id: GO-2022-0526
modules:
    - module: std
      versions:
        - fixed: 1.17.12
        - introduced: 1.18.0-0
          fixed: 1.18.4
      vulnerable_at: 1.18.3
      packages:
        - package: encoding/gob
          symbols:
            - Decoder.decIgnoreOpFor
            - Decoder.compileIgnoreSingle
            - Decoder.compileDec
summary: Stack exhaustion when decoding certain messages in encoding/gob
description: |-
    Calling Decoder.Decode on a message which contains deeply nested structures can
    cause a panic due to stack exhaustion.
published: 2022-07-20T20:52:17Z
references:
    - fix: https://go.dev/cl/417064
    - fix: https://go.googlesource.com/go/+/6fa37e98ea4382bf881428ee0c150ce591500eb7
    - report: https://go.dev/issue/53615
    - web: https://groups.google.com/g/golang-announce/c/nqrv9fbR0zE
cve_metadata:
    id: CVE-2022-30635
    cwe: 'CWE-674: Uncontrolled Recursion'
    description: |-
        Uncontrolled recursion in Decoder.Decode in encoding/gob before Go 1.17.12 and
        Go 1.18.4 allows an attacker to cause a panic due to stack exhaustion via a
        message which contains deeply nested structures.