CVE-2015-3649 open-uri-cached Gem for Ruby Unsafe Temporary File Creation Enables Code Execution
Local attackers can execute arbitrary Ruby code by exploiting a race condition in the open-uri-cached gem's temporary file handling.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2015-3649?
CVE-2015-3649 is a high-severity code injection vulnerability in n/a, published on 18 Aug 2017. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
The open-uri-cached rubygem allows local users to execute arbitrary Ruby code by creating a directory under /tmp containing "openuri-" followed by a crafted UID, and putting Ruby code in said directory once a meta file is created.
Weakness: CWE-20
Which versions are affected by CVE-2015-3649?
2 open source packages ship an affected version, including open-uri-cached. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
open-uri-cached RubyGems | All versions to 1.0.0 | None |
open-uri-cached RubyGems | All versions to 1.0.0 | None |
Products include Open-Uri-Cached Project Open-Uri-Cached.
How do I fix CVE-2015-3649?
No fix has been published for CVE-2015-3649 yet. Limit exposure of the affected software until one is available.
Upgrade, and never evaluate templates, expressions or code built from user input. More about Code injection.
Is CVE-2015-3649 being exploited?
There is no known exploitation of CVE-2015-3649 in the wild and no public exploit code.
Sources
Also known as GHSA-7m2w-9gw7-c3xp.