diff options
Diffstat (limited to 'source')
| -rw-r--r-- | source/pdf/pdf-crypt.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/source/pdf/pdf-crypt.c b/source/pdf/pdf-crypt.c index e40fad95..daeead1a 100644 --- a/source/pdf/pdf-crypt.c +++ b/source/pdf/pdf-crypt.c @@ -97,6 +97,12 @@ pdf_new_crypt(fz_context *ctx, pdf_obj *dict, pdf_obj *id) pdf_free_crypt(ctx, crypt); fz_throw(ctx, FZ_ERROR_GENERIC, "encryption dictionary missing version and revision value"); } + if (crypt->r < 1 || crypt->r > 6) + { + int r = crypt->r; + pdf_free_crypt(ctx, crypt); + fz_throw(ctx, FZ_ERROR_GENERIC, "unknown crypt revision %d", r); + } obj = pdf_dict_gets(dict, "O"); if (pdf_is_string(obj) && pdf_to_str_len(obj) == 32) |