CVE-2020-21603: Buffer Overflow

Published Sep 16, 2021

Updated

Last updated 24 July 2024

Other sources

libde265 v1.0.4 contains a heap buffer overflow in the putqpel00fallback16 function, which can be exploited via a crafted a file.

Affected Software

2 affected componentsFixes available

struktur libde265=1.0.4

debian/libde265

1.0.11-1+deb12u21.0.11-1+deb12u31.0.15-1+deb13u21.1.3-1

Remediation

Recommended actions to resolve this vulnerability, in priority order.

Upgrade
Upgrade debian/libde265 to a version that resolves this vulnerability.
Fixed in 1.0.11-1+deb12u2Fixed in 1.0.11-1+deb12u3Fixed in 1.0.15-1+deb13u2Fixed in 1.1.3-1

Event History

Sep 16, 2021

CVE Published

via MITRE·12:00 AM

Data Sourced

via MITRE·12:00 AM

Description

Data Sourced

via NVD·10:15 PM

DescriptionSeverityWeaknessAffected Software

Parent advisories

This vulnerability appears in the following advisories.

DSA-5346

Peer vulnerabilities

Found alongside the following vulnerabilities.

DLA-3240-1

Frequently Asked Questions

What is the severity of CVE-2020-21603?

CVE-2020-21603 is considered a critical vulnerability due to the presence of a heap buffer overflow that can lead to remote code execution.

How do I fix CVE-2020-21603?

To mitigate CVE-2020-21603, update the libde265 package to versions 1.0.11-0+deb11u3, 1.0.11-0+deb11u1, 1.0.11-1+deb12u2, or 1.0.15-1.

Which versions of libde265 are affected by CVE-2020-21603?

CVE-2020-21603 affects libde265 version 1.0.4 and earlier versions.

What is the nature of the vulnerability in CVE-2020-21603?

CVE-2020-21603 is characterized by a heap buffer overflow in the put_qpel_0_0_fallback_16 function.

Can I exploit CVE-2020-21603 through file manipulation?

Yes, CVE-2020-21603 can be exploited via a crafted file that triggers the underlying vulnerability.