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security: fix faucet rate limiting, backup key permissions, and ECDSA signature exposure #115

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security: fix faucet rate limiting, backup key permissions, and ECDSA signature exposure #115

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Initial plan
Copilot Mar 4, 2026
b61161f
fix: address faucet rate limiting, backup permissions, and ECDSA expo…
Copilot Mar 4, 2026
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14 changes: 1 addition & 13 deletions README.md
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Original file line number Diff line number Diff line change
Expand Up @@ -628,24 +628,12 @@ BigNumber { value: "0" }
{
hash: '0xd117e990e85c2428a620f9bd834b0597db1648f3d2fa5899d929fd1701d46e01',
type: 0,
accessList: null,
blockHash: '0xf6063f0c5e86ab4efaf970e901ca3f5be3335ec61ab8f50fc075a6915f5e19e5',
blockNumber: 5,
transactionIndex: 0,
confirmations: 1,
from: '0x8Cba0477d89394E6d8aD658E11d52113A2DA4Ab2',
gasPrice: BigNumber { value: "100000000000" },
gasLimit: BigNumber { value: "41432" },
to: '0x0200000000000000000000000000000000000000',
value: BigNumber { value: "0" },
nonce: 2,
data: '0x0aaf704300000000000000000000000063b7076fc0a914af543c2e5c201df6c29fcc18c5',
r: '0x01e0c663a55757e12237f001811cab7a610c3ebfeba99ac9f0e29cbe4f4bd5ed',
s: '0x38b126e31bb8ee608e45554956c9a6eefb091961755283f9dff69964c2512f41',
v: 21049,
creates: null,
chainId: 10507,
wait: [Function (anonymous)]
...
}

> await contract.readAllowList(test.address)
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15 changes: 9 additions & 6 deletions chains/backup-validator.sh
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@@ -1,11 +1,14 @@
#!/bin/sh
#!/bin/bash
set -euo pipefail

# Backup Avalanche validator

TARGET_DIR=".avalanchego/staking/"
BACKUP_FILE_NAME="$(hostname).tar.gz"
TARGET_DIR="$HOME/.avalanchego/staking/"
BACKUP_FILE_NAME="$HOME/$(hostname)-staking-$(date +%Y%m%d-%H%M%S).tar.gz"

cd ~
tar czvf ${BACKUP_FILE_NAME} ${TARGET_DIR}
echo "Backup ${TARGET_DIR} to ${PWD}/${BACKUP_FILE_NAME}"
umask 077
tar czf "$BACKUP_FILE_NAME" -C "$HOME" ".avalanchego/staking/"
chmod 600 "$BACKUP_FILE_NAME"
echo "Backup created: $BACKUP_FILE_NAME (permissions: 600)"
# Consider encrypting with: gpg --symmetric --cipher-algo AES256 "$BACKUP_FILE_NAME"

5 changes: 5 additions & 0 deletions faucet/default
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Expand Up @@ -20,6 +20,8 @@ upstream faucet {
server localhost:8000;
}

limit_req_zone $binary_remote_addr zone=faucet_limit:10m rate=1r/m;

# Default server configuration
#
server {
Expand Down Expand Up @@ -125,6 +127,9 @@ server {
}

location /api/ {
limit_req zone=faucet_limit burst=2 nodelay;
limit_req_status 429;
client_max_body_size 1k;
proxy_pass http://faucet;
}

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