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Gentoo Linux Security Advisory 202003-27

Gentoo Linux Security Advisory 202003-27
Posted Mar 16, 2020
Authored by Gentoo | Site security.gentoo.org

Gentoo Linux Security Advisory 202003-27 - A vulnerability in libssh could allow a remote attacker to execute arbitrary commands. Versions less than 0.9.3 are affected.

tags | advisory, remote, arbitrary
systems | linux, gentoo
advisories | CVE-2019-14889
SHA-256 | 323f46e016593049efe00c71c3118d89fb4887f198e9d448ef9ab908a6826521

Gentoo Linux Security Advisory 202003-27

Change Mirror Download
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Gentoo Linux Security Advisory GLSA 202003-27
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https://security.gentoo.org/
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Severity: Normal
Title: libssh: Arbitrary command execution
Date: March 15, 2020
Bugs: #701598
ID: 202003-27

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Synopsis
========

A vulnerability in libssh could allow a remote attacker to execute
arbitrary commands.

Background
==========

libssh is a multiplatform C library implementing the SSHv2 protocol on
client and server side.

Affected packages
=================

-------------------------------------------------------------------
Package / Vulnerable / Unaffected
-------------------------------------------------------------------
1 net-libs/libssh < 0.9.3 >= 0.9.3

Description
===========

It was discovered that libssh incorrectly handled certain scp commands.

Impact
======

A remote attacker could trick a victim into using a specially crafted
scp command, possibly resulting in the execution of arbitrary commands
on the server.

Workaround
==========

There is no known workaround at this time.

Resolution
==========

All libssh users should upgrade to the latest version:

# emerge --sync
# emerge --ask --oneshot --verbose ">=net-libs/libssh-0.9.3"

References
==========

[ 1 ] CVE-2019-14889
https://nvd.nist.gov/vuln/detail/CVE-2019-14889

Availability
============

This GLSA and any updates to it are available for viewing at
the Gentoo Security Website:

https://security.gentoo.org/glsa/202003-27

Concerns?
=========

Security is a primary focus of Gentoo Linux and ensuring the
confidentiality and security of our users' machines is of utmost
importance to us. Any security concerns should be addressed to
security@gentoo.org or alternatively, you may file a bug at
https://bugs.gentoo.org.

License
=======

Copyright 2020 Gentoo Foundation, Inc; referenced text
belongs to its owner(s).

The contents of this document are licensed under the
Creative Commons - Attribution / Share Alike license.

https://creativecommons.org/licenses/by-sa/2.5
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