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Gosec int overflow #36

Merged
merged 5 commits into from
Dec 13, 2024
Merged

Gosec int overflow #36

merged 5 commits into from
Dec 13, 2024

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eest
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@eest eest commented Dec 13, 2024 •
edited by coderabbitai bot
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Summary by CodeRabbit

  • Documentation

    • Added a security note regarding the handling of specific fields in the DNS struct.
    • Enhanced comments for clarity on operations and handling of potential overflows.

  • Refactor

    • Renamed DTMStatusBits to EDMStatusBits in the histogramData structure for consistency.
    • Adjusted logic to align with the new field name while maintaining overall structure and flow.

eest added 5 commits December 13, 2024 11:15
@eest
Add comment for potential integer overflow
155c427 
While here fix some remaining dtm->edm renaming
@eest
Fix another gosec complaint about integer overflow
697d5e9 
While here standardize on UTC time rather than local time.
@eest
Silence gosec errors for possible integer overflow
1d2d509 
All of these are a result of how the parquet library deals with uint
values: the struct field will be a signed integer but a struct tag
tells it how to actually interpret the contents.
@eest
Use correct viper function to get uint16
65bb884 
Fixes gosec complaint about possible integer overflow.
@eest
Silence another gosec integer overflow warning
7707bae
@eest eest requested a review from a team as a code owner December 13, 2024 11:54
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coderabbitai bot commented Dec 13, 2024 •
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Walkthrough

The changes in this pull request involve two main files. In pkg/protocols/protocols.go, a comment was added to the bitsFromMsg function to clarify the handling of the Opcode and Rcode fields in the dns struct. In pkg/runner/runner.go, the DTMStatusBits field in the histogramData struct was renamed to EDMStatusBits, with corresponding updates in the logic and comments throughout the file. Additional minor adjustments were made to comments regarding port handling in the newSession function.

Changes

File Path Change Summary
pkg/protocols/protocols.go Added a comment to bitsFromMsg regarding Opcode and Rcode fields in the dns struct.
pkg/runner/runner.go Renamed DTMStatusBits to EDMStatusBits in histogramData struct; updated logic and comments accordingly. Minor adjustments to comments in newSession.

Poem

In code we hop and play,
With bits and fields, we say,
"Rename and clarify,
Let no confusion lie!"
A comment here, a change so bright,
Our code now shines with clearer light! 🐇✨

📜 Recent review details

Configuration used: CodeRabbit UI
Review profile: CHILL
Plan: Pro

📥 Commits

Reviewing files that changed from the base of the PR and between a885dc8 and 7707bae.

📒 Files selected for processing (2)
  • pkg/protocols/protocols.go (1 hunks)
  • pkg/runner/runner.go (9 hunks)
✅ Files skipped from review due to trivial changes (1)
  • pkg/protocols/protocols.go
🔇 Additional comments (7)
pkg/runner/runner.go (7)

121-121: LGTM: Field rename from DTMStatusBits to EDMStatusBits

The field rename is consistent with the PR objectives and maintains the same type and parquet schema attributes.

1634-1639: LGTM: Safe port number handling with clear security comments

The added security comments clarify that the port number conversions are safe because:

  • QueryPort and ResponsePort are defined as 16-bit numbers
  • The parquet fields use INT32 with convertedtype=UINT_16

Line range hint 1671-1681: LGTM: Safe IPv4 address handling with clear security comments

The added security comments clarify that the IPv4 address conversions are safe because the parquet fields use INT32 with convertedtype=UINT_32.

1691-1692: LGTM: Safe IPv6 address handling with clear security comments

The added security comments clarify that the IPv6 address conversions are safe because the parquet fields use INT64 with convertedtype=UINT_64.

Also applies to: 1703-1704

1931-1931: LGTM: Safe Unix timestamp handling with clear security comments

The added security comments clarify that timestamp conversions are safe because:

  • Overflow would only result in interesting timestamps without security impact
  • time.Unix() expects int64 parameters

Also applies to: 1938-1938

2333-2339: LGTM: Safe EDMStatusBits handling with clear security comments

The added security comment clarifies that the status bits conversion is safe because:

  • The parquet field uses convertedtype=UINT_64
  • Any overflow in uint64 -> int64 conversion is acceptable for this field

Line range hint 121-2339: Overall: Well-documented security improvements for integer handling

The changes consistently improve the code by:

  1. Adding clear security comments for all integer conversions
  2. Properly justifying the use of #nosec G115 annotations
  3. Documenting the safety of conversions between different integer types
  4. Maintaining compatibility with parquet schema definitions

The changes are focused on improving code clarity and security documentation without modifying the underlying logic.

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@eest eest merged commit 637dbad into main Dec 13, 2024
2 checks passed
@eest eest deleted the gosec-int-overflow branch December 13, 2024 12:00
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