CVE-2017-17742 Other in n/a

What is CVE-2017-17742?

CVE-2017-17742 is a medium-severity vulnerability in Debian Debian Linux, published on 3 Apr 2018. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

Ruby before 2.2.10, 2.3.x before 2.3.7, 2.4.x before 2.4.4, 2.5.x before 2.5.1, and 2.6.0-preview1 allows an HTTP Response Splitting attack. An attacker can inject a crafted key and value into an HTTP response for the HTTP server of WEBrick.

Weakness: CWE-113

Which versions are affected by CVE-2017-17742?

It affects 2 products.

Products include Debian Debian Linux, Ruby-Lang Ruby.

How do I fix CVE-2017-17742?

Upgrade to a fixed version.

Is CVE-2017-17742 being exploited?

There is no known exploitation of CVE-2017-17742 in the wild and no public exploit code.

Other vulnerabilities in Debian Debian Linux

• CVE-2015-3306 ProFTPD Improper Access Control Exploited Critical 10.0
• CVE-2025-49113 RoundCube Webmail Deserialization of Untrusted Data Exploited Critical 9.9
• CVE-2026-24061 GNU InetUtils Argument Injection Exploited Critical 9.8
• CVE-2025-39682 Linux Kernel Improper Check for Unusual or Exceptional Conditions Exploited Critical 9.8
• CVE-2024-9680 Mozilla Firefox Use-After-Free Exploited Critical 9.8

All Debian Debian Linux vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as ALPINE-CVE-2017-17742, CLEANSTART-2026-UN39292, DEBIAN-CVE-2017-17742, GHSA-7p4c-jf2w-hc3w, UBUNTU-CVE-2017-17742.