Name | CVE-2021-21705 |
Description | In PHP versions 7.3.x below 7.3.29, 7.4.x below 7.4.21 and 8.0.x below 8.0.8, when using URL validation functionality via filter_var() function with FILTER_VALIDATE_URL parameter, an URL with invalid password field can be accepted as valid. This can lead to the code incorrectly parsing the URL and potentially leading to other security implications - like contacting a wrong server or making a wrong access decision. |
Source | CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) |
References | DLA-2708-1, DSA-4935-1 |
Debian Bugs | 990575 |
Vulnerable and fixed packages
The table below lists information on source packages.
Source Package | Release | Version | Status |
---|
php7.3 (PTS) | buster | 7.3.31-1~deb10u1 | fixed |
| buster (security) | 7.3.31-1~deb10u5 | fixed |
php7.4 (PTS) | bullseye (security), bullseye | 7.4.33-1+deb11u4 | fixed |
The information below is based on the following data on fixed versions.
Notes
Fixed in 8.0.8, 7.4.21, 7.3.29
PHP Bug: https://bugs.php.net/81122