Advisories

Cap-go - Job Existence Oracle via Unauthenticated OPTIONS /build/upload/:jobId/*

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severity
medium
date
Affecting
  • capgo >= 0, < 12.128.2

CWE
  • CWE-203 Observable Discrepancy
CVSS
6.9
CVSS V4 Vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N
Credit
Judel777
Description
Cap-go before 12.128.2 contains an information disclosure vulnerability in the OPTIONS /build/upload/:jobId/* endpoint that allows unauthenticated attackers to enumerate valid builder job IDs through observable response discrepancies. Attackers can probe the endpoint without authentication to distinguish valid job IDs from invalid ones and generate sustained unauthenticated traffic for resource consumption.

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