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[R4] Nessus 5.2.11 / 6.3.7 Fixes Third-party Library

High

Synopsis

Tenable Nessus and Nessus Enterprise are affected by two recently patched vulnerabilities in SQLite:

SQLite resolve_backslashes() Function .\ Command Handling Off-by-one Remote Heap Buffer Overflow:

SQLite contains an off-by-one overflow condition in the resolve_backslashes() function. The issue is triggered as user-supplied input is not properly validated when handling .\ commands. This may allow a remote attacker to cause a limited heap-based buffer overflow, resulting in a denial of service or potentially execution of arbitrary code.

SQLite sqlite3VdbeExec() Function Database File Handling Heap Buffer Overflow:

SQLite contains an overflow condition in the sqlite3VdbeExec() function. The issue is triggered as user-supplied input is not properly validated when handling database files. This may allow a context-dependent attacker to cause a heap-based buffer overflow, resulting in a denial of service or potentially allowing the execution of arbitrary code.

While Tenable has not confirmed this is exploitable, we have upgraded the software to use the latest version of SQLite as a precaution.

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

Solution

Tenable has released versions 5.2.11 and 6.3.7 that correspond to the supported operating systems and architectures. This version bundles the updated SQLite library (3.8.10.1), which is not affected.

To update your Nessus installation, follow these steps:

  1. Download the appropriate installation file to the system hosting Nessus or Nessus Enterprise, available at the Tenable Support Portal.
  2. Stop the Nessus service.
  3. Install according to your operating system procedures.
  4. Restart the Nessus service.

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]