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AUSCERT External Security Bulletin Redistribution
ESB-2021.3482
Security Patch for Tenable.sc
20 October 2021
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AusCERT Security Bulletin Summary
---------------------------------
Product: tenable.sc
Publisher: Tenable
Operating System: Linux variants
Impact/Access: Denial of Service -- Remote/Unauthenticated
Provide Misleading Information -- Remote/Unauthenticated
Access Confidential Data -- Remote/Unauthenticated
Reduced Security -- Remote/Unauthenticated
Resolution: Patch/Upgrade
CVE Names: CVE-2021-40438 CVE-2021-34798 CVE-2021-33193
Reference: ESB-2021.3429
ESB-2021.3405
ESB-2021.3394
ESB-2021.3387
ESB-2021.3373
Original Bulletin:
https://www.tenable.com/security/tns-2021-17
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[R1] Stand-alone Security Patch Available for Tenable.sc versions 5.16.0 to
5.19.1: Patch 202110.1
Critical
Synopsis
Tenable.sc leverages third-party software to help provide underlying
functionality. One of the third-party components (Apache) was found to contain
vulnerabilities, and updated versions have been made available by the
providers.
Out of caution, and in line with best practice, Tenable opted to upgrade the
bundled Apache components to address the potential impact of these issues.
Tenable.sc Patch 202110.1 updates Apache to version 2.4.51 to address the
identified vulnerabilities.
Solution
Tenable has released Tenable.sc Patch 202110.1 to address these issues. The
installation files can be obtained from the Tenable Downloads Portal ( https://
www.tenable.com/downloads/tenable-sc ).
Additional References
https://docs.tenable.com/releasenotes/Content/tenablesc/tenablesc2021101.htm
This page contains information regarding security vulnerabilities that may
impact Tenable's products. This may include issues specific to our software, or
due to the use of third-party libraries within our software. Tenable strongly
encourages users to ensure that they upgrade or apply relevant patches in a
timely manner.
Tenable takes product security very seriously. If you believe you have found a
vulnerability in one of our products, we ask that you please work with us to
quickly resolve it in order to protect customers. Tenable believes in
responding quickly to such reports, maintaining communication with researchers,
and providing a solution in short order.
For more details on submitting vulnerability information, please see our
Vulnerability Reporting Guidelines page.
If you have questions or corrections about this advisory, please email
Risk Information
CVE ID: CVE-2021-33193
CVE-2021-34798
CVE-2021-40438
Tenable Advisory ID:
TNS-2021-17
Risk Factor:
Critical
CVSSv3 Base / Temporal Score:
7.5 / 6.7 (CVE-2021-33193)
7.5 / 6.7 (CVE-2021-34798)
9.0 / 7.8 (CVE-2021-40438)
CVSSv3 Vector:
AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N/E:P/RL:O/RC:C
AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:P/RL:O/RC:C
AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H/E:U/RL:O/RC:C
Affected Products
Tenable.sc versions 5.19.1 and earlier
Advisory Timeline
2021-10-19 - [R1] Initial Release
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