Vulnerability Details : CVE-2017-16763
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.
Exploit prediction scoring system (EPSS) score for CVE-2017-16763
Probability of exploitation activity in the next 30 days: 2.22%
Percentile, the proportion of vulnerabilities that are scored at or less: ~ 88 % EPSS Score History EPSS FAQ
CVSS scores for CVE-2017-16763
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source |
|---|---|---|---|---|---|
|
7.5
|
HIGH | AV:N/AC:L/Au:N/C:P/I:P/A:P |
10.0
|
6.4
|
NIST |
|
9.8
|
CRITICAL | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
3.9
|
5.9
|
NIST |
References for CVE-2017-16763
-
https://github.com/bbengfort/confire/issues/24
load() method in class Configuration is vulnerable · Issue #24 · bbengfort/confire · GitHubExploit;Third Party Advisory
-
https://github.com/bbengfort/confire/commit/8cc86a5ec2327e070f1d576d61bbaadf861597ea
use safe load instead of load · bbengfort/confire@8cc86a5 · GitHubPatch;Third Party Advisory
-
https://joel-malwarebenchmark.github.io/blog/2017/11/12/cve-2017-16763-configure-loaded-through-confire/
cve-2017-16763: configure loaded through Confire - JoelExploit;Third Party Advisory
Products affected by CVE-2017-16763
- cpe:2.3:a:confire_project:confire:0.2.0:*:*:*:*:*:*:*