[ GLSA 202105-35 ] OpenSSH

[GLSA]

Gentoo Linux Security Advisory

Title: OpenSSH: Multiple vulnerabilities (GLSA 202105-35)
Severity: normal
Exploitable: local, remote
Date: 2021-05-26
Bug(s): #763048, #774090
ID: 202105-35

Synopsis

Multiple vulnerabilities have been found in OpenSSH, the worst of
which could allow a remote attacker to execute arbitrary code.


Background

OpenSSH is a complete SSH protocol implementation that includes SFTP
client and server support.


Affected Packages

Package: net-misc/openssh
Vulnerable: < 8.5_p1
Unaffected: >= 8.5_p1
Architectures: All supported architectures


Description

Multiple vulnerabilities have been discovered in OpenSSH. Please review
the CVE identifiers referenced below for details.


Impact

A remote attacker, able to access the socket of the forwarding agent,
might be able to execute arbitrary code with the privileges of the
process or cause a Denial of Service condition.
Furthermore, a remote attacker might conduct a man-in-the-middle attack
targeting initial connection attempts where no host key for the server
has been cached by client yet.


Workaround

There is no known workaround at this time.

Resolution

All OpenSSH users should upgrade to the latest version: