Bug 1545232 (CVE-2017-17725) - CVE-2017-17725 exiv2: heap-based buffer over-read in Exiv2::getULong function in types.cpp
Summary: CVE-2017-17725 exiv2: heap-based buffer over-read in Exiv2::getULong function...
Keywords:
Status: CLOSED NOTABUG
Alias: CVE-2017-17725
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: 1545233 1547130 1547207
Blocks: 1545252
TreeView+ depends on / blocked
 
Reported: 2018-02-14 12:48 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 reads ICC profiles embedded in a JP2 image. By persuading a victim to open a crafted JP2 image, a remote attacker could crash the application or possibly retrieve a portion of memory.
Clone Of:
Environment:
Last Closed: 2018-03-14 09:18:29 UTC
Embargoed:

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Description Laura Pardo 2018-02-14 12:48:25 UTC 
A flaw was found in Exiv2 0.26. There is an integer wraparound leading to a heap-based buffer over-read in the Exiv2::getULong function in types.cpp, called while parsing an ICC profile. Remote attackers can exploit the vulnerability to cause a denial of service via a crafted JP2 image file.


References:
https://bugzilla.redhat.com/show_bug.cgi?id=1525055
https://github.com/Exiv2/exiv2/issues/188

Patch:
https://github.com/Exiv2/exiv2/pull/193
Comment 1 Laura Pardo 2018-02-14 12:48:56 UTC 
Created exiv2 tracking bugs for this issue:

Affects: fedora-all [bug 1545233]
Comment 2 Riccardo Schirone 2018-02-20 09:49:23 UTC 
It is important to note that without AddressSanitizer enabled, the out of bound read in Exiv2::getULong does not have impact, since it is at most 4 bytes, however another out of bound read in Jp2Image::readMetadata function is triggered by the same public POC, which could crash the program or leak data.
Comment 5 Riccardo Schirone 2018-02-20 16:26:23 UTC 
Statement:

This issue did not affect the versions of Exiv2 as shipped with Red Hat Enterprise Linux 6 and 7 as they did not include support for ICC profiles.
Comment 8 Riccardo Schirone 2018-02-22 09:13:38 UTC 
Introduced by:
https://github.com/Exiv2/exiv2/commit/699e1c744e50782e3ed7411cc6ac28260aa169c0
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