CVE-2020-7070

Name	CVE-2020-7070
Description	In PHP versions 7.2.x below 7.2.34, 7.3.x below 7.3.23 and 7.4.x below 7.4.11, when PHP is processing incoming HTTP cookie values, the cookie names are url-decoded. This may lead to cookies with prefixes like __Host confused with cookies that decode to such prefix, thus leading to an attacker being able to forge cookie which is supposed to be secure. See also CVE-2020-8184 for more information.
Source	CVE (at NVD; CERT, LWN, oss-sec, fulldisc, bugtraq, EDB, Metasploit, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, Mageia, GitHub code/issues, web search, more)
References	DLA-2397-1, DSA-4856-1
NVD severity	medium

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
php7.0 (PTS)	stretch	7.0.33-0+deb9u8	vulnerable
	stretch (security)	7.0.33-0+deb9u12	fixed
php7.3 (PTS)	buster	7.3.29-1~deb10u1	fixed
	buster (security)	7.3.31-1~deb10u1	fixed
php7.4 (PTS)	bullseye (security)	7.4.25-1+deb11u1	fixed
	bookworm, sid, bullseye	7.4.21-1+deb11u1	fixed

The information below is based on the following data on fixed versions.

Package	Type	Release	Fixed Version	Origin
php7.0	source	stretch	7.0.33-0+deb9u10	DLA-2397-1
php7.0	source	(unstable)	(unfixed)
php7.3	source	buster	7.3.27-1~deb10u1	DSA-4856-1
php7.3	source	(unstable)	(unfixed)
php7.4	source	(unstable)	7.4.11-1

Notes

Fixed in PHP 7.4.11, 7.3.23, 7.2.34
PHP Bug: https://bugs.php.net/79699
https://git.php.net/?p=php-src.git;a=commit;h=6559fe912661ca5ce5f0eeeb591d928451428ed0