CVE-2020-7066

Published: 1 April 2020

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.

Notes

PEAR issues should go against php-pear as of xenial

php5 in precise is 5.3 and does not support the Zend API
needed to fix this issue. Since backport this is to
intrusive, marking it as ignored for precise/esm.

Priority

Medium

CVSS 3 base score: 4.3

Status

References

• https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-7066
• http://git.php.net/?p=php-src.git;a=commit;h=a33d05b1474caee449b88f53d61bee720c57caf7
• https://ubuntu.com/security/notices/USN-4330-1
• https://ubuntu.com/security/notices/USN-4330-2
• NVD
• Launchpad
• Debian

Bugs

• https://bugs.php.net/bug.php?id=79329