Bug 1207142 (CVE-2015-2753, CVE-2015-2754, CVE-2015-2776) - CVE-2015-2753 CVE-2015-2754 CVE-2015-2776 freexl: multiple flaws when parsing malformed input
Summary: CVE-2015-2753 CVE-2015-2754 CVE-2015-2776 freexl: multiple flaws when parsing...
Keywords:
Status: CLOSED WONTFIX
Alias: CVE-2015-2753, CVE-2015-2754, CVE-2015-2776
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
URL:
Whiteboard:
Depends On: 1207143 1207144 1207145
Blocks: 1207147
TreeView+ depends on / blocked
 
Reported: 2015-03-30 10:14 UTC by Martin Prpič
Modified: 2019-09-29 13:31 UTC (History)
12 users (show)

Fixed In Version: FreeXL 1.0.1
Doc Type: Bug Fix
Doc Text:
Clone Of:
Environment:
Last Closed: 2017-09-12 12:25:25 UTC


Attachments (Terms of Use)

Description Martin Prpič 2015-03-30 10:14:04 UTC
The following flaws have been found in FreeXL, a library that parses Microsoft Excel spreadsheets:

#1: A flaw was found in the way FreeXL reads sectors from the input file. A specially crafted file could possibly result in stack corruption near freexl.c:3752.

Reproducer: https://www.dropbox.com/s/3htzndywvtmomlx/freexl_9f74b0e8?dl=0

#2: A flaw was found in the function allocate_cells(). A specially crafted file with invalid workbook dimensions could possibly result in stack corruption near freexl.c:1074

Reproducer: https://www.dropbox.com/s/dcnbbntf7lp03yn/freexl_c9be2aa7?dl=0

#3: A flaw was found in the way FreeXL handles a premature EOF. A specially crafted input file could possibly result in stack corruption near freexl.c:1131

Reproducer: https://www.dropbox.com/s/66srfory903w6cl/freexl_d7273f72?dl=0

#4: FreeXL 1.0.0g did not properly check requests for workbook memory allocation. A specially crafted input file could cause a Denial of Service, or possibly write onto the stack.

Reproducer (ulimit -Sv 128000):
https://www.dropbox.com/s/gh61gzaf8jj30hj/freexl_6889d18b?dl=0

CVE assignments and original report at:

http://seclists.org/oss-sec/2015/q1/1004

Upstream patch:

https://www.gaia-gis.it/fossil/freexl/fdiff?v1=2e167b337481dda3&v2=61618ce51a9b0c15&sbs=1

These flaws are fixed in version 1.0.1 of FreeXL:

http://www.gaia-gis.it/gaia-sins/freexl-1.0.1.tar.gz

Comment 1 Martin Prpič 2015-03-30 10:16:09 UTC
These flaws have already been fixed in Fedora via:

FEDORA-2015-4444      freexl-1.0.1-1.fc20
FEDORA-2015-4435      freexl-1.0.1-1.fc21
FEDORA-2015-4431      freexl-1.0.1-1.fc22

Comment 3 Martin Prpič 2015-03-30 10:16:49 UTC
Created freexl tracking bugs for this issue:

Affects: epel-6 [bug 1207143]
Affects: epel-7 [bug 1207144]


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