Rack is a modular Ruby web server interface. Carefully crafted content type headers can cause Rack’s media type parser to take much longer than expected, leading to a possible denial of service vulnerability (ReDos 2nd degree polynomial). This vulnerability is patched in 3.0.9.1 and 2.2.8.1.
2.0.6-32.0.7-22.0.7-2ubuntu0.12.0.7-2ubuntu0.1+esm12.0.7-2ubuntu0.1+esm22.0.7-2ubuntu0.1+esm32.0.7-2ubuntu0.1+esm42.0.7-2ubuntu0.1+esm52.1.4-32.1.4-42.1.4-52.1.4-5ubuntu12.1.4-5ubuntu1.12.1.4-32.1.4-42.1.4-52.1.4-5ubuntu12.1.4-5ubuntu1+esm22.1.4-5ubuntu1+esm32.1.4-5ubuntu1+esm42.1.4-5ubuntu1+esm52.2.7-12.2.7-1.12.2.4-32.2.7-12.2.7-1ubuntu0.12.2.7-1.12.0.6-32.0.7-22.0.7-2ubuntu0.12.0.7-2ubuntu0.1+esm12.0.7-2ubuntu0.1+esm22.0.7-2ubuntu0.1+esm32.0.7-2ubuntu0.1+esm4Exploitability
AV:NAC:LPR:NUI:NScope
S:UImpact
C:NI:NA:HCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H