SUSP_EXPL_LIBCUE_CVE_2023_43641_Oct23_1

YARA detection rule by Florian Roth · NOASSERTION

Detects a suspicious .cue file that could be an exploitation attempt of libcue vulnerability CVE-2023-43641

rule SUSP_EXPL_LIBCUE_CVE_2023_43641_Oct23_1 {
   meta:
      author = "Florian Roth"
      description = "Detects a suspicious .cue file that could be an exploitation attempt of libcue vulnerability CVE-2023-43641"
      reference = "https://github.com/github/securitylab/blob/main/SecurityExploits/libcue/track_set_index_CVE-2023-43641/README.md"
      date = "2023-10-27"
      score = 70
      id = "34fcf80c-adcd-55c0-9fb4-261d20f61fa6"
   strings:
      $a1 = "TRACK "
      $a2 = "FILE "

      $s1 = "INDEX 4294"
   condition:
      filesize < 100KB and all of them
}

[[ currentRule.title && currentRule.title.length > 60 ? currentRule.title.slice(0, 60) + '…' : currentRule.title ]]

2d55104f-7a77-4183-942c-e4c2cc395ecb

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Executable code, not a declarative rule

This submission is arbitrary [[ currentRule.format ? currentRule.format.toUpperCase() : '' ]] code, not a declarative detection rule — review it as you would any script before running it, and note that it cannot be safely aggregated or auto-executed alongside YARA/Sigma/Suricata/CRS rules.

Rejected pattern present

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Format & documentation suggestions

Not a security issue — this rule is valid and was accepted as-is. These are optional fields/conventions its own format recommends, mainly affecting its quality score and how well it documents itself for other reviewers.

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[[ currentRule.title && currentRule.title.length > 60 ? currentRule.title.slice(0, 60) + '…' : currentRule.title ]]

[[ currentRule.title ]]

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