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Encoding: Truncate password candidates in UTF8 -> UTF16 conversion if it contains an invalid UTF8 byte sequence
This commit is contained in:
Jens Steube
parent
577fada1de
commit
f72f2b0f09
@ -1711,6 +1711,15 @@ DECLSPEC u32 hc_bfe_S (const u32 a, const u32 b, const u32 c)
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return r;
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}
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DECLSPEC u32 hc_bytealign_be_S (const u32 a, const u32 b, const int c)
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{
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const int c_mod_4 = c & 3;
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const u32 r = hc_byte_perm_S (b, a, (0x76543210 >> (c_mod_4 * 4)) & 0xffff);
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return r;
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}
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DECLSPEC u32x hc_bytealign (const u32x a, const u32x b, const int c)
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{
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const int c_mod_4 = c & 3;
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@ -2056,6 +2065,152 @@ DECLSPEC int hc_enc_has_next (hc_enc_t *hc_enc, const int sz)
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return 0;
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}
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DECLSPEC int hc_enc_validate_utf8 (const u32 *src_buf, const int src_pos, const int extraBytesToRead)
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{
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const u8 *src_ptr = (const u8 *) src_buf;
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if (extraBytesToRead == 0)
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{
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const u8 c0 = src_ptr[src_pos + 0]; if (c0 >= 0x80) return 0;
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}
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else if (extraBytesToRead == 1)
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{
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const u8 c0 = src_ptr[src_pos + 0]; if ((c0 < 0xc2) || (c0 > 0xdf)) return 0;
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const u8 c1 = src_ptr[src_pos + 1]; if ((c1 < 0x80) || (c1 > 0xbf)) return 0;
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}
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else if (extraBytesToRead == 2)
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{
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const u8 c0 = src_ptr[src_pos + 0];
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if ((c0 >= 0xe0) && (c0 <= 0xe0))
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{
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const u8 c1 = src_ptr[src_pos + 1]; if ((c1 < 0xa0) || (c1 > 0xbf)) return 0;
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const u8 c2 = src_ptr[src_pos + 2]; if ((c2 < 0x80) || (c2 > 0xbf)) return 0;
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}
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else if ((c0 >= 0xe1) && (c0 <= 0xec))
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{
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const u8 c1 = src_ptr[src_pos + 1]; if ((c1 < 0x80) || (c1 > 0xbf)) return 0;
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const u8 c2 = src_ptr[src_pos + 2]; if ((c2 < 0x80) || (c2 > 0xbf)) return 0;
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}
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else if ((c0 >= 0xed) && (c0 <= 0xed))
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{
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const u8 c1 = src_ptr[src_pos + 1]; if ((c1 < 0x80) || (c1 > 0x9f)) return 0;
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const u8 c2 = src_ptr[src_pos + 2]; if ((c2 < 0x80) || (c2 > 0xbf)) return 0;
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}
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else if ((c0 >= 0xee) && (c0 <= 0xef))
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{
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const u8 c1 = src_ptr[src_pos + 1]; if ((c1 < 0x80) || (c1 > 0xbf)) return 0;
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const u8 c2 = src_ptr[src_pos + 2]; if ((c2 < 0x80) || (c2 > 0xbf)) return 0;
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}
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else
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{
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return 0;
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}
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}
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else if (extraBytesToRead == 3)
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{
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const u8 c0 = src_ptr[src_pos + 0];
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if ((c0 >= 0xf0) && (c0 <= 0xf0))
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{
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const u8 c1 = src_ptr[src_pos + 1]; if ((c1 < 0x90) || (c1 > 0xbf)) return 0;
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const u8 c2 = src_ptr[src_pos + 2]; if ((c2 < 0x80) || (c2 > 0xbf)) return 0;
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const u8 c3 = src_ptr[src_pos + 3]; if ((c3 < 0x80) || (c3 > 0xbf)) return 0;
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}
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else if ((c0 >= 0xf1) && (c0 <= 0xf3))
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{
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const u8 c1 = src_ptr[src_pos + 1]; if ((c1 < 0x80) || (c1 > 0xbf)) return 0;
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const u8 c2 = src_ptr[src_pos + 2]; if ((c2 < 0x80) || (c2 > 0xbf)) return 0;
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const u8 c3 = src_ptr[src_pos + 3]; if ((c3 < 0x80) || (c3 > 0xbf)) return 0;
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}
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else if ((c0 >= 0xf4) && (c0 <= 0xf4))
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{
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const u8 c1 = src_ptr[src_pos + 1]; if ((c1 < 0x80) || (c1 > 0xbf)) return 0;
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const u8 c2 = src_ptr[src_pos + 2]; if ((c2 < 0x80) || (c2 > 0xbf)) return 0;
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const u8 c3 = src_ptr[src_pos + 3]; if ((c3 < 0x80) || (c3 > 0xbf)) return 0;
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}
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else
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{
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return 0;
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}
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}
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return 1;
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}
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DECLSPEC int hc_enc_validate_utf8_global (GLOBAL_AS const u32 *src_buf, const int src_pos, const int extraBytesToRead)
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{
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GLOBAL_AS const u8 *src_ptr = (GLOBAL_AS const u8 *) src_buf;
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if (extraBytesToRead == 0)
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{
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const u8 c0 = src_ptr[src_pos + 0]; if (c0 >= 0x80) return 0;
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}
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else if (extraBytesToRead == 1)
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{
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const u8 c0 = src_ptr[src_pos + 0]; if ((c0 < 0xc2) || (c0 > 0xdf)) return 0;
