--- title: "CVE-2019-14492\n | Ubuntu" description: Ubuntu is an open source software operating system that runs from the desktop, to the cloud, to all your internet connected things. url: https://ubuntu.com/security/CVE-2019-14492?format=md keywords: index, follow --- # CVE-2019-14492 Publication date 1 August 2019 Last updated 25 August 2025 --- Ubuntu priority **Medium** [Why this priority?](https://ubuntu.com/security/cves/about#priority ) ## Cvss 3 Severity Score **7.5 · High** [Score breakdown](https://ubuntu.com/security/CVE-2019-14492?format=md#impact-score) Toggle side navigation ## Description 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](https://ubuntu.com/security/CVE-2019-14492?format=md#notes) ## Status Show unmaintained releases | 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 | Fixed 3.2.0+dfsg-4ubuntu0.1+esm2 Ubuntu Pro | | 16.04 LTS xenial | Ignored end of standard support, was needed | | 14.04 LTS trusty | Ignored end of standard support | --- * [How can I get the fixes?](https://ubuntu.com/security/cves/about#security) * [What do statuses mean?](https://ubuntu.com/security/cves/about#statuses) * [Patch details](https://ubuntu.com/security/CVE-2019-14492?format=md#patch-details) ### Get expanded security coverage with Ubuntu Pro Reduce your average CVE exposure time from 98 days to 1 day with expanded CVE patching, ten-years security maintenance and optional support for the full stack of open-source applications. Free for personal use. [Get Ubuntu Pro](https://ubuntu.com/pro) [30-day free trial](https://ubuntu.com/pro/free-trial) ## Notes --- ### [ccdm94](https://launchpad.net/~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?](https://ubuntu.com/security/cves/about#security) | Package | Patch details | | --- | --- | | opencv | * Upstream: [321c74c](https://github.com/opencv/opencv/commit/321c74ccd6077bdea1d47450ca4fe955cb5b6330) | ## Severity score breakdown CVSS version: CVSS v3.0 **Base score** 7.5 · High * Base metrics | Parameter | Value | | --- | --- | | Attack vector | Network | | Attack complexity | Low | | Privileges required | None | | User interaction | None | | Scope | Unchanged | | Confidentiality impact | None | | Integrity impact | None | | Availability impact | High | * Scores | Parameter | Value | | --- | --- | | Base score | 7.5 · High | | Exploitability score | - | | Impact score | - | **Vector:** CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H ## References * [MITRE](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-14492) * [NVD](https://nvd.nist.gov/vuln/detail/CVE-2019-14492) * [Launchpad](https://launchpad.net/bugs/cve/CVE-2019-14492) * [Debian](https://security-tracker.debian.org/tracker/CVE-2019-14492) ### Related Ubuntu Security Notices (USN) + [USN-4818-1](https://usn.ubuntu.com/USN-4818-1) + OpenCV vulnerabilities + 28 September 2022 ### Other references * * * *