Auth bypass in Ruby-Lang Ruby
CVE-2017-10784
The Basic authentication code in WEBrick library in Ruby before 2.2.8, 2.3.x before 2.3.5, and 2.4.x through 2.4.1 allows remote attackers to inject terminal emulator escape sequences into its log and possibly execute arbitrary commands via a crafted user name.
Vulnerability class: Broken Authentication
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.8 (High). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.164 (97.0th percentile), scored .
Moderate probability of exploitation in the next 30 days — watch for active exploitation reports. 97th percentile — 97.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.164 · newest: 0.164 · change: 0.000
Affected products
- Ruby-Lang Ruby — versions 2.3.0, 2.3.1, 2.3.2
Weakness classification (CWE)
Public proof-of-concept exploits
References
- usn.ubuntu.com/3685-1/ (vendor-advisory)
- access.redhat.com/errata/RHSA-2018:0585 (vendor-advisory)
- usn.ubuntu.com/3528-1/ (vendor-advisory)
- www.securityfocus.com/bid/100853 (VDB Entry, Third Party Advisory, vdb-entry)
- www.ruby-lang.org/en/news/2017/09/14/ruby-2-3-5-released/ (Patch, Vendor Advisory)
- access.redhat.com/errata/RHSA-2018:0378 (vendor-advisory)
- www.securitytracker.com/id/1042004 (vdb-entry)
- www.debian.org/security/2017/dsa-4031 (vendor-advisory)
- www.ruby-lang.org/en/news/2017/09/14/ruby-2-2-8-released/ (Patch, Vendor Advisory)
- www.securitytracker.com/id/1039363 (VDB Entry, Third Party Advisory, vdb-entry)
Frequently asked questions
- What is CVE-2017-10784?
- CVE-2017-10784 is a high-severity vulnerability in Ruby-Lang Ruby, classified under Improper Authentication. CVSS score: 8.8/10. Published 2017-09-19.
- How severe is CVE-2017-10784?
- High severity. CVSS v3 base score is 8.8 out of 10.
- Is CVE-2017-10784 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.