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CVE-2017-15906

Publication date 25 October 2017

Last updated 24 July 2024

Ubuntu priority

Low

Why this priority?

Cvss 3 Severity Score

5.3 · Medium

Score breakdown

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.

Read the notes from the security team

Status

Package Ubuntu Release Status
openssh 21.04 hirsute
Fixed 1:7.6p1-4
20.10 groovy
Fixed 1:7.6p1-4
20.04 LTS focal
Fixed 1:7.6p1-4
19.10 eoan
Fixed 1:7.6p1-4
19.04 disco
Fixed 1:7.6p1-4
18.10 cosmic
Fixed 1:7.6p1-4
18.04 LTS bionic
Fixed 1:7.6p1-4
17.10 artful
Fixed 1:7.5p1-10ubuntu0.1
17.04 zesty Ignored end of life
16.04 LTS xenial
Fixed 1:7.2p2-4ubuntu2.4
14.04 LTS trusty
Fixed 1:6.6p1-2ubuntu2.10

Notes

leosilva

file structure and patch mismatch, some ajustments required

Patch details

For informational purposes only. We recommend not to cherry-pick updates. How can I get the fixes?

Package Patch details
openssh

Severity score breakdown

Parameter Value
Base score 5.3 · Medium
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Scope Unchanged
Confidentiality None
Integrity impact Low
Availability impact None
Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N