CVE-2017-15906 Information

Description

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 Vector

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

Reference

http://www.securityfocus.com/bid/101552 https://access.redhat.com/errata/RHSA-2018:0980 https://github.com/openbsd/src/commit/a6981567e8e215acc1ef690c8dbb30f2d9b00a19 https://lists.debian.org/debian-lts-announce/2018/09/msg00010.html https://security.gentoo.org/glsa/201801-05 https://security.netapp.com/advisory/ntap-20180423-0004/ https://www.openssh.com/txt/release-7.6 https://www.oracle.com/security-alerts/cpujan2020.html

Attack Complexity

LOW

Privileges Required

NONE

User Interaction Required

NONE

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

NONE

Availability Impact

LOW

Base Score

NONE

Base Severity

5.3