CVE-2019-19624 Out-of-bounds Read in OpenCV

What is CVE-2019-19624?

CVE-2019-19624 is a medium-severity memory corruption vulnerability in Redhat Enterprise Linux, published on 6 Dec 2019. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

An out-of-bounds read was discovered in OpenCV before 4.1.1. Specifically, variable coarsest_scale is assumed to be greater than or equal to finest_scale within the calc()/ocl_calc() functions in dis_flow.cpp. However, this is not true when dealing with small images, leading to an out-of-bounds read of the heap-allocated arrays Ux and Uy.

Weakness: CWE-125

Which versions are affected by CVE-2019-19624?

12 open source packages ship an affected version, including opencv-contrib-python, opencv-contrib-python-headless and opencv-python. It affects 2 products.

Products include Opencv Opencv, Redhat Enterprise Linux.

How do I fix CVE-2019-19624?

Upgrade opencv-contrib-python to 4.1.0.25 or later.

Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.

Is CVE-2019-19624 being exploited?

There is no known exploitation of CVE-2019-19624 in the wild and no public exploit code.

Other vulnerabilities in Redhat Enterprise Linux

• CVE-2019-5063 Out-of-bounds Write in OpenCV High 8.8
• CVE-2019-5064 Out-of-bounds Write in OpenCV High 8.8
• CVE-2019-14491 Out-of-bounds Read in OpenCV High 8.2
• CVE-2019-14492 Out-of-bounds Read and Out-of-bounds Write in OpenCV High 7.5
• CVE-2018-7712 Denial of service in n/a High 7.5

All Redhat Enterprise Linux vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as DEBIAN-CVE-2019-19624, GHSA-jggw-2q6g-c3m6, PYSEC-2026-2800, PYSEC-2026-2824, PYSEC-2026-2839, PYSEC-2026-723 and 1 more.