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CVE-2019-14492

Publication date 1 August 2019

Last updated 24 July 2024

Ubuntu priority

Medium

Why this priority?

Cvss 3 Severity Score

7.5 · High

Score breakdown

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.

From the Ubuntu Security Team

It was discovered that OpenCV incorrectly handled certain files. An attaacker could possibly use this issue to cause a denial of service.

Read the notes from the security team

Status

Package Ubuntu Release Status
opencv 23.04 lunar
Not affected
22.10 kinetic
Not affected
22.04 LTS jammy
Not affected
21.10 impish
Not affected
21.04 hirsute
Not affected
20.10 groovy
Not affected
20.04 LTS focal
Not affected
19.10 eoan Ignored end of life
19.04 disco Ignored end of life
18.04 LTS bionic
16.04 LTS xenial Ignored see notes
14.04 LTS trusty Ignored see notes

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Notes

ccdm94

the commit that fixes this issue is the same as the one for CVE-2019-14491. See: https://github.com/opencv/opencv/pull/15150. In xenial and earlier, it is necessary to backport the fix for this CVE. However, changes in the code that have occurred since the release of versions available in xenial and earlier cause this backport to be quite intrusive. To backport and properly apply the patch, it would be necessary to alter library functions that are exported, meaning that it would be necessary to alter their interfaces, which could end up causing regressions in software that uses the opencv library to operate. It also seems like a backported version of the patch does not completely fix the vulnerability, with the POC file causing a similar crash, even after the fix is applied.

Patch details

For informational purposes only. We recommend not to cherry-pick updates. How can I get the fixes?

Package Patch details
opencv

Severity score breakdown

Parameter Value
Base score 7.5 · High
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Scope Unchanged
Confidentiality None
Integrity impact None
Availability impact High
Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H