------------------------------------------------------------------------- Debian LTS Advisory DLA-3023-1 debian-lts@lists.debian.org https://www.debian.org/lts/security/ Markus Koschany May 26, 2022 https://wiki.debian.org/LTS ------------------------------------------------------------------------- Package : puma Version : 3.6.0-1+deb9u2 CVE ID : CVE-2019-16770 CVE-2020-5247 CVE-2022-23634 Debian Bug : 946312 952766 1005391 Several security vulnerabilities have been discovered in puma, a web server for Ruby/Rack applications. These flaws may lead to information leakage due to not always closing response bodies, allowing untrusted input in a response header (HTTP Response Splitting) and thus potentially facilitating several other attacks like cross-site scripting. A poorly-behaved client could also use keepalive requests to monopolize Puma's reactor and create a denial of service attack. For Debian 9 stretch, these problems have been fixed in version 3.6.0-1+deb9u2. We recommend that you upgrade your puma packages. For the detailed security status of puma please refer to its security tracker page at: https://security-tracker.debian.org/tracker/puma Further information about Debian LTS security advisories, how to apply these updates to your system and frequently asked questions can be found at: https://wiki.debian.org/LTS
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