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| author | Yukihiro "Matz" Matsumoto <[email protected]> | 2021-12-23 07:56:40 +0900 |
|---|---|---|
| committer | Yukihiro "Matz" Matsumoto <[email protected]> | 2021-12-23 07:57:58 +0900 |
| commit | 3b59c95ead70a779c6894f9975228f0443ad488d (patch) | |
| tree | 752a949154ffba646d53a6a1e3f1cc170593cd1c | |
| parent | 42a6872c2b87e97656d07ad6be9d71865554fae7 (diff) | |
| download | mruby-3b59c95ead70a779c6894f9975228f0443ad488d.tar.gz mruby-3b59c95ead70a779c6894f9975228f0443ad488d.zip | |
pack.c: check integer overflow in unpacking BER; fix #5611
| -rw-r--r-- | mrbgems/mruby-pack/src/pack.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/mrbgems/mruby-pack/src/pack.c b/mrbgems/mruby-pack/src/pack.c index f0d4b8d9e..1edaac93b 100644 --- a/mrbgems/mruby-pack/src/pack.c +++ b/mrbgems/mruby-pack/src/pack.c @@ -415,6 +415,9 @@ unpack_BER(mrb_state *mrb, const unsigned char *src, int srclen, mrb_value ary, const unsigned char *e = p + srclen; for (i=1; p<e; p++,i++) { + if (n > (MRB_INT_MAX>>7)) { + mrb_raise(mrb, E_RANGE_ERROR, "BER unpacking 'w' overflow"); + } n <<= 7; n |= *p & 0x7f; if ((*p & 0x80) == 0) break; |