CVE-2017-16763 Unsafe deserialization in confire
Attackers can execute arbitrary Python code by inserting malicious payloads into the user-specific YAML configuration file loaded by the Confire library.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2017-16763?
CVE-2017-16763 is a critical code injection vulnerability in n/a, published on 10 Nov 2017. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
An exploitable vulnerability exists in the YAML parsing functionality in config.py in Confire 0.2.0. Due to the user-specific configuration being loaded from "~/.confire.yaml" using the yaml.load function, a YAML parser can execute arbitrary Python commands resulting in command execution. An attacker can insert Python into loaded YAML to trigger this vulnerability.
Which versions are affected by CVE-2017-16763?
3 open source packages ship an affected version, including confire. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
confire PyPI | All versions to 0.2.0 | None |
confire PyPI | All versions to 0.2.0 | None |
confire PyPI | From 0.1.0 | None |
Products include Confire Project Confire.
How do I fix CVE-2017-16763?
No fix has been published for CVE-2017-16763 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-2017-16763 being exploited?
There is no known exploitation of CVE-2017-16763 in the wild and no public exploit code.
Sources
Also known as GHSA-m85c-9mf8-m2m6, PYSEC-2017-78.