CVE-2019-6110

Impact:
Low
Public Date:
2018-11-16
CWE:
CWE-451
Bugzilla:
1666124: CVE-2019-6110 openssh: Acceptance and display of arbitrary stderr allows for spoofing of scp client output

The MITRE CVE dictionary describes this issue as:

In OpenSSH 7.9, due to accepting and displaying arbitrary stderr output from the server, a malicious server (or Man-in-The-Middle attacker) can manipulate the client output, for example to use ANSI control codes to hide additional files being transferred.

Find out more about CVE-2019-6110 from the MITRE CVE dictionary dictionary and NIST NVD.

Statement

This issue affects the scp client shipped with openssh. The SSH protocol or the SSH client is not affected. For more detailed analysis please refer to: https://bugzilla.redhat.com/show_bug.cgi?id=1666124#c2

CVSS v3 metrics

NOTE: The following CVSS v3 metrics and score provided are preliminary and subject to review.

CVSS3 Base Score 3.1
CVSS3 Base Metrics CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:L/A:N
Attack Vector Network
Attack Complexity High
Privileges Required None
User Interaction Required
Scope Unchanged
Confidentiality None
Integrity Impact Low
Availability Impact None
Unless explicitly stated as not affected, all previous versions of packages in any minor update stream of a product listed here should be assumed vulnerable, although may not have been subject to full analysis.

Mitigation

This issue only affects the users of scp binary which is a part of openssh-clients package. Other usage of SSH protocol or other ssh clients is not affected. Administrators can uninstall openssh-clients for additional protection against accidental usage of this binary.

External References

Last Modified

CVE description copyright © 2017, The MITRE Corporation