Severity
5.4
Medium severity
Details
- CVSS score
- 5.4
- CVSS vector
- CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:L/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Overview
About vulnerability
nghttp2’s nghttpx proxy through 1.69.0 forwards an HTTP/1.1 Upgrade request that also carries a Content-Length header and body onto reusable keep-alive backend connections, re-adding the Upgrade and Connection headers while passing Content-Length verbatim. A backend that resolves the resulting ambiguous message in the attacker’s favor enables HTTP request/response smuggling and cross-client response-queue poisoning.Details
- Affected product:
- AlmaLinux 9.2 ESU , Debian 10 ELS , TuxCare 9.6 ESU , Ubuntu 18.04 ELS
- Affected packages:
- nghttp2 @ 1.43.0 (+3 more)