https://bz.apache.org/bugzilla/show_bug.cgi?id=65025

            Bug ID: 65025
           Summary: SSL error "ca key too small" is reported at info level
                    instead of error level
           Product: Apache httpd-2
           Version: 2.4.38
          Hardware: PC
                OS: Linux
            Status: NEW
          Severity: normal
          Priority: P2
         Component: mod_ssl
          Assignee: [email protected]
          Reporter: [email protected]
  Target Milestone: ---

A problem with a CA chain is being reported at ssl:info level, which is
normally suppressed, resulting in no logging whatsoever for CA-cert-related
connection issues.

For example, a 1024-bit CA-cert is blocked by OpenSSL SECLEVEL=2.

There is currently NO logging about it on the server side.

On the client it manifests itself as "ssl3_read_bytes:tlsv1 alert internal
error:ssl/record/rec_layer_s3.c:1399:SSL alert number 80", so not really
helpful.

The actual error, ssl_add_cert_chain:ca key too small, is visible in the server
log only after bumping LogLevel to debug:

[Tue Dec 22 16:09:14.686357 2020] [ssl:info] [pid 12257:tid 139992554424064]
[client ::1:58060] AH02008: SSL library error 1 in handshake (server
localhost:443)
[Tue Dec 22 16:09:14.686391 2020] [ssl:info] [pid 12257:tid 139992554424064]
SSL Library Error: error:1413C18D:SSL routines:ssl_add_cert_chain:ca key too
small
[Tue Dec 22 16:09:14.686414 2020] [ssl:info] [pid 12257:tid 139992554424064]
[client ::1:58060] AH01998: Connection closed to child 0 with abortive shutdown
(server localhost:443)

Thus hereby a request to change ssl_add_cert_chain error reporting to error
level.

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