CVE-2017-16652

Name	CVE-2017-16652
Description	An issue was discovered in Symfony 2.7.x before 2.7.38, 2.8.x before 2.8.31, 3.2.x before 3.2.14, and 3.3.x before 3.3.13. DefaultAuthenticationSuccessHandler or DefaultAuthenticationFailureHandler takes the content of the _target_path parameter and generates a redirect response, but no check is performed on the path, which could be an absolute URL to an external domain. This Open redirect vulnerability can be exploited for example to mount effective phishing attacks.
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	DSA-4262-1
NVD severity	medium (attack range: remote)

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
symfony (PTS)	jessie (security), jessie	2.3.21+dfsg-4+deb8u3	vulnerable
	stretch	2.8.7+dfsg-1.3	vulnerable
	stretch (security)	2.8.7+dfsg-1.3+deb9u1	fixed
	buster, sid	3.4.15+dfsg-2	fixed

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

Package	Type	Release	Fixed Version	Urgency	Origin	Debian Bugs
symfony	source	(unstable)	3.4.0+dfsg-1	medium
symfony	source	stretch	2.8.7+dfsg-1.3+deb9u1	medium	DSA-4262-1

Notes

https://symfony.com/blog/cve-2017-16652-open-redirect-vulnerability-on-security-handlers
https://github.com/symfony/symfony/pull/24995
See CVE-2018-11408 to address original incomplete fix for CVE-2017-16652