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Software Audit - ISIT Expertises

Software Audit

Source code/binary audit: detecting software bugs or flaws

A software audit can be used for a variety of purposes: improving code quality, preparing software for certification, checking compliance with coding rules, detecting bugs or vulnerabilities, etc.

The source code file audit, as its name suggests, uses the software application's source files to analyze either the program's syntax (e.g. coding rules) or semantics (bugs).

Audit of source files

Audit of code allows you to scan your software and detect bugs that could affect its operation throughout its lifetime. The aim is to identify errors or coding methods that could lead to system breakdowns, unexpected behavior or cybersecurity flaws.

Based on Advanced Static Analysis, this code audit is an analysis method that has proven its effectiveness in detecting common programming faults. It makes it possible to analyze an application in its entirety, and to eliminate the most costly flaws, which are generally very difficult to detect by manual analysis. As the code is never executed in a static analysis, it can be used at any point in the development cycle, and ideally complements other testing methodologies, such as conventional dynamic testing.

For example, here is a non-exhaustive list of the types of detections enabled by advanced static analysis:
  • Command injection / SQL
  • Tainted values (analysis of data flow, in particular external data, and its propagation, to judge its potential danger - cybersecurity)
  • Buffer overrun (buffer overrun / underrun)
  • Division by zero
  • Null pointer dereference
  • Memory leaks
  • Stack overflow
  • Casts problems
  • Uninitialized variables / pointers
  • Double release / file closure / socket / mutex ...
  • Thread competition: Data Race, Dead locks, famine ...
  • ...

Audit binary or executable files

In a digital world where software is ubiquitous and increasingly complex, cybersecurity has become essential. Binary Composition Analysis (BCA), which provides an exhaustive inventory of the software components (SBOMs) that make up an application, is a crucial element of this security.

What are the benefits of this analysis?

This analysis provides :
  • An exhaustive inventory (SBOM) of software components, both open source and third-party, used in an application.
  • Rapid identification of N-day and zero-day vulnerabilities
  • Visibility into dependencies
  • A response to the regulatory requirements of the CRA, NIS2 and DORA
  • Easy-to-integrate reports in CycloneDX, SPDX or CSV format


Fort de sa longue expertise dans les outils et le développement d’applications temps réel critiques, ISIT a mis en place un service d’audit de code à la demande pour les clients qui ne disposent pas des outils dans leur bureau d’études ou des ressources pour les réaliser, mais qui souhaitent néanmoins s’assurer du niveau de qualité de leurs logiciels. Ceci est particulièrement vrai avec le développement des systèmes connectés, pour lesquels les failles dans le code résultent souvent en dangereuses vulnérabilités.

Audit de codes : Moyens & Procédures
Nos audits logiciels portent aussi bien sur l’analyse de code source (C, C++, Java et C#) que sur celle de code binaire (même en l'absence des fichiers sources). Ils s’appuient sur des outils ad hoc, qualifiés et reconnus pour leur efficacité dans ce domaine.

Ces audits sont réalisés dans le strict respect des règles de confidentialité et s’inscrivent dans un cadre sécurisé, conforme aux meilleures pratiques en matière de protection des données.

Audit de logiciel : Résultats 
A l’issue de cette analyse, un rapport détaillé est généré indiquant l’ensemble des détections (Safety, Security).

Nos experts AQL peuvent en complément effectuer une revue détaillée de ces détections afin de vous donner des préconisations concrètes pour leur correction.

Au-delà de cette analyse, nos consultants sont à même de vous accompagner et de vous assister tout au long de votre développement afin de vous assurer de la qualité et la fiabilité de votre logiciel.
 

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