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Skip encrypted files when no passphrase is supplied

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simon987 2023-05-18 20:09:17 -04:00
parent 3ffa30cc6f
commit e2e0cf260f
1 changed files with 10 additions and 2 deletions
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12
third-party/libscan/libscan/arc/arc.c vendored
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@ -4,7 +4,6 @@
#include <stdlib.h> #include <stdlib.h>
#include <string.h> #include <string.h>
#include <fcntl.h> #include <fcntl.h>
#include <openssl/evp.h>
#include <pcre.h> #include <pcre.h>
#define MAX_DECOMPRESSED_SIZE_RATIO 40.0 #define MAX_DECOMPRESSED_SIZE_RATIO 40.0
@ -211,11 +210,20 @@ scan_code_t parse_archive(scan_arc_ctx_t *ctx, vfile_t *f, document_t *doc, pcre
double decompressed_size_ratio = (double) sub_job->vfile.st_size / (double) f->st_size; double decompressed_size_ratio = (double) sub_job->vfile.st_size / (double) f->st_size;
if (decompressed_size_ratio > MAX_DECOMPRESSED_SIZE_RATIO) { if (decompressed_size_ratio > MAX_DECOMPRESSED_SIZE_RATIO) {
CTX_LOG_DEBUGF("arc.c", "Skipped %s, possible zip bomb (decompressed_size_ratio=%f)", sub_job->filepath, CTX_LOG_ERRORF("arc.c", "Skipped %s, possible zip bomb (decompressed_size_ratio=%f)",
sub_job->filepath,
decompressed_size_ratio); decompressed_size_ratio);
break; break;
} }
if ((archive_entry_is_encrypted(entry) || archive_entry_is_data_encrypted(entry) ||
archive_entry_is_metadata_encrypted(entry)) && ctx->passphrase[0] == 0) {
// Is encrypted but no password is specified, skip
CTX_LOG_ERRORF("arc.c", "Skipped %s, archive is encrypted but no passphrase is supplied",
doc->filepath);
break;
}
// Handle excludes // Handle excludes
if (exclude != NULL && EXCLUDED(sub_job->filepath)) { if (exclude != NULL && EXCLUDED(sub_job->filepath)) {
CTX_LOG_DEBUGF("arc.c", "Excluded: %s", sub_job->filepath); CTX_LOG_DEBUGF("arc.c", "Excluded: %s", sub_job->filepath);