CVE-2017-10784

Name: CVE-2017-10784
Creator: NVD / NIST
Published: 2017-09-19T17:29:00.263+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

UnknownEPSS 16.41%

Last modified Jun 17, 2026

CVE-2017-10784 is a vulnerability of currently unknown severity. 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.. EPSS estimates a 16.41% chance of exploitation in the next 30 days.

Description

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.

Metrics

EPSS Probability

16.41%

96.6th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-287

Affected Software

Vendor	Product	Versions
Ruby-Lang	Ruby	<= 2.2.7
Ruby-Lang	Ruby	2.3.0
Ruby-Lang	Ruby	2.3.1
Ruby-Lang	Ruby	2.3.2
Ruby-Lang	Ruby	2.3.3
Ruby-Lang	Ruby	2.3.4
Ruby-Lang	Ruby	2.4.0
Ruby-Lang	Ruby	2.4.1

References

http://www.securityfocus.com/bid/100853Third Party Advisory, VDB Entry
http://www.securitytracker.com/id/1039363Third Party Advisory, VDB Entry
http://www.securitytracker.com/id/1042004
https://access.redhat.com/errata/RHSA-2017:3485
https://access.redhat.com/errata/RHSA-2018:0378
https://access.redhat.com/errata/RHSA-2018:0583
https://access.redhat.com/errata/RHSA-2018:0585
https://lists.debian.org/debian-lts-announce/2018/07/msg00012.html
https://security.gentoo.org/glsa/201710-18
https://usn.ubuntu.com/3528-1/
https://usn.ubuntu.com/3685-1/
https://www.debian.org/security/2017/dsa-4031
https://www.ruby-lang.org/en/news/2017/09/14/ruby-2-2-8-released/Patch, Vendor Advisory
https://www.ruby-lang.org/en/news/2017/09/14/ruby-2-3-5-released/Patch, Vendor Advisory
https://www.ruby-lang.org/en/news/2017/09/14/webrick-basic-auth-escape-sequence-injection-cve-2017-10784/Vendor Advisory
http://www.securityfocus.com/bid/100853Third Party Advisory, VDB Entry
http://www.securitytracker.com/id/1039363Third Party Advisory, VDB Entry
http://www.securitytracker.com/id/1042004
https://access.redhat.com/errata/RHSA-2017:3485
https://access.redhat.com/errata/RHSA-2018:0378
https://access.redhat.com/errata/RHSA-2018:0583
https://access.redhat.com/errata/RHSA-2018:0585
https://lists.debian.org/debian-lts-announce/2018/07/msg00012.html
https://security.gentoo.org/glsa/201710-18
https://usn.ubuntu.com/3528-1/
https://usn.ubuntu.com/3685-1/
https://www.debian.org/security/2017/dsa-4031
https://www.ruby-lang.org/en/news/2017/09/14/ruby-2-2-8-released/Patch, Vendor Advisory
https://www.ruby-lang.org/en/news/2017/09/14/ruby-2-3-5-released/Patch, Vendor Advisory
https://www.ruby-lang.org/en/news/2017/09/14/webrick-basic-auth-escape-sequence-injection-cve-2017-10784/Vendor Advisory

Timeline

Published: Sep 19, 2017
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2017-10784?

How severe is CVE-2017-10784?

Severity scoring for CVE-2017-10784 is pending analysis. The EPSS model estimates a 16.41% probability of exploitation in the next 30 days.

How do I fix CVE-2017-10784?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2017-10784?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST