Improper Input Validation Affecting openssh-server-sysvinit package, versions <0:7.4p1-16.el7


Severity

Recommended
low

Based on CentOS security rating.

Threat Intelligence

EPSS
0.36% (73rd percentile)

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  • Snyk IDSNYK-CENTOS7-OPENSSHSERVERSYSVINIT-2101038
  • published26 Jul 2021
  • disclosed3 Oct 2017

Introduced: 3 Oct 2017

CVE-2017-15906  (opens in a new tab)
CWE-20  (opens in a new tab)

How to fix?

Upgrade Centos:7 openssh-server-sysvinit to version 0:7.4p1-16.el7 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream openssh-server-sysvinit package and not the openssh-server-sysvinit package as distributed by Centos. See How to fix? for Centos:7 relevant fixed versions and status.

The process_open function in sftp-server.c in OpenSSH before 7.6 does not properly prevent write operations in readonly mode, which allows attackers to create zero-length files.

CVSS Scores

version 3.1