SB2019121076 - OS Command Injection in libssh (Alpine package)

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Main Vulnerability Database SB2019121076

SB2019121076 - OS Command Injection in libssh (Alpine package)

Published: December 10, 2019

Security Bulletin ID SB2019121076
CSH Severity
Medium
Patch available
YES
Number of vulnerabilities 1
Exploitation vector Remote access
Highest impact Code execution

Breakdown by Severity

Medium 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 1 vulnerability.


1) OS Command Injection (CVE-ID: CVE-2019-14889)

CWE-ID: CWE-78 - Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Green


The vulnerability allows a remote attacker to execute arbitrary shell commands on the target system.

The vulnerability exists due to incorrect handling of the SCP command parameters when initiating the connection within the ssh_scp_new() function. A remote attacker can trick victim into using a specially crafted SCP command to connect to a remote SCP server and execute arbitrary commands on the target server with privileges of the current user.


Remediation

Install update from vendor's website.

References