Bug 1797445 (CVE-2019-14492) - CVE-2019-14492 opencv: out-of-bounds read in function HaarEvaluator::OptFeature::calc() in cascadedetect.hpp leading to DoS
Summary: CVE-2019-14492 opencv: out-of-bounds read in function HaarEvaluator::OptFeatu...
Keywords:
Status: CLOSED CURRENTRELEASE
Alias: CVE-2019-14492
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: 1797447 1824135 1824136
Blocks: 1797452
TreeView+ depends on / blocked
 
Reported: 2020-02-03 08:02 UTC by Dhananjay Arunesh
Modified: 2021-02-16 20:40 UTC (History)
11 users (show)

Fixed In Version: opencv 3.4.7, opencv 4.1.1
Doc Type: If docs needed, set a value
Doc Text:
An out-of-bounds read flaw was found in OpenCV in the way the Cascade Classifier algorithm loaded and processed the Haar feature-based cascade classifiers. This flaw allows a remote attacker to provide a specially crafted classifier in the form of an XML file that, when loaded by an application linked to OpenCV, would crash the application, causing a denial of service.
Clone Of:
Environment:
Last Closed: 2020-07-28 08:10:15 UTC
Embargoed:

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Description Dhananjay Arunesh 2020-02-03 08:02:23 UTC 
An issue was discovered in OpenCV before 3.4.7 and 4.x before 4.1.1. There is an out of bounds read/write in the function HaarEvaluator::OptFeature::calc in modules/objdetect/src/cascadedetect.hpp, which leads to denial of service.

Reference:
http://lists.opensuse.org/opensuse-security-announce/2019-12/msg00025.html
https://github.com/opencv/opencv/compare/33b765d...4a7ca5a
https://github.com/opencv/opencv/compare/371bba8...ddbd10c
https://github.com/opencv/opencv/issues/15124
Comment 1 Dhananjay Arunesh 2020-02-03 08:03:43 UTC 
Created opencv tracking bugs for this issue:

Affects: fedora-all [bug 1797447]
Comment 2 Mauro Matteo Cascella 2020-04-15 09:12:54 UTC 
Upstream fix:
https://github.com/opencv/opencv/commit/321c74ccd6077bdea1d47450ca4fe955cb5b6330
Comment 6 Mauro Matteo Cascella 2020-04-15 15:04:07 UTC 
Statement:

The versions of OpenCV as shipped with Red Hat Enterprise Linux 7 and 8 are affected by this flaw. Although it's technically possible that classifiers are loaded from untrusted sources, this is probably an unlikely case in practice.
Comment 7 Mauro Matteo Cascella 2020-04-15 15:04:10 UTC 
Mitigation:

Avoid loading cascade classifiers from external untrusted sources.
Comment 8 Nicolas Chauvet (kwizart) 2020-07-28 08:10:15 UTC 
Fixed in 3.4.10-1 package in f31
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