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Advisories

Square Squash through commit e73f280 Unauthenticated YAML Deserialization via Symbolication API

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severity
critical
date
Affecting

  • Squash <= e73f2805f9eb30780a5c213b001f0f4255660fbf

CWE
  • CWE-502 Deserialization of Untrusted Data
CVSS
9.2
CVSS V4 Vector
CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
Credit
hieuPenguinnn
Description
Square Squash through commit e73f280 contains an insecure deserialization vulnerability that allows unauthenticated attackers to store crafted YAML via the POST /api/1.0/symbolication endpoint. When occurrences referencing the attacker-controlled symbolication UUID are symbolicated, the stored values are passed to YAML.load with SafeYAML in unsafe mode, enabling arbitrary Ruby object deserialization and potential code execution.

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