33 lines
1.2 KiB
Diff
33 lines
1.2 KiB
Diff
Description: CVE-2017-11110: Heap buffer overflow in ole_init
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Origin: vendor, https://build.opensuse.org/package/view_file/openSUSE:Maintenance:6985/catdoc.openSUSE_Leap_42.2_Update/CVE-2017-11110.patch?rev=d437c3be72c2e5a3516b75f4e9de6b35
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Bug-Debian: https://bugs.debian.org/867717
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Bug-SuSE: https://bugzilla.novell.com/show_bug.cgi?id=1047877
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Forwarded: no
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Author: Andreas Stieger <astieger@suse.com>
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Reviewed-by: Salvatore Bonaccorso <carnil@debian.org>
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Last-Update: 2017-07-20
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--- src/ole.c
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+++ src/ole.c
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@@ -106,6 +106,11 @@ FILE* ole_init(FILE *f, void *buffer, si
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return NULL;
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}
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sectorSize = 1<<getshort(oleBuf,0x1e);
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+ /* CVE-2017-11110 */
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+ if (sectorSize < 4) {
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+ fprintf(stderr, "sectorSize < 4 not supported\n");
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+ return NULL;
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+ }
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shortSectorSize=1<<getshort(oleBuf,0x20);
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/* Read BBD into memory */
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@@ -147,7 +152,7 @@ FILE* ole_init(FILE *f, void *buffer, si
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}
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fseek(newfile, 512+mblock*sectorSize, SEEK_SET);
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- if(fread(tmpBuf+MSAT_ORIG_SIZE+(sectorSize-4)*i,
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+ if(fread(tmpBuf+MSAT_ORIG_SIZE+(sectorSize-4)*i, /* >=4 for CVE-2017-11110 */
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1, sectorSize, newfile) != sectorSize) {
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fprintf(stderr, "Error read MSAT!\n");
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ole_finish();
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