Inherit NET_BIND_SERVICE from IC to Nginx (#3722) #3849
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8be0144: Rework port binding logic without privileges caused issues for host networking configurations. The Kubernetes documentation states that the `net.*` sysctls can be used with container networking, which was misinterpreted. This commit reverts the change, bringing back NET_BIND_SERVICE to the Nginx process, as well as reverts the libcap package removal done in a later commit. In order to avoid privilege escalation being re-introduced, the IC process is also receiving NET_BIND_SERVICE, so that it can be inherited over to Nginx. This change aims to restore host networking as functional for the Helm chart. A future change is recommended to harden security for the IC process (to drop the capability after executing Nginx) as well as Nginx itself (to drop the capability after binding). OBS! To use a 3.1.0 image, you should manually install the `setcap` binary and add `+ep` on `/nginx-ingress` and `+eip` on `nginx` binary. (cherry picked from commit 5d56f71)
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@@ Coverage Diff @@
## release-3.1 #3849 +/- ##
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Coverage ? 52.38%
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Files ? 59
Lines ? 16890
Branches ? 0
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Hits ? 8848
Misses ? 7747
Partials ? 295 📣 We’re building smart automated test selection to slash your CI/CD build times. Learn more |
jasonwilliams14
approved these changes
May 4, 2023
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(cherry picked from commit 5d56f71)