| 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, ELA-457-1 |
| Debian Bugs | 990575 |
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|---|---|---|
| php5 (PTS) | jessie, jessie (lts) | 5.6.40+dfsg-0+deb8u21 | fixed |
| php7.0 (PTS) | stretch (security) | 7.0.33-0+deb9u12 | fixed |
| stretch (lts), stretch | 7.0.33-0+deb9u19 | fixed | |
| php7.3 (PTS) | buster, buster (lts) | 7.3.31-1~deb10u8 | fixed |
| buster (security) | 7.3.31-1~deb10u7 | fixed | |
| php7.4 (PTS) | bullseye | 7.4.33-1+deb11u5 | fixed |
| bullseye (security) | 7.4.33-1+deb11u6 | fixed |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|---|---|---|---|---|---|
| php5 | source | jessie | 5.6.40+dfsg-0+deb8u14 | ELA-457-1 | ||
| php7.0 | source | stretch | 7.0.33-0+deb9u11 | DLA-2708-1 | ||
| php7.0 | source | (unstable) | (unfixed) | |||
| php7.3 | source | buster | 7.3.29-1~deb10u1 | DSA-4935-1 | ||
| php7.3 | source | (unstable) | (unfixed) | |||
| php7.4 | source | (unstable) | 7.4.21-1+deb11u1 | |||
| php8.0 | source | (unstable) | 8.0.8-1 | 990575 |
Fixed in 8.0.8, 7.4.21, 7.3.29
PHP Bug: https://bugs.php.net/81122