Improper Output Neutralization for Logs Affecting ruby4.0-default-gems package, versions <0:4.0.0-33.3.hum1
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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- published21 Apr 2026
- disclosed14 Sept 2017
Introduced: 14 Sep 2017
CVE-2017-10784 (opens in a new tab)How to fix?
Upgrade RHEL:10 ruby4.0-default-gems to version 0:4.0.0-33.3.hum1 or higher.
This issue was patched in RHSA-2026:8838.
NVD Description
Note: Versions mentioned in the description apply only to the upstream ruby4.0-default-gems package and not the ruby4.0-default-gems package as distributed by RHEL.
See How to fix? for RHEL:10 relevant fixed versions and status.
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.
References
- https://bugzilla.redhat.com/show_bug.cgi?id=1492012
- https://access.redhat.com/security/cve/CVE-2017-10784
- https://access.redhat.com/errata/RHSA-2026:7305
- https://access.redhat.com/errata/RHSA-2026:7307
- https://access.redhat.com/errata/RHSA-2026:8838
- http://www.securityfocus.com/bid/100853
- http://www.securitytracker.com/id/1039363
- 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/
- https://www.ruby-lang.org/en/news/2017/09/14/ruby-2-3-5-released/
- https://www.ruby-lang.org/en/news/2017/09/14/webrick-basic-auth-escape-sequence-injection-cve-2017-10784/