Ankur Mhatre
4b6cefa60a
Companion repository for the ankurm.com article. Every transcript in docs/output/ was produced by running this project; scripts/run-all.sh regenerates all of them. Verified against Spring Boot 4.1.1 / Framework 7.0.9 / Security 7.1.1 / Micrometer 1.17.1 / kafka-clients 4.2.1 on Temurin JDK 25.0.4.1+1.
24 lines
1.2 KiB
Bash
Executable File
24 lines
1.2 KiB
Bash
Executable File
#!/usr/bin/env bash
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# The endpoint that really does hand over your secrets - once you turn it on.
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set -uo pipefail
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cd "$(dirname "$0")/.."
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OUT=docs/output/04-heapdump-leak.txt
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B=http://localhost:8080/actuator
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{
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echo "### profiles: exposeall,open PLUS --management.endpoint.heapdump.access=unrestricted"
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echo
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echo "\$ curl -s -o /tmp/heap.hprof -w 'status=%{http_code} bytes=%{size_download} type=%{content_type}' $B/heapdump"
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curl -s -o /tmp/heap.hprof -w 'status=%{http_code} bytes=%{size_download} type=%{content_type}\n' "$B/heapdump"
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echo
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echo "\$ strings /tmp/heap.hprof | grep -c 'S3CRET-partner-credential'"
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strings /tmp/heap.hprof 2>/dev/null | grep -c 'S3CRET-partner-credential'
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echo "\$ strings /tmp/heap.hprof | grep -o 'not-a-real-password[^\"]*' | head -1"
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strings /tmp/heap.hprof 2>/dev/null | grep -o 'not-a-real-password[^\"]*' | head -1
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echo
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echo " /actuator/env masked both of these to ******."
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echo " /actuator/heapdump handed over the process memory that contains them in plaintext."
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echo " Sanitisation is a property-rendering feature. It is not a security boundary."
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rm -f /tmp/heap.hprof
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} > "$OUT" 2>&1
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echo "wrote $OUT"
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