CVE-2013-4136 insecure temporary directory usage in passenger
Local attackers can escalate privileges or modify directory ownership via symlink attacks in Phusion Passenger.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2013-4136?
CVE-2013-4136 is a medium-severity path traversal vulnerability in n/a, published on 30 Sep 2013. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
ext/common/ServerInstanceDir.h in Phusion Passenger gem before 4.0.6 for Ruby allows local users to gain privileges or possibly change the ownership of arbitrary directories via a symlink attack on a directory with a predictable name in /tmp/.
Weakness: CWE-59
Which versions are affected by CVE-2013-4136?
2 open source packages ship an affected version, including passenger. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
passenger RubyGems | All versions | 4.0.6 |
passenger RubyGems | All versions | 4.0.6 |
Products include Phusion Passenger.
How do I fix CVE-2013-4136?
Upgrade passenger to 4.0.6 or later.
Upgrade, and resolve every user-supplied path against an allowed base folder before opening it. More about Path traversal.
Is CVE-2013-4136 being exploited?
There is no known exploitation of CVE-2013-4136 in the wild and no public exploit code.
Other vulnerabilities in n/a
- CVE-2018-12026 Phusion Passenger SpawningKit Contains Arbitrary Read/Write Vulnerability
- CVE-2018-12027 Insecure Permissions in Phusion Passenger
- CVE-2018-12028 Incorrect Access Control in Phusion Passenger
- CVE-2016-10345 Phusion Passenger uses a known /tmp filename
- CVE-2012-6135 RubyGems passenger gem allows remote attackers to delete files
Sources
Also known as DEBIAN-CVE-2013-4136, GHSA-w6rc-q387-vpgq, MGASA-2013-0253.