Vulnerability in Ruby-lang Ruby
CVE-2017-17790
The lazy_initialize function in lib/resolv.rb in Ruby through 2.4.3 uses Kernel#open, which might allow Command Injection attacks, as demonstrated by a Resolv::Hosts::new argument beginning with a '|' character, a different vulnerability t…
EPSS: 0.047 (89.5th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
Affected products
- Ruby-lang Ruby — versions 2.5.0
- N/a — versions n/a
Weakness classification (CWE)
Public proof-of-concept exploits
References
- cve@mitre.org (x_refsource_REDHAT, vendor-advisory)
- cve@mitre.org (mailing-list, x_refsource_MLIST)
- cve@mitre.org (x_refsource_REDHAT, vendor-advisory)
- cve@mitre.org (x_refsource_CONFIRM, Exploit, Third Party Advisory, Issue Tracking)
- cve@mitre.org (x_refsource_REDHAT, vendor-advisory)
- cve@mitre.org (mailing-list, x_refsource_MLIST)
- cve@mitre.org (x_refsource_REDHAT, vendor-advisory)
- cve@mitre.org (mailing-list, x_refsource_MLIST)
- cve@mitre.org (vendor-advisory, x_refsource_DEBIAN)
Frequently asked questions
- What is CVE-2017-17790?
- CVE-2017-17790 is a critical-severity vulnerability in Ruby-lang Ruby, classified under Improper Neutralization of Special Elements in Output Used by a Downstream Component (Injection). CVSS score: 9.8/10. Published 2017-12-20.
- How severe is CVE-2017-17790?
- Critical severity. CVSS v3 base score is 9.8 out of 10.
- Is CVE-2017-17790 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.