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Insecure Binary compilation

Description​

The binary for the IOS platform has been compiled without the Stack Smashing Protector (SSP) and Automatic Reference Counting (ARC) flags which provide protection against Stack Overflow attacks and memory corruption.

Impact​

Overwrite registers in memory or cause a denial of service through buffer overflow attacks.

Recommendation​

Compile binaries with ARC and fstack-protector-all flags.

Threat​

Internal attacker with access to the IPA.

Expected Remediation Time​

⌚ 450 minutes.

Score​

Default score using CVSS 3.1. It may change depending on the context of the vulnerability.

Base​

  • Attack vector: A
  • Attack complexity: H
  • Privileges required: L
  • User interaction: N
  • Scope: U
  • Confidentiality: N
  • Integrity: L
  • Availability: L

Temporal​

  • Exploit code madurity: P
  • Remediation level: O
  • Report confidence: X

Result​

  • Vector string: CVSS:3.1/AV:A/AC:H/PR:L/UI:N/S:U/C:N/I:L/A:L/E:P/RL:O/RC:X
  • Score:
    • Base: 3.7
    • Temporal: 3.4
  • Severity:
    • Base: Low
    • Temporal: Low

Code Examples​

Compliant code​

The application includes ARC and fstack-protector-all flags configured for binary file compilation

sample_app = executable('sample_app',
  'app/main.c',
  dependencies: libc_dep,
  # Added flag below
  c_args: '-fstack-protector-all',
  c_args: '-f-objc-arc',
  link_args: [
      linker_script_flags,
      map_file.format(meson.current_build_dir()+'/sample_app'),
  ],
  link_depends: linker_script_deps,
  native: false
)

Non compliant code​

The application has insecure configuration for binary file compilation

sample_app = executable('sample_app',
  'app/main.c',
  dependencies: libc_dep,
  # Added flag below
  c_args: '-fstack-protector-none',
  c_args: '-fno-objc-arc',
  link_args: [
      linker_script_flags,
      map_file.format(meson.current_build_dir()+'/sample_app'),
  ],
  link_depends: linker_script_deps,
  native: false
)

Requirements​

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