CVE-2013-1953: Buffer Overflow
First published: Thu Apr 11 2013(Updated: )
A buffer overflow flaw was reported in autotrace's input_bmp_reader() function. When autotrace is compiled with FORTIFY_SOURCE, this is caught and turned into a simple denial of service. As reported: In input-bmp.c, the input_bmp_reader() function creates a buffer on the stack: 91 unsigned char buffer[64]; Later on 169 else if (Bitmap_File_Head.biSize <= 64) /* Probably OS/2 2.x */ 170 { 171 if (!ReadOK (fd, buffer, Bitmap_File_Head.biSize - 4)) We control Bitmap_File_Head.biSize. A value of 0 meets the <=64 requirements, and 0 - 4 should result in almost 4294967295 bytes being read into the buffer.
Credit: secalert@redhat.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Autotrace Project Autotrace | =0.31.1 |
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Reference Links
- https://access.redhat.com/security/cve/CVE-2013-1953
- http://www.openwall.com/lists/oss-security/2013/04/16/3
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=952668
- https://bugzilla.redhat.com/show_bug.cgi/attachment.cgi?id=766451&action=diff
- https://bugzilla.redhat.com/show_bug.cgi/attachment.cgi?id=766451&action=edit
- https://bugzilla.redhat.com/show_bug.cgi?id=951257
- http://www.mandriva.com/security/advisories?name=MDVSA-2013:190
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