diff options
| -rw-r--r-- | src/data-identify.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/src/data-identify.c b/src/data-identify.c index 88a472fb..1edfb9b2 100644 --- a/src/data-identify.c +++ b/src/data-identify.c @@ -95,6 +95,11 @@ next_openpgp_packet (unsigned char const **bufptr, size_t *buflen, if (!len) return gpg_error (GPG_ERR_NO_DATA); + /* First some blacklisting. */ + if (len >= 4 && !memcmp (buf, "\x89PNG", 4)) + return gpg_error (GPG_ERR_INV_PACKET); /* This is a PNG file. */ + + /* Start parsing. */ ctb = *buf++; len--; if ( !(ctb & 0x80) ) return gpg_error (GPG_ERR_INV_PACKET); /* Invalid CTB. */ |