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const u8 c1 = src_ptr[src_pos + 1]; if ((c1 < 0x80) || (c1 > 0xbf)) return 0;
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}
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else if (extraBytesToRead == 2)
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{
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const u8 c0 = src_ptr[src_pos + 0];
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if ((c0 >= 0xe0) && (c0 <= 0xe0))
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{
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const u8 c1 = src_ptr[src_pos + 1]; if ((c1 < 0xa0) || (c1 > 0xbf)) return 0;
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const u8 c2 = src_ptr[src_pos + 2]; if ((c2 < 0x80) || (c2 > 0xbf)) return 0;
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}
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else if ((c0 >= 0xe1) && (c0 <= 0xec))
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{
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const u8 c1 = src_ptr[src_pos + 1]; if ((c1 < 0x80) || (c1 > 0xbf)) return 0;
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const u8 c2 = src_ptr[src_pos + 2]; if ((c2 < 0x80) || (c2 > 0xbf)) return 0;
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}
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else if ((c0 >= 0xed) && (c0 <= 0xed))
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{
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const u8 c1 = src_ptr[src_pos + 1]; if ((c1 < 0x80) || (c1 > 0x9f)) return 0;
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const u8 c2 = src_ptr[src_pos + 2]; if ((c2 < 0x80) || (c2 > 0xbf)) return 0;
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}
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else if ((c0 >= 0xee) && (c0 <= 0xef))
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{
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const u8 c1 = src_ptr[src_pos + 1]; if ((c1 < 0x80) || (c1 > 0xbf)) return 0;
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const u8 c2 = src_ptr[src_pos + 2]; if ((c2 < 0x80) || (c2 > 0xbf)) return 0;
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}
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else
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{
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return 0;
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}
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}
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else if (extraBytesToRead == 3)
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{
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const u8 c0 = src_ptr[src_pos + 0];
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if ((c0 >= 0xf0) && (c0 <= 0xf0))
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{
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const u8 c1 = src_ptr[src_pos + 1]; if ((c1 < 0x90) || (c1 > 0xbf)) return 0;
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const u8 c2 = src_ptr[src_pos + 2]; if ((c2 < 0x80) || (c2 > 0xbf)) return 0;
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const u8 c3 = src_ptr[src_pos + 3]; if ((c3 < 0x80) || (c3 > 0xbf)) return 0;
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}
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else if ((c0 >= 0xf1) && (c0 <= 0xf3))
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{
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const u8 c1 = src_ptr[src_pos + 1]; if ((c1 < 0x80) || (c1 > 0xbf)) return 0;
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const u8 c2 = src_ptr[src_pos + 2]; if ((c2 < 0x80) || (c2 > 0xbf)) return 0;
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const u8 c3 = src_ptr[src_pos + 3]; if ((c3 < 0x80) || (c3 > 0xbf)) return 0;
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}
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else if ((c0 >= 0xf4) && (c0 <= 0xf4))
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{
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const u8 c1 = src_ptr[src_pos + 1]; if ((c1 < 0x80) || (c1 > 0xbf)) return 0;
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const u8 c2 = src_ptr[src_pos + 2]; if ((c2 < 0x80) || (c2 > 0xbf)) return 0;
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const u8 c3 = src_ptr[src_pos + 3]; if ((c3 < 0x80) || (c3 > 0xbf)) return 0;
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}
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else
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{
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return 0;
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}
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}
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return 1;
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}
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// Input buffer and Output buffer size has to be multiple of 4 and at least of size 4.
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// The output buffer is not zero padded, so entire buffer has to be set all zero before entering this function or truncated afterwards.
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@ -2115,6 +2270,15 @@ DECLSPEC int hc_enc_next (hc_enc_t *hc_enc, const u32 *src_buf, const int src_le
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return dst_pos;
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}
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if (hc_enc_validate_utf8 (src_buf, src_pos, extraBytesToRead) == 0)
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{
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// broken input
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hc_enc->pos = src_len;
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return dst_pos;
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}
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u32 ch = 0;
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switch (extraBytesToRead)
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@ -2252,6 +2416,15 @@ DECLSPEC int hc_enc_next_global (hc_enc_t *hc_enc, GLOBAL_AS const u32 *src_buf,
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return dst_pos;
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}
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if (hc_enc_validate_utf8_global (src_buf, src_pos, extraBytesToRead) == 0)
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{
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// broken input
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hc_enc->pos = src_len;
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return dst_pos;
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}
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u32 ch = 0;
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switch (extraBytesToRead)
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@ -55,6 +55,7 @@
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- Constants: Make const char * pointers actually const char * const pointers
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- Deprecated Plugins: Add new module function module_deprecated_notice() to mark a plugin as deprecated and to return a free text user notice
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- Deprecated Plugins: Marked plugins 2500/2501 and 16800/16801 as deprecated
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- Encoding: Truncate password candidates in UTF8 -> UTF16 conversion if it contains an invalid UTF8 byte sequence
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- Filehandling: Use const char for fopen mode to fix -Wwrite-strings warnings
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- Hardware Monitor: Added support for OverDrive 7 and 8 based GPUs
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- HIP Kernels: Dependency on hip/hip runtime.h has been removed to enable easier integration of the HIP backend under Windows
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