[BUG] Checksum File Parsing Fails Due to Missing Delimiters in (*TemplateManager).writeChecksumFileInDir

[dwisiswant0]

Is there an existing issue for this?

• I have searched the existing issues.

Current Behavior

When the .checksum file exists in the templates directory, the (*TemplateManager).getChecksumFromDir method fails because the .checksum file lacks delimiters. As a result, the method always returns an empty map.

Expected Behavior

The .checksum file should include the necessary delimiters when written by (*TemplateManager).writeChecksumFileInDir. This would ensure that (*TemplateManager).getChecksumFromDir can properly parse the file and return the correct map of checksums.

Steps To Reproduce

Assume the templates directory is located at /tmp/nuclei-templates, and you are behind a few versions, e.g., v10.0.0 (also modify ~/.config/nuclei/.templates-config.json), while the latest version is v10.1.1.

$ cd /tmp
$ rm -rf nuclei-templates/
$ mkdir nuclei-templates/
$ wget https://github.com/projectdiscovery/nuclei-templates/archive/refs/tags/v10.0.0.zip
$ unzip v10.0.0.zip
$ cp -r ./nuclei-templates-10.0.0/*/* ./nuclei-templates
$ go run cmd/nuclei/main.go -ut

Relevant log output

This will show summary stats indicating that everything is "removed" because it failed to read the checksums.

Environment

- OS: Ubuntu 22.04 LTS
- Nuclei: v3.3.8
- Go:

Anything else?

No response