CVE-2020-7066
get_headers() silently truncates after a null byte
4.3
MEDIUM
CVSS 3.1
EPSS 2.2%
Description
In PHP versions 7.2.x below 7.2.29, 7.3.x below 7.3.16 and 7.4.x below 7.4.4, while using get_headers() with user-supplied URL, if the URL contains zero (\0) character, the URL will be silently truncated at it. This may cause some software to make incorrect assumptions about the target of the get_headers() and possibly send some information to a wrong server.
How to fix CVE-2020-7066
To remediate CVE-2020-7066, upgrade the affected package to a fixed version below.
- —upgrade to 7.2.29 or later
- —upgrade to 7.2.29 or later
- —upgrade to 7.2.29 or later
- —upgrade to 7.4.5-1 or later
Is CVE-2020-7066 being exploited?
Low — EPSS is 2.2%, meaning exploitation activity has not been observed at scale.
Affected packages (4)
- >= 7.2.0, < 7.2.29, >= 7.3.0, < 7.3.16, >= 7.4.0, < 7.4.4
- >= 7.2.0, < 7.2.29, >= 7.3.0, < 7.3.16, >= 7.4.0, < 7.4.4
- >= 7.2.0, < 7.2.29, >= 7.3.0, < 7.3.16, >= 7.4.0, < 7.4.4
- from 0, < 7.4.5-1
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | MEDIUM4.3 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N |