diff options
Diffstat (limited to 'vendor/golang.org/x/crypto/ssh/cipher.go')
| -rw-r--r-- | vendor/golang.org/x/crypto/ssh/cipher.go | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/vendor/golang.org/x/crypto/ssh/cipher.go b/vendor/golang.org/x/crypto/ssh/cipher.go index bddbde5d..f8bdf498 100644 --- a/vendor/golang.org/x/crypto/ssh/cipher.go +++ b/vendor/golang.org/x/crypto/ssh/cipher.go @@ -394,6 +394,10 @@ func (c *gcmCipher) readCipherPacket(seqNum uint32, r io.Reader) ([]byte, error) } c.incIV() + if len(plain) == 0 { + return nil, errors.New("ssh: empty packet") + } + padding := plain[0] if padding < 4 { // padding is a byte, so it automatically satisfies @@ -710,6 +714,10 @@ func (c *chacha20Poly1305Cipher) readCipherPacket(seqNum uint32, r io.Reader) ([ plain := c.buf[4:contentEnd] s.XORKeyStream(plain, plain) + if len(plain) == 0 { + return nil, errors.New("ssh: empty packet") + } + padding := plain[0] if padding < 4 { // padding is a byte, so it automatically satisfies |