Sigurnosni nedostatak programskog paketa OpenSSH

Detalji os-a: WN7
Važnost: IMP
Operativni sustavi: L
Kategorije: LGE

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Gentoo Linux Security Advisory GLSA 201801-05
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https://security.gentoo.org/
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Severity: Normal
Title: OpenSSH: Permission issue
Date: January 07, 2018
Bugs: #633428
ID: 201801-05

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Synopsis
========

A flaw has been discovered in OpenSSH which could allow a remote
attacker to create zero-length files.

Background
==========

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

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

——————————————————————-
Package / Vulnerable / Unaffected
——————————————————————-
1 net-misc/openssh < 7.5_p1-r3 >= 7.5_p1-r3

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

The process_open function in sftp-server.c in OpenSSH did not properly
prevent write operations in readonly mode.

Impact
======

A remote attacker could cause the creation of zero-length files.

Workaround
==========

There is no known workaround at this time.

Resolution
==========

All OpenSSH users should upgrade to the latest version:

# emerge –sync
# emerge –ask –oneshot –verbose “>=net-misc/openssh-7.5_p1-r3”

References
==========

[ 1 ] CVE-2017-15906
https://nvd.nist.gov/nvd.cfm?cvename=CVE-2017-15906

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

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

https://security.gentoo.org/glsa/201801-05

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
=======
<!DOCTYPE HTML PUBLIC “-//W3C//DTD HTML 4.0//EN” “http://www.w3.org/TR/REC-html40/strict.dtd”>
<html><head><meta name=”qrichtext” content=”1″ /><style type=”text/css”>
p, li { white-space: pre-wrap; }
</style></head><body style=” font-family:’Noto Sans’; font-size:10pt; font-weight:400; font-style:normal;”>
- – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – -
Gentoo Linux Security Advisory GLSA 201801-05
- – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – -
 https://security.gentoo.org/
- – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – -
 
 Severity: Normal
 Title: OpenSSH: Permission issue
 Date: January 07, 2018
 Bugs: #633428
 ID: 201801-05
 
- – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – -
 
Synopsis
========
 
A flaw has been discovered in OpenSSH which could allow a remote
attacker to create zero-length files.
 
Background
==========
 
OpenSSH is a complete SSH protocol implementation that includes SFTP
client and server support.
 
Affected packages
=================
 
 ——————————————————————-
 Package / Vulnerable / Unaffected
 ——————————————————————-
 1 net-misc/openssh < 7.5_p1-r3 >= 7.5_p1-r3 
 
Description
===========
 
The process_open function in sftp-server.c in OpenSSH did not properly
prevent write operations in readonly mode.
 
Impact
======
 
A remote attacker could cause the creation of zero-length files.
 
Workaround
==========
 
There is no known workaround at this time.
 
Resolution
==========
 
All OpenSSH users should upgrade to the latest version:
 
 # emerge –sync
 # emerge –ask –oneshot –verbose ">=net-misc/openssh-7.5_p1-r3"
 
References
==========
 
[ 1 ] CVE-2017-15906
 https://nvd.nist.gov/nvd.cfm?cvename=CVE-2017-15906
 
Availability
============
 
This GLSA and any updates to it are available for viewing at
the Gentoo Security Website:
 
 https://security.gentoo.org/glsa/201801-05
 
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 2018 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.
 
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Autor	Vlatka Misic
Cert id	NCERT-REF-2018-01-0010-ADV
Cve	CERT-CVE-DUMMY
ID izvornika	CERT-ORIGID-DUMMY
Proizvod	CERT-DUMMY-PRODUCT
Izvor	http://www.adobe.com/

Sigurnosni nedostatak programskog paketa OpenSSH

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