CVE-2020-7066 - CVE House
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Status published Medium CVE-2020-7066

get_headers() silently truncates after a null byte

Vulnerability 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.

Impact Analysis

Refer to official advisory for detailed impact metrics.

Remediation

Ensure systems are updated to the latest vendor-supplied patch levels.

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Credits & Attribution

The following person or organization is credited with identifying this vulnerability, as recorded in the NVD database:

  • 64796c6e69 at gmail dot com

References

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Affected Vendor

Affected Software

PHP
Vulnerable Versions:
7.2.x below 7.2.29, 7.3.x below 7.3.16, 7.4.x below 7.4.4

Timeline

Official Publish: April 1st, 2020
Last Modified: September 17th, 2024
Added to House: July 21st, 2026

CVSS Vectors

V3: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

Weaknesses (CWE)

CWE-170

MITRE ATT&CK TTPs

No associated TTPs found for this vulnerability.