diff options
| -rw-r--r-- | archival/libarchive/decompress_unlzma.c | 11 | ||||
| -rwxr-xr-x | testsuite/unlzma.tests | 21 | ||||
| -rw-r--r-- | testsuite/unlzma_issue_1.lzma | bin | 0 -> 171 bytes | |||
| -rw-r--r-- | testsuite/unlzma_issue_2.lzma | bin | 0 -> 261 bytes |
4 files changed, 32 insertions, 0 deletions
diff --git a/archival/libarchive/decompress_unlzma.c b/archival/libarchive/decompress_unlzma.c index be43424..80a4538 100644 --- a/archival/libarchive/decompress_unlzma.c +++ b/archival/libarchive/decompress_unlzma.c @@ -11,6 +11,13 @@ #include "libbb.h" #include "bb_archive.h" +#if 0 +# define dbg(...) bb_error_msg(__VA_ARGS__) +#else +# define dbg(...) ((void)0) +#endif + + #if ENABLE_FEATURE_LZMA_FAST # define speed_inline ALWAYS_INLINE # define size_inline @@ -417,6 +424,10 @@ unpack_lzma_stream(transformer_state_t *xstate) for (; num_bits2 != LZMA_NUM_ALIGN_BITS; num_bits2--) rep0 = (rep0 << 1) | rc_direct_bit(rc); rep0 <<= LZMA_NUM_ALIGN_BITS; + if ((int32_t)rep0 < 0) { + dbg("%d rep0:%d", __LINE__, rep0); + goto bad; + } prob3 = p + LZMA_ALIGN; } i2 = 1; diff --git a/testsuite/unlzma.tests b/testsuite/unlzma.tests new file mode 100755 index 0000000..0e98afe --- /dev/null +++ b/testsuite/unlzma.tests @@ -0,0 +1,21 @@ +#!/bin/sh + +. ./testing.sh + +# testing "test name" "commands" "expected result" "file input" "stdin" +# file input will be file called "input" +# test can create a file "actual" instead of writing to stdout + +# Damaged encrypted streams +testing "unlzma (bad archive 1)" \ + "unlzma <unlzma_issue_1.lzma >/dev/null; echo \$?" \ +"1 +" "" "" + +# Damaged encrypted streams +testing "unlzma (bad archive 2)" \ + "unlzma <unlzma_issue_2.lzma >/dev/null; echo \$?" \ +"1 +" "" "" + +exit $FAILCOUNT diff --git a/testsuite/unlzma_issue_1.lzma b/testsuite/unlzma_issue_1.lzma Binary files differnew file mode 100644 index 0000000..fb70104 --- /dev/null +++ b/testsuite/unlzma_issue_1.lzma diff --git a/testsuite/unlzma_issue_2.lzma b/testsuite/unlzma_issue_2.lzma Binary files differnew file mode 100644 index 0000000..853f0fc --- /dev/null +++ b/testsuite/unlzma_issue_2.lzma |