Date: Thu, 23 Nov 2017 16:04:52 +0000 (UTC) From: Ed Maste <emaste@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r326136 - head/contrib/binutils/bfd Message-ID: <201711231604.vANG4qbQ080138@repo.freebsd.org>
next in thread | raw e-mail | index | archive | help
Author: emaste Date: Thu Nov 23 16:04:52 2017 New Revision: 326136 URL: https://svnweb.freebsd.org/changeset/base/326136 Log: bfd: avoid crash on corrupt binaries From binutils commits 5a4b0ccc20ba30caef53b01bee2c0aaa5b855339 and 7e1e19887abd24aeb15066b141cdff5541e0ec8e, made available under GPLv2 by Nick Clifton. PR: 198824 MFC after: 1 week Security: CVE-2014-8501 Security: CVE-2014-8502 Modified: head/contrib/binutils/bfd/peXXigen.c Modified: head/contrib/binutils/bfd/peXXigen.c ============================================================================== --- head/contrib/binutils/bfd/peXXigen.c Thu Nov 23 14:30:41 2017 (r326135) +++ head/contrib/binutils/bfd/peXXigen.c Thu Nov 23 16:04:52 2017 (r326136) @@ -448,6 +448,17 @@ _bfd_XXi_swap_aouthdr_in (bfd * abfd, { int idx; + /* PR 17512: Corrupt PE binaries can cause seg-faults. */ + if (a->NumberOfRvaAndSizes > 16) + { + (*_bfd_error_handler) + (_("%B: aout header specifies an invalid number of data-directory entries: %d"), + abfd, a->NumberOfRvaAndSizes); + /* Paranoia: If the number is corrupt, then assume that the + actual entries themselves might be corrupt as well. */ + a->NumberOfRvaAndSizes = 0; + } + for (idx = 0; idx < 16; idx++) { /* If data directory is empty, rva also should be 0. */ @@ -1426,6 +1437,15 @@ pe_print_edata (bfd * abfd, void * vfile) section->name); return TRUE; } + } + + /* PR 17512: Handle corrupt PE binaries. */ + if (datasize < 36) + { + fprintf (file, + _("\nThere is an export table in %s, but it is too small (%d)\n"), + section->name, (int) datasize); + return TRUE; } fprintf (file, _("\nThere is an export table in %s at 0x%lx\n"),
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?201711231604.vANG4qbQ080138>