diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/libtls/tls_aead_expl.c | 8 | ||||
| -rw-r--r-- | src/libtls/tls_aead_impl.c | 8 |
2 files changed, 16 insertions, 0 deletions
diff --git a/src/libtls/tls_aead_expl.c b/src/libtls/tls_aead_expl.c index 5e4d33e14..37779a1ee 100644 --- a/src/libtls/tls_aead_expl.c +++ b/src/libtls/tls_aead_expl.c @@ -106,6 +106,7 @@ METHOD(tls_aead_t, decrypt, bool, chunk_t assoc, mac, iv; u_int8_t bs, padlen; sigheader_t hdr; + size_t i; iv.len = this->crypter->get_iv_size(this->crypter); if (data->len < iv.len) @@ -126,6 +127,13 @@ METHOD(tls_aead_t, decrypt, bool, padlen = data->ptr[data->len - 1]; if (padlen < data->len) { /* If padding looks valid, remove it */ + for (i = data->len - padlen - 1; i < data->len - 1; i++) + { + if (data->ptr[i] != padlen) + { + return FALSE; + } + } data->len -= padlen + 1; } diff --git a/src/libtls/tls_aead_impl.c b/src/libtls/tls_aead_impl.c index fb14026e0..d529ceba7 100644 --- a/src/libtls/tls_aead_impl.c +++ b/src/libtls/tls_aead_impl.c @@ -100,6 +100,7 @@ METHOD(tls_aead_t, decrypt, bool, chunk_t assoc, mac, iv; u_int8_t bs, padlen; sigheader_t hdr; + size_t i; bs = this->crypter->get_block_size(this->crypter); if (data->len < bs || data->len < this->iv.len || data->len % bs) @@ -116,6 +117,13 @@ METHOD(tls_aead_t, decrypt, bool, padlen = data->ptr[data->len - 1]; if (padlen < data->len) { /* If padding looks valid, remove it */ + for (i = data->len - padlen - 1; i < data->len - 1; i++) + { + if (data->ptr[i] != padlen) + { + return FALSE; + } + } data->len -= padlen + 1; } |