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[Bug libc/19729] New: out of bounds heap read on invalid utf-8 inputs in stringprep_utf8_nfkc_normalize
- From: "hanno at hboeck dot de" <sourceware-bugzilla at sourceware dot org>
- To: glibc-bugs at sourceware dot org
- Date: Thu, 25 Feb 2016 12:25:48 +0000
- Subject: [Bug libc/19729] New: out of bounds heap read on invalid utf-8 inputs in stringprep_utf8_nfkc_normalize
- Auto-submitted: auto-generated
https://sourceware.org/bugzilla/show_bug.cgi?id=19729
Bug ID: 19729
Summary: out of bounds heap read on invalid utf-8 inputs in
stringprep_utf8_nfkc_normalize
Product: glibc
Version: 2.23
Status: NEW
Severity: normal
Priority: P2
Component: libc
Assignee: unassigned at sourceware dot org
Reporter: hanno at hboeck dot de
CC: drepper.fsp at gmail dot com
Target Milestone: ---
Created attachment 9039
--> https://sourceware.org/bugzilla/attachment.cgi?id=9039&action=edit
sample input.
libidn's stringprep_utf8_nfkc_normalize function may read out of bounds if an
invalid utf-8 string gets passed. glibc bundles libidn.
This has been fixed upstream here:
http://git.savannah.gnu.org/gitweb/?p=libidn.git;a=commit;h=1fbee57ef3c72db2206dd87e4162108b2f425555
Attached is a sample input that can be triggered with idn -n.
Found with american fuzzy lop.
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