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Loader.so+LibELF: Do not read environment variables if AT_SECURE is set

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AT_SECURE is set in the auxiliary vector when we execute setuid/setgid
programs.
In those cases, we do not want to read environment variables that
influence the logic of the dynamic loader, as they can be controlled
by the user.
This commit is contained in:
Itamar 2021-01-09 09:51:44 +02:00 • committed by Andreas Kling
parent 20974b0772
commit a4b74cba0b
3 changed files with 22 additions and 8 deletions
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2
Libraries/LibELF/DynamicLinker.h
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@ -35,7 +35,7 @@ namespace ELF {
class DynamicLinker {
public:
static DynamicObject::SymbolLookupResult lookup_global_symbol(const char* symbol);
[[noreturn]] static void linker_main(String&& main_program_name, int fd, int argc, char** argv, char** envp);
[[noreturn]] static void linker_main(String&& main_program_name, int fd, bool is_secure, int argc, char** argv, char** envp);
private:
DynamicLinker() = delete;