known as DEBIAN-CVE-2016-0777, GHSA-9h73-2pqx-3jh8, UBUNTU-CVE-2016-0777.