CVE-2021-39520
6.5
MEDIUM
CVSS 3.1
EPSS 0.24%
Description
An issue was discovered in libjpeg through 2020021. A NULL pointer dereference exists in the function BlockBitmapRequester::PushReconstructedData() located in blockbitmaprequester.cpp. It allows an attacker to cause Denial of Service.
How to fix CVE-2021-39520
To remediate CVE-2021-39520, upgrade the affected package to a fixed version below.
- Debian/libjpeg—upgrade to 0.0~git20200925.f145908-1 or later
Is CVE-2021-39520 being exploited?
Low — EPSS is 0.2%, meaning exploitation activity has not been observed at scale.
Affected packages (1)
- from 0, < 0.0~git20200925.f145908-1
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | MEDIUM6.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H |