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[R7] OpenSSL '20141015' Advisory Affects Tenable Products

High
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Synopsis

SecurityCenter is impacted by two vulnerabilities in OpenSSL that were recently disclosed and fixed.

CVE-2014-3513 - OpenSSL contains a flaw in the DTLS SRTP extension parsing code that is triggered when handling a specially crafted handshake message, which can cause a memory leak. This may allow a remote attacker to cause a denial of service.

CVE-2014-3567 - OpenSSL contains a flaw in the SSL, TLS, and DTLS servers that is triggered when handling a session ticket that has failed to have its integrity properly verified, which can result in a memory leak. With a large number of invalid session tickets, a remote attacker can cause a denial of service.

Notes and caveats:

  • SecurityCenter is not affected by CVE-2014-3568 as it does not get compiled with the no-ssl3 option.
  • Note that Nessus, LCE, and PVS are not affected by these issues.
  • Please note that Tenable strongly recommends that SecurityCenter and the Tenable Appliance be installed on a subnet that is not Internet addressable.

Solution

Tenable has released a patch for all supported versions of SecurityCenter that addresses this vulnerability. This patch applies OpenSSL 1.0.1j, which is not affected. This patch has been tested on SecurityCenter versions 4.6.2.2, 4.7.1, and 4.8.1. Upgrade information can be obtained from:

http://static.tenable.com/prod_docs/upgrade_security_center.html

The patch can be obtained from:

https://support.tenable.com/support-center/index.php?x=&mod_id=160

File                                   md5sum                             
SC-201411.1-rh5-32.tgz        14b0fcfe090fc33d5dd6eba8170ccb1e
SC-201411.1-rh5-64.tgz        f0cf7cad17aa318da80f0307f1102ba5
SC-201411.1-rh6-32.tgz        7f3e64f1ff11daef718b2ce2f40c9520
SC-201411.1-rh6-64.tgz        bd04d683d1fa1a7c24edee71eb1c62f5

Tenable Appliance users can upgrade to version 3.1.0, or users with SecurityCenter enabled on 2.8.1 or 3.0.0 can apply the following patch that applies OpenSSL 1.0.1j, which is not affected. They can be obtained from:

https://support.tenable.com/support-center/index.php?x=&mod_id=230 

File                                   md5sum                       
SC-TNS-2014-11_2.8.1.tar.gz       13f7de283b937ff1867c25f47d20c76d
SC-TNS-2014-11_3.0.0.tar.gz       3c9aeb4a002494bf705986bc563eedc2

Additional References

http://www.openssl.org/news/secadv_20141015.txt

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 [email protected]

Risk Information

Tenable Advisory ID: TNS-2014-11
Risk Factor: High
Credit:
(Unknown)
CVSSv2 Base / Temporal Score
7.8 / 5.8
CVSSv2 Vector:
(AV:N/AC:L/Au:N/C:N/I:N/A:C/E:U/RL:OF/RC:C)

Affected Products

SecurityCenter: 4.6.2.2, 4.7.0, 4.7.1, 4.8.0, 4.8.1
Tenable Appliance: 2.4.1, 2.6.1, 2.6.2, 2.8.0, 2.8.1, 3.0.0

Disclosure Timeline

2014-10-15 - Issue Disclosed
2014-11-07 - SecurityCenter Patch Published

Advisory Timeline

2014-11-07 - [R1] Initial release
2014-11-07 - [R2] Typo on date, touch up solution
2014-11-13 - [R3] Add Appliance 3.0.0 to affected
2014-11-24 - [R4] Add Appliance 3.1.0 as additional solution
2016-03-03 - [R5] Title standardization
2016-11-17 - [R6] Adjusted CVSSv2 score
2017-02-28 - [R7] Adjust CVSS for worst-case scenario (AV:A -> AV:N)
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