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HistoryJul 04, 2024 - 3:15 p.m.

Cloud Software Group Security Advisory for CVE-2024-6387

2024-07-0415:15:05
support.citrix.com
40
cve-2024-6387
openssh vulnerability
regresshion
citrix
netscaler
xenserver
tibco
remote unauthenticated code execution
glibc-based linux
security advisory
cloud software group
qualys
patch mitigation
technical support
vulnerability reporting.

CVSS2

9.3

Attack Vector

NETWORK

Attack Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

COMPLETE

Integrity Impact

COMPLETE

Availability Impact

COMPLETE

AV:N/AC:M/Au:N/C:C/I:C/A:C

CVSS3

8.1

Attack Vector

NETWORK

Attack Complexity

HIGH

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

AI Score

8.4

Confidence

High

EPSS

0.929

Percentile

99.1%

Cloud Software Group is aware of the vulnerability CVE-2024-6387 impacting OpenSSH. Qualys has discovered a remote unauthenticated code execution vulnerability in OpenSSH’s server (sshd) in glibc-based Linux systems. Because this vulnerability is a regression of the previously patched vulnerability CVE-2006-5051, which was reported in 2006, it is being referred to as regreSSHion. The vulnerability has been assigned the CVE identifier CVE-2024-6387.

Please find below the impact status for the following Cloud Software Group products:

NetScaler & Citrix Products

|

Status

—|—

NetScaler ADC (formerly Citrix ADC) and NetScaler Gateway (formerly Citrix Gateway)

|

Impacted

Customers are advised to apply the latest update as soon as possible to reduce the risk of exploitation

NetScaler ADCand NetScaler Gateway 14.1-25.56 and later releases

NetScaler ADCand NetScaler Gateway 13.1-53.24 and later releases of 13.1

NetScaler ADCand NetScaler Gateway 13.0-92.31 and later releases of 13.0

NetScaler ADC 13.1-FIPS 13.1-37.190 and later releases of 13.1-FIPS

NetScaler ADC 12.1-FIPS 12.1-55.309 and later releases of 12.1-FIPS

NetScaler ADC 12.1-NDcPP 12.1-55.309 and later releases of 12.1-NDcPP

NetScaler Console (formerly Citrix ADM)

|

Impacted

Customers are advised to apply the latest update as soon as possible to reduce the risk of exploitation

NetScaler Console 14.1 Build 25.56 and later releases

NetScaler Console 13.1 Build 53.24 and later releases of 13.1

NetScaler Console 13.0 Build 92.31 and later releases of 13.0

Citrix Endpoint Management

|

Under investigation

Citrix Secure Private Access

|

Under investigation

Citrix Virtual Apps and Desktops

|

Not Impacted

Citrix Workspace

|

Not Impacted

Citrix Analytics

|

Not Impacted

XenServer Products

|

Status

Citrix Hypervisor

|

Not Impacted

XenServer 8

|

Not Impacted

****

TIBCO Products:

TIBCO Products are being evaluated for impact and we will update this advisory with more information as soon as possible.

All the services hosted on Cloud Software Group cloud, if impacted, will be patched to mitigate this risk. No action required from the customers.

What Cloud Software Group is Doing

Cloud Software Group is notifying customers and channel partners about this potential security issue through the publication of this security bulletin on the Citrix Knowledge Center at <https://support.citrix.com/securitybulletins&gt;.

Obtaining Support on This Issue

If you require technical assistance with this issue, please contact Cloud Software Group Technical Support. Contact details for Cloud Software Group Technical Support are available at <https://www.citrix.com/support/open-a-support-case&gt;.

Subscribe to Receive Alerts

Cloud Software Group strongly recommends that all customers subscribe to receive alerts when a Citrix security bulletin is created or modified at <https://support.citrix.com/user/alerts&gt;.

Reporting Security Vulnerabilities to Cloud Software Group

Cloud Software Group welcomes input regarding the security of its products and considers any and all potential vulnerabilities seriously. For details on our vulnerability response process and guidance on how to report security-related issues to Cloud Software Group, please see the following webpage: <https://www.citrix.com/about/trust-center/vulnerability-process.html&gt;.

Disclaimer

The information on this page is being provided to you on an “AS IS” and “AS-AVAILABLE” basis. The issues described on this page may or may not impact your system(s). Cloud Software Group, Inc. and its subsidiaries (collectively, “Cloud SG”) make no representations, warranties, or guarantees as to the information contained herein. ANY AND ALL WARRANTIES, EXPRESS OR IMPLIED, INCLUDING, WITHOUT LIMITATION, INCLUDING, BUT NOT LIMITED TO, IMPLIED WARRANTIES OF MERCHANTABILITY, NON-INFRINGEMENT AND FITNESS FOR A PARTICULAR PURPOSE ARE HEREBY DISCLAIMED. BY ACCESSING THIS PAGE, YOU ACKNOWLEDGE THAT CLOUD SG SHALL IN NO EVENT BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, PUNITIVE, OR CONSEQUENTIAL DAMAGES THAT ARISE OUT OF YOUR USE OR FAILURE TO USE THE INFORMATION CONTAINED HEREIN. Cloud SG reserves the right to change or update the information on this page at any time. We accordingly recommend that you always view the latest version of this page. The information contained herein is being provided to you under the terms of your applicable customer agreement with Cloud SG, and may be used only for the purposes contemplated by such agreement. If you do not have such an agreement with Cloud SG, this information is provided under the cloud.com Terms of Use, and may be used only for the purposes contemplated by such Terms of Use.

Changelog

2024-07-04 Initial Publication
2024-07-09 Updates to NetScaler ADC and NetScaler Gateway
2024-07-10 Updates to NetScaler Console

CVSS2

9.3

Attack Vector

NETWORK

Attack Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

COMPLETE

Integrity Impact

COMPLETE

Availability Impact

COMPLETE

AV:N/AC:M/Au:N/C:C/I:C/A:C

CVSS3

8.1

Attack Vector

NETWORK

Attack Complexity

HIGH

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

AI Score

8.4

Confidence

High

EPSS

0.929

Percentile

99.1%