Security Bulletin
Summary
Redhat provided OpenSSH is used by IBM Integrated Analytics System. This bulletin provides mitigation for the reported CVE.
Vulnerability Details
CVEID: CVE-2019-6109
DESCRIPTION: OpenSSH could allow a remote attacker to conduct spoofing attacks, caused by missing character encoding in the progress display. A man-in-the-middle attacker could exploit this vulnerability to spoof scp client output.
CVSS Base score: 4.2
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/155488 for the current score.
CVSS Vector: (CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:N)
CVEID: CVE-2019-6111
DESCRIPTION: OpenSSH could allow a remote attacker to overwrite arbitrary files on the system, caused by missing received object name validation by the scp client. The scp implementation accepts arbitrary files sent by the server and a man-in-the-middle attacker could exploit this vulnerability to overwrite unrelated files.
CVSS Base score: 5.3
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/155486 for the current score.
CVSS Vector: (CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:H/A:N)
CVEID: CVE-2019-6110
DESCRIPTION: OpenSSH could allow a remote attacker to conduct spoofing attacks, caused by accepting and displaying arbitrary stderr output from the scp server. A man-in-the-middle attacker could exploit this vulnerability to spoof scp client output.
CVSS Base score: 3.1
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/155487 for the current score.
CVSS Vector: (CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:L/A:N)
Affected Products and Versions
Affected Product(s) | Version(s) |
IBM Integrated Analytics System | 1.0.0-1.0.24.0 |
Remediation/Fixes
None
Workarounds and Mitigations
Mitigation for reported CVE CVE-2019-6109, CVE-2019-6111 and CVE-2019-6110 is as follows:
This security flaw only affects the users of scp binary which is a part of openssh-clients package. The SSH protocol or any other applications shipped as a part of openssh-clients packages are not vulnerable.
We therefore recommends the use of rsync in the place of scp for better security. More details about supported alternatives available at: https://access.redhat.com/articles/5284081
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References
Acknowledgement
Change History
18 Nov 2020: Initial Publication
*The CVSS Environment Score is customer environment specific and will ultimately impact the Overall CVSS Score. Customers can evaluate the impact of this vulnerability in their environments by accessing the links in the Reference section of this Security Bulletin.
Disclaimer
Review the IBM security bulletin disclaimer and definitions regarding your responsibilities for assessing potential impact of security vulnerabilities to your environment.
Document Location
Worldwide
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Document Information
Modified date:
18 November 2020
UID
ibm16369923