File

.semgrep.yml @ 13289:38c95544b7ee

mod_saslauth, mod_c2s: Disable tls-server-end-point channel binding by default This channel binding method is now enabled when a hash is manually set in the config, or it attempts to discover the hash automatically if the value is the special string "auto". A related change to mod_c2s prevents complicated certificate lookups in the client connection hot path - this work now happens only when this channel binding method is used. I'm not aware of anything else that uses ssl_cfg (vs ssl_ctx). Rationale for disabling by default: - Minor performance impact in automatic cert detection - This method is weak against a leaked/stolen private key (other methods such as 'tls-exporter' would not be compromised in such a case) Rationale for keeping the implementation: - For some deployments, this may be the only method available (e.g. due to TLS offloading in another process/server).
author Matthew Wild <mwild1@gmail.com>
date Thu, 26 Oct 2023 15:14:39 +0100
parent 12717:898e99f49d80
child 13700:9b7687b47da9
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rules:
- id: log-variable-fmtstring
  patterns:
    - pattern: log("...", $A)
    - pattern-not: log("...", "...")
  message: Variable passed as format string to logging
  languages: [lua]
  severity: ERROR
- id: module-log-variable-fmtstring
  patterns:
    - pattern: module:log("...", $A)
    - pattern-not: module:log("...", "...")
  message: Variable passed as format string to logging
  languages: [lua]
  severity: ERROR
- id: module-getopt-string-default
  patterns:
    - pattern: module:get_option_string("...", $A)
    - pattern-not: module:get_option_string("...", "...")
    - pattern-not: module:get_option_string("...", host)
    - pattern-not: module:get_option_string("...", module.host)
  message: Non-string default from :get_option_string
  severity: ERROR
  languages: [lua]
- id: stanza-empty-text-constructor
  patterns:
    - pattern: $A:text()
  message: Use :get_text() to read text, or pass a value here to add text
  severity: WARNING
  languages: [lua]