SB2020052708 - Security restrictions bypass in OpenSSH

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Main Vulnerability Database SB2020052708

SB2020052708 - Security restrictions bypass in OpenSSH

Published: May 27, 2020

Security Bulletin ID SB2020052708
CSH Severity
Low
Patch available
YES
Number of vulnerabilities 1
Exploitation vector Remote access
Highest impact Data manipulation

Breakdown by Severity

Low 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 1 vulnerability.


1) Resource management error (CVE-ID: N/A)

CWE-ID: CWE-399 - Resource Management Errors

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


The vulnerability allows a remote attacker to write arbitrary files to the victim's system.

The vulnerability exists due to improper management of scp(1) when receiving files. A remote attacker who controls the filesystem, can craft a file system that will transfer different file names and contents to the actual user;s filesystem layout, when copied with scp(1) in a configuration that caused utimes(2) to fail (e.g. under a SELinux policy or syscall sandbox).

Exploitation of this vulnerability may allow a malicious attacker to overwrite files on the client's system, however requires additional conditions to be met, such as utimes(2) failure.


Remediation

Install update from vendor's website.

References