CVE-2010-5109: Buffer Overflow
First published: Tue Jun 12 2012(Updated: )
Created <span class="bz_obsolete"><a href="attachment.cgi?id=591258&action=diff" name="attach_591258" title="proposed patch to fix possible buffer overflows.">attachment 591258</a> <a href="attachment.cgi?id=591258&action=edit" title="proposed patch to fix possible buffer overflows.">[details]</a></span> proposed patch to fix possible buffer overflows. Description of problem: compiler warning: call ... will always overflow destination buffer. indeed, there is a trivial bug in the code, no space is reserved for trailing \0. patch to fix: --- libytnef-1.5/ytnef.c 2004-08-26 17:09:05.000000000 +0000 +++ libytnef-1.5/ytnef.c 2012-06-08 19:34:07.826123387 +0000 @@ -1327,7 +1327,7 @@ ULONG compressedSize, uncompressedSize, magic, crc32; comp_Prebuf.size = strlen(RTF_PREBUF); - comp_Prebuf.data = calloc(comp_Prebuf.size, 1); + comp_Prebuf.data = calloc(comp_Prebuf.size+1, 1); strcpy(comp_Prebuf.data, RTF_PREBUF); src = p->data; Version-Release number of selected component (if applicable): libytnef-1.5-7.fc17
Credit: secalert@redhat.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Randall Hand Yerase\'s Tnef Stream Reader | ||
| Fedora | =16 | |
| Fedora | =17 |
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Reference Links
- http://www.openwall.com/lists/oss-security/2013/04/11/1
- https://bugzilla.redhat.com/show_bug.cgi?id=831322
- https://lists.fedoraproject.org/pipermail/package-announce/2012-July/083804.html
- https://lists.fedoraproject.org/pipermail/package-announce/2012-July/083853.html
- http://sourceforge.net/p/ytnef/bugs/13/
- http://www.securityfocus.com/bid/54484
- https://bugzilla.redhat.com/show_bug.cgi/attachment.cgi?id=591258&action=diff
- https://bugzilla.redhat.com/show_bug.cgi/attachment.cgi?id=591258&action=edit
- http://sourceforge.net/tracker/?func=detail&aid=2949686&group_id=70352&atid=527487
- http://sourceforge.net/tracker/?func=detail&aid=756215&group_id=70352&atid=533948
- https://bugzilla.redhat.com/show_bug.cgi/attachment.cgi?id=596239&action=diff
- https://bugzilla.redhat.com/show_bug.cgi/attachment.cgi?id=596239&action=edit
- https://admin.fedoraproject.org/updates/libytnef-1.5-8.fc17
- https://admin.fedoraproject.org/updates/libytnef-1.5-8.fc16
- https://admin.fedoraproject.org/updates/FEDORA-2012-10250/libytnef-1.5-8.fc17
- http://openwall.com/lists/oss-security/2013/04/11/1
- collector/redhat-bugzilla
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- version/fedora/17