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Code Issues Releases Wiki Activity

Must not compare orig_file_size with fi->st_size() during ::unpack

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This commit is contained in:
John Reiser 2015-05-09 17:47:17 -07:00
parent b182b50f24
commit 83ce7dc62f
2 changed files with 3 additions and 5 deletions
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6
src/p_lx_elf.cpp
View File

@ -3014,8 +3014,7 @@ void PackLinuxElf64::unpack(OutputFile *fo)
p_info hbuf; fi->readx(&hbuf, sizeof(hbuf));
unsigned orig_file_size = get_te32(&hbuf.p_filesize);
blocksize = get_te32(&hbuf.p_blocksize);
if (file_size > (off_t)orig_file_size || blocksize > orig_file_size
|| orig_file_size > fi->st_size())
if (file_size > (off_t)orig_file_size || blocksize > orig_file_size)
throwCantUnpack("p_info corrupted");
ibuf.alloc(blocksize + OVERHEAD);
@ -3534,8 +3533,7 @@ void PackLinuxElf32::unpack(OutputFile *fo)
p_info hbuf; fi->readx(&hbuf, sizeof(hbuf));
unsigned orig_file_size = get_te32(&hbuf.p_filesize);
blocksize = get_te32(&hbuf.p_blocksize);
if (file_size > (off_t)orig_file_size || blocksize > orig_file_size
|| orig_file_size > fi->st_size())
if (file_size > (off_t)orig_file_size || blocksize > orig_file_size)
throwCantUnpack("p_info corrupted");
ibuf.alloc(blocksize + OVERHEAD);

2
src/p_unix.cpp
View File

@ -556,7 +556,7 @@ void PackUnix::unpack(OutputFile *fo)
orig_file_size = get_te32(&hbuf.p_filesize);
blocksize = get_te32(&hbuf.p_blocksize);
if (file_size != (off_t)orig_file_size || blocksize > orig_file_size)
if (file_size > (off_t)orig_file_size || blocksize > orig_file_size)
throwCantUnpack("file header corrupted");
}
else