CVE-2020-7062
Null Pointer Dereference in PHP Session Upload Progress
7.5
HIGH
CVSS 3.1
EPSS 3.5%
Description
In PHP versions 7.2.x below 7.2.28, 7.3.x below 7.3.15 and 7.4.x below 7.4.3, when using file upload functionality, if upload progress tracking is enabled, but session.upload_progress.cleanup is set to 0 (disabled), and the file upload fails, the upload procedure would try to clean up data that does not exist and encounter null pointer dereference, which would likely lead to a crash.
How to fix CVE-2020-7062
To remediate CVE-2020-7062, upgrade the affected package to a fixed version below.
- —upgrade to 7.2.28 or later
- —upgrade to 7.2.28 or later
- —upgrade to 7.2.28 or later
- —upgrade to 5.6.40+dfsg-0+deb8u10 or later
- —upgrade to 7.4.3-1 or later
Is CVE-2020-7062 being exploited?
Low — EPSS is 3.5%, meaning exploitation activity has not been observed at scale.
Affected packages (5)
- >= 7.2.0, < 7.2.28, >= 7.3.0, < 7.3.15, >= 7.4.0, < 7.4.3
- >= 7.2.0, < 7.2.28, >= 7.3.0, < 7.3.15, >= 7.4.0, < 7.4.3
- >= 7.2.0, < 7.2.28, >= 7.3.0, < 7.3.15, >= 7.4.0, < 7.4.3
- from 0, < 5.6.40+dfsg-0+deb8u10
- from 0, < 7.4.3-1
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | HIGH7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |