CVE-2017-16654

Name	CVE-2017-16654
Description	An issue was discovered in Symfony before 2.7.38, 2.8.31, 3.2.14, 3.3.13, 3.4-BETA5, and 4.0-BETA5. The Intl component includes various bundle readers that are used to read resource bundles from the local filesystem. The read() methods of these classes use a path and a locale to determine the language bundle to retrieve. The locale argument value is commonly retrieved from untrusted user input (like a URL parameter). An attacker can use this argument to navigate to arbitrary directories via the dot-dot-slash attack, aka Directory Traversal.
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-1707-1, 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	2.3.21+dfsg-4+deb8u3	vulnerable
	jessie (security)	2.3.21+dfsg-4+deb8u5	fixed
	stretch (security), stretch	2.8.7+dfsg-1.3+deb9u2	fixed
	bullseye, buster	3.4.22+dfsg-2	fixed
	sid	4.3.5+dfsg-1	fixed

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

Package	Type	Release	Fixed Version	Urgency	Origin
symfony	source	(unstable)	3.4.0+dfsg-1	medium
symfony	source	jessie	2.3.21+dfsg-4+deb8u4	medium	DLA-1707-1
symfony	source	stretch	2.8.7+dfsg-1.3+deb9u1	medium	DSA-4262-1

https://symfony.com/blog/cve-2017-16654-intl-bundle-readers-breaking-out-of-paths
https://github.com/symfony/symfony/pull/24994