Path Traversal in Ruby-Lang Webrick
CVE-2019-11879
The WEBrick gem 1.4.2 for Ruby allows directory traversal if the attacker once had local access to create a symlink to a location outside of the web root directory. NOTE: The vendor states that this is analogous to Options FollowSymlinks in the Apache HTTP Server, and therefore it is "not a problem.
Vulnerability class: Path Traversal (Directory Traversal)
EPSS: 0.005 (42.7th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 5.5 (Medium). Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N.
Affected products
- Ruby-lang Webrick — versions 1.4.2
- N/a — versions n/a
Weakness classification (CWE)
Public proof-of-concept exploits
References
- cve@mitre.org (x_refsource_MISC, Issue Tracking, Vendor Advisory)
Frequently asked questions
- What is CVE-2019-11879?
- CVE-2019-11879 is a medium-severity vulnerability in Ruby-Lang Webrick, classified under Path Traversal. CVSS score: 5.5/10. Published 2019-05-10.
- How severe is CVE-2019-11879?
- Medium severity. CVSS v3 base score is 5.5 out of 10.
- Is CVE-2019-11879 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.