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GLSA-201801-05 : OpenSSH: Permission issue

medium Nessus Plugin ID 105631

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Synopsis

The remote Gentoo host is missing one or more security-related patches.

Description

The remote host is affected by the vulnerability described in GLSA-201801-05 (OpenSSH: Permission issue)

 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.

Solution

All OpenSSH users should upgrade to the latest version:
 # emerge --sync # emerge --ask --oneshot --verbose '>=net-misc/openssh-7.5_p1-r3'

See Also

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

Plugin Details

Severity: Medium

ID: 105631

File Name: gentoo_GLSA-201801-05.nasl

Version: Revision: 3.2

Type: local

Published: 1/8/2018

Updated: 1/26/2018

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Low

Score: 1.4

CVSS v2

Risk Factor: Medium

Base Score: 5

Vector: CVSS2#AV:N/AC:L/Au:N/C:N/I:P/A:N

CVSS v3

Risk Factor: Medium

Base Score: 5.3

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

Vulnerability Information

CPE: cpe:/o:gentoo:linux, p-cpe:/a:gentoo:linux:openssh

Required KB Items: Host/local_checks_enabled, Host/Gentoo/release, Host/Gentoo/qpkg-list

Patch Publication Date: 1/7/2018

Reference Information

CVE: CVE-2017-15906

GLSA: 201801-05