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[R4] SecurityCenter 5.0.0.1 Affected by Third-party Library

Critical
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Synopsis

SecurityCenter is potentially impacted by several vulnerabilities in PHP that were recently disclosed and fixed. Note that due to the time involved in doing a full analysis of each issue, Tenable has opted to patch the included version of PHP as a precaution, and to save time.

  • CVE-2015-4025: PHP Multiple NULL Byte Injection Filter Bypass Weaknesses
  • CVE-2015-4024: PHP main/rfc1867.c multipart_buffer_headers() Function HTTP Request Multipart/form-data Handling CPU Exhaustion Remote DoS
  • CVE-2015-2326: Perl-Compatible Regular Expression (PCRE) pcre_compile2() Function Regex Handling Heap Buffer Overflow
  • CVE-2015-2325: Perl-Compatible Regular Expression (PCRE) compile_branch() Function Regex Handling Heap Buffer Overflow
  • CVE-2006-7243: PHP Pathname \0 Character file_exists Function Access Restriction Bypass

Additionally. the latest version of PHP fix the following issues, but Tenable SecurityCenter is not affected:

  • CVE-2015-3307: PHP ext/phar/phar.c phar_parse_metadata() Function TAR File Parsing Memory Corruption
  • CVE-2015-4022: PHP ext/ftp/ftp.c ftp_genlist() Function Integer Overflow Heap Buffer Overflow
  • CVE-2015-4021: PHP ext/phar/tar.c phar_parse_tarfile() Zero-length Entry Filename Handling Memory Corruption
  • CVE-2015-4026: PHP pcntl_exec() Function NULL Byte Injection Filter Bypass Weakness

Please note that Tenable strongly recommends that SecurityCenter be installed on a subnet that is not Internet addressable.

Solution

Tenable has released a patch for SecurityCenter 4.8.1 and 4.8.2 that addresses this vulnerability. This patch applies PHP 5.4.41, which is not affected. 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-201506.1-rh5-32.tgz  fe3ff5507b968082826ccca4ffa38106  
SC-201506.1-rh5-64.tgz  bf669e4badbbc51fb70c90980ccb69c1  
SC-201506.1-rh6-32.tgz  e07b983d6aa6e2a771e4afc66a4d4a35  
SC-201506.1-rh6-64.tgz  1c1444d85eaab33f81b167175cb04c75

Version 5.0.1 will be released as a fix for the current 5.0.0.1 release, which is currently scheduled for a July, 2015 release. Users of 4.6.x, 4.7.x, and 4.8.0 must upgrade to 4.8.1 or later to resolve this issue.

Additional References

http://php.net/ChangeLog-5.php#5.4.41

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-2015-06
Risk Factor: Critical
CVSSv2 Base / Temporal Score
10.0 / 7.4
CVSSv2 Vector:
(AV:N/AC:L/Au:N/C:C/I:C/A:C/E:U/RL:OF/RC:C)
Additional Keywords:
IAVM 2015-B-0064

Affected Products

Security Center: 4.6.2.2, 4.7.0, 4.7.1, 4.8.0, 4.8.1, 4.8.2, 5.0.0.1

Disclosure Timeline

2015-05-14 - PHP 5.4.41 Released
2015-06-16 - Tenable SecurityCenter Patch Available

Advisory Timeline

2015-06-16 - [R1] Initial release
2015-06-17 - [R2] Fix solution to qualify 4.x vs 5.x information, and 4.6 / 4.7 upgrade
2016-11-16 - [R3] Adjusted CVSSv2 scoring
2017-02-28 - [R4] Adjust CVSS for worst-case scenario (AV:A -> AV:N)
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