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CVE-2017-15906

Published: 25 October 2017

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.

Notes

AuthorNote
leosilva
file structure and patch mismatch, some ajustments required
Priority

Low

CVSS 3 base score: 5.3

Status

Package Release Status
openssh
Launchpad, Ubuntu, Debian
artful
Released (1:7.5p1-10ubuntu0.1)
bionic
Released (1:7.6p1-4)
cosmic
Released (1:7.6p1-4)
disco
Released (1:7.6p1-4)
eoan
Released (1:7.6p1-4)
focal
Released (1:7.6p1-4)
groovy
Released (1:7.6p1-4)
hirsute
Released (1:7.6p1-4)
precise Ignored
(end of ESM support, was needed)
trusty
Released (1:6.6p1-2ubuntu2.10)
upstream
Released (1:7.6p1-1)
xenial
Released (1:7.2p2-4ubuntu2.4)
zesty Ignored
(reached end-of-life)
Patches:
upstream: https://github.com/openbsd/src/commit/a6981567e8e215acc1ef690c8dbb30f2d9b00a19