Bug 1545249 (CVE-2017-17723) - CVE-2017-17723 exiv2: heap-based buffer over-read in Exiv2::Image::byteSwap4 in image.cpp
Summary: CVE-2017-17723 exiv2: heap-based buffer over-read in Exiv2::Image::byteSwap4...
Keywords:
Status: CLOSED NOTABUG
Alias: CVE-2017-17723
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
low
low
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
URL:
Whiteboard:
Depends On: 1545250 1547488 1547489
Blocks: 1545252
TreeView+ depends on / blocked
 
Reported: 2018-02-14 13:25 UTC by Laura Pardo
Modified: 2021-02-17 00:49 UTC (History)
5 users (show)

Fixed In Version:
Doc Type: If docs needed, set a value
Doc Text:
An integer wraparound, leading to heap-based out-of-bound read, was found in the way Exiv2 library prints Image File Directory(IFD) in TIFF images. By persuading a victim to open a crafted TIFF image, a remote attacker could crash the application or possibly retrieve a portion of memory.
Clone Of:
Environment:
Last Closed: 2018-03-14 09:18:20 UTC
Embargoed:

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Description Laura Pardo 2018-02-14 13:25:18 UTC 
A flaw was found in Exiv2 0.26, there is a integer wraparound in the
Exiv2::Image::printIFDStructure function, leading to a heap-based buffer
over-read in the Exiv2::Image::byteSwap4 function in image.cpp. Remote
attackers can exploit this vulnerability to disclose memory data or cause a
denial of service via a crafted TIFF file.


References:
https://bugzilla.redhat.com/show_bug.cgi?id=1524104
https://github.com/Exiv2/exiv2/issues/229
Comment 1 Laura Pardo 2018-02-14 13:25:41 UTC 
Created exiv2 tracking bugs for this issue:

Affects: fedora-all [bug 1545250]
Comment 2 Riccardo Schirone 2018-02-21 12:18:28 UTC 
Patches:

https://github.com/Exiv2/exiv2/commit/6e3855aed7ba8bb4731fc4087ca7f9078b2f3d97
https://github.com/Exiv2/exiv2/commit/74cb5bab132ed76adf15df172c5e8b58cddaa96c
Comment 6 Riccardo Schirone 2018-02-21 12:58:31 UTC 
Statement:

This issue did not affect the versions of Exiv2 as shipped with Red Hat Enterprise Linux 6 and 7.
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