Alpine: openssh: security update to 7.5_p1-r10

medium Tenable Self-Hosted Container Security Plugin ID 406051

Description

There are packages installed that are affected by multiple vulnerabilities referenced in the following CVEs:

- In OpenSSH 7.9, scp.c in the scp client allows remote SSH servers to bypass intended access restrictions
via the filename of . or an empty filename. The impact is modifying the permissions of the target
directory on the client side. (CVE-2018-20685)

- An issue was discovered in OpenSSH 7.9. Due to missing character encoding in the progress display, a
malicious server (or Man-in-The-Middle attacker) can employ crafted object names to manipulate the client
output, e.g., by using ANSI control codes to hide additional files being transferred. This affects
refresh_progress_meter() in progressmeter.c. (CVE-2019-6109)

- An issue was discovered in OpenSSH 7.9. Due to the scp implementation being derived from 1983 rcp, the
server chooses which files/directories are sent to the client. However, the scp client only performs
cursory validation of the object name returned (only directory traversal attacks are prevented). A
malicious scp server (or Man-in-The-Middle attacker) can overwrite arbitrary files in the scp client
target directory. If recursive operation (-r) is performed, the server can manipulate subdirectories as
well (for example, to overwrite the .ssh/authorized_keys file). (CVE-2019-6111)

See Also

https://security.alpinelinux.org/vuln/CVE-2018-20685

https://security.alpinelinux.org/vuln/CVE-2019-6109

https://security.alpinelinux.org/vuln/CVE-2019-6111

Plugin Details

Severity: Medium

ID: 406051

Version: Revision 1.28

Type: Local

Published: 10/31/2023

Updated: 7/2/2026

Supported Sensors: Agentless Assessment, Tenable Cloud Security, Tenable Self-Hosted Container Security

Risk Information

VPR

Risk Factor: Medium

Score: 5.7

Percentile: 96.49

CVSS v2

Risk Factor: Medium

Base Score: 5.8

Temporal Score: 4.5

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

CVSS Score Source: CVE-2019-6111

CVSS v3

Risk Factor: Medium

Base Score: 6.8

Temporal Score: 6.1

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

Temporal Vector: CVSS:3.0/E:P/RL:O/RC:C

CVSS Score Source: CVE-2019-6109

Vulnerability Information

Exploit Available: true

Exploit Ease: Exploits are available

Vulnerability Publication Date: 1/10/2019

Reference Information

CVE: CVE-2018-20685, CVE-2019-6109, CVE-2019-6111

BID: 106531, 106741, 106843