GLua Enhanced (Garry's Mod/Gmod Lua)

Problem

Software license is a legal instrument that governs the use and distribution of software source code and its binary representation. Software publishers have the freedom to choose any commonly used or purposefully written license to publish their work under. While some licenses are liberal and allow almost any kind of distribution, with or without code modification, other licenses are more restrictive and impose rules for their inclusion in other software projects. Copyleft licenses in particular impose substantial restrictions on the licensee. They typically require that any derived works, and even software code that merely interacts with copyleft code, be licensed under the same license. Since copyleft licenses are commonly applied to open source code, their inclusion requires that the entire software package becomes open sourced. For commercial applications, this is typically undesirable. Therefore, the inclusion of copyleft code is commonly avoided or even prohibited by the organization policy.

Problem

Software license is a legal instrument that governs the use and distribution of software source code and its binary representation. Software publishers have the freedom to choose any commonly used or purposefully written license to publish their work under. While some licenses are liberal and allow almost any kind of distribution, with or without code modification, other licenses are more restrictive and impose rules for their inclusion in other software projects. Some software licenses place restrictions on software distribution of the code they apply to. These restrictions may extend to the services built upon the code licensed under such restrictive licenses. Some restrictive licenses explicitly state that the licensee may not provide the software to third parties as a hosted or managed service, where the service provides users with access to any substantial set of the features or functionality of the licensed software. When building commercial applications, this is typically undesirable. Therefore, the inclusion of any code that may impose limits on software distribution is commonly avoided or even prohibited by the organization policy.

Problem

Safe Exception Handling (/SAFESEH) protects the code flow integrity by ensuring that exceptions are handled only by vetted functions. This mitigation protects dynamically constructed exception chains by checking the function targets prior to their execution. Because the code flow integrity is verified during runtime, malicious code is less likely to be able to hijack trusted execution paths. It's highly recommended to enable this option for all software components used at security boundaries, or those that process user controlled inputs. However, this option is only effective on systems that dynamically resolve exception handlers. Most notably, this option is recommended for 32-bit Windows applications that target the Intel x86 platform. Other operating system and platform combinations mitigate exception hijacking risks through the use of statically generated read-only tables.

Problem

Security Development Lifecycle (SDL) is a group of enhanced compile-time checks that report common coding mistakes as errors, preventing them from reaching production. These checks minimize the number of security issues by enforcing strict memory access checks. They also prevent the use of hard-to-secure string and memory manipulation functions. To prove the binary has been compiled with these checks enabled, the compiler emits a special debug object. Removing the debug table eliminates this proof. Therefore, this check only applies to binaries that still have their debug tables.

Problem

Presence of code relocations indicates that the code segment might temporarily, at one point, become both writable and executable. That violates security policies adopted by most modern Linux distributions. During the brief period in which the code segment is both writable and executable, the attacker may be able to overwrite the code with a malicious program